CURRICULUM VITAE
Jaime
Ramírez-Angulo
Updated: December 8, 2008
Jaime
Ramírez-Angulo is currently Klipsch Distinguished Professor, IEEE Fellow,
and Director of the Mixed-Signal VLSI lab at the Klipsch School of Electrical and Computer
Engineering, New Mexico State University
( Las Cruces, New Mexico), USA. He received a degree in Communications and Electronic Engineering
(Professional degree), a M.S.E.E. from the National Polytechnic Institute in
Mexico City and a Dr.-Ing degree form the University of Stuttgart in Stuttgart,
Germany in 1974, 1976 and 1982 respectively. He was professor at the National
Institute for Astrophysics Optics and Electronics (INAOE) and at Texas A&M
University. His research is related to various aspects of design and test of
analog and mixed-signal Very Large Scale Integrated Circuits. He has made
numerous contributions to this field which have been reported in over four
hundred twenty publications in the most
prestigious journals and conferences in analog circuit design. He has two high
technology patents and has held numerous invited and keynote presentations. He
has been a consultant to Texas Instruments, NASA-ACE, NASA-Ames, NASA Goddard and Oak Ridge National Laboratories. His
research has been supported by National Science Foundation, Sandia National
Labs, Engineering Foundation, Texas Instruments and Agilent. He received the
prestigious URC University Research Council for exceptional achievements in
creative scholarly activities and the Westhafer award for Excellence in
Research and Creativity in March and May
2002 respectively. The Westhafer award is
the highest faculty award for research merits at New Mexico State University. On October 2002
he was named Paul W. Klipsch
Distinguished Professor and was IEEE distinguished lecturer for the period
2003-2005. Two of his papers were listed
in 2005 among the 100 most downloaded papers of all IEEE societies. In May 2004
one of his students earned the award as most outstanding Ph.D student and in 2006 and 2007 two of his students earned
the award as most outstanding M.Sc. students at New Mexico State University
1. PERSONAL DATA AND HOW TO CONTACT ME
2. DEGREES
3. RESEARCH
6. PUBLICATIONS
7. FUNDING
10. MOST IMPORTANT RESEARCH CONTRIBUTIONS
12. PATENTS
1. PERSONAL DATA AND HOW TO CONTACT ME
Professor of Electrical and Computer Engineering Field of specialty: VLSI/Microelectronics
Director of VLSI laboratory at New Mexico State University
Address: New Mexico State University
Klipsch School of Electrical and Computer Engineering, Las Cruces, New Mexico 88003-0001
Tel. (505) 646‑4406, FAX (505) 646-1435, email: jramirez@nmsu.edu http://www.ece.nmsu.edu/people/ramirez-angulo.html
Home address: 7309 Desierto Pais
El Paso, TX 79912
Tel: (915) 585-0279
Date of Birth: February 18, 1952
2. DEGREES
- Ph.D. in Electrical Engineering University of Stuttgart, Stuttgart, Germany, 1982.
Thesis Design of Electronic Circuits: Low Computational Cost Algorithms for Production Yield Improvement (Field: Computer Aided. Design of Electronic Circuits) Ph.D. at University of Stuttgart from 1977-1982
- MSEE. CINVESTAV-IPN (Center for Advanced Studies and Research, National Polytechnic Institute), Mexico City. 1976.
Thesis: Design of Acoustic Surface Wave Filters (Masters Degree at CINVESTAV-IPN from 1974-1976)
- Communications and Electronics Engineer. (Professional Degree) National Polytechnic Institute of México (IPN), México City. 1974. (B.Sc. at IPN from 1969-1973)
3. RESEARCH
Microelectronics, Analog and Digital VLSI Circuit Design, Integrated Continuous-time and Switched-Capacitor Filters, Current-mode techniques for Analog Signal Processing, Neural and Fuzzy Networks, Device Modeling, Fault detection in analog and digital VLSI systems. BiCMOS circuit design, low-voltage low-power design techniques, RF microelectronic circuit design. High speed/High Slew rate Operational Amplifiers
4. PROFESSIONAL EXPERIENCE
1982-1984 Researcher and Instructor at INAOE (Instituto Nacional de Astrofisica, Optica y Electronica), Tonantzintla, Puebla, Mexico. Field of work: Microelectronic Circuit Design
1985-1989 Assistant Professor at Texas A&M University, College Station, Texas. Field of work: Microelectronic Circuit Design
1990-Present Associate Professor, Full Professor (since August 95), New Mexico State University. Field of work: Mixed-Signal and Analog Microelectronic Circuit Design
5b. Courses Taught
Electronic Devices and Circuits, Design of Circuits with Operational Amplifiers, Active Filters, Analog Microelectronics, Computer Aided Circuit Design, Digital VLSI System Design, Fuzzy Processors, CMOS RF Microelectronics, A/D and D/A conversion techniques.
5. HONORS AND AWARDS
- IEEE Fellow for Contributions to Design Methodologies for Analog Signal Processing Integrated Circuits, January 1, 2000
- New Mexico State University Award for Exceptional Achievements in Creative Scholarly Activity, March 19 2002
- New Mexico State University Westhafer Award for Excellence in Research creative Activity, April 19, 2002 (Highest research award at New Mexico State University)
- Paul and Valerie Klipsch Distinguished Professorship, October 11, 2002
- IEEE distinguished lecturer for the period 2004-2005
- Invited on a regular basis (two to three times a year) to give plenary presentations at professional conferences and workshops.
- Over 420 publications in some of the most prestigious professional journals and conferences in analog and mixed-signal VLSI design
- Two papers classified within the most cited papers in IEEE Circuits and Systems Society
6. PUBLICATIONS
6a. Journal papers
1. "Fabrication of Thin Fim Hybrid microcircuits", J. Ramírez‑Angulo A. Ortiz‑Gonzalez and J. Fragoso‑Lopez, Physics and Technology of Semiconductors (in spanish), vol.1, No. 3, pp. 270‑280, March 1983.
2. "AROMA: An Area Optimized CAD Program for Cascade SC Filter Design", E. Sánchez‑Sinencio and J. Ramírez‑Angulo, IEEE Trans. on Computer Aided Design, vol. CAD‑4, No.3, pp. 296‑302, July 1985.
3.
"Component Quantization Effects on
Continuous Time Filters", J. Ramírez‑Angulo, R. L. Geiger and E.
Sánchez‑Sinencio, IEEE Transactions
on Circuits and Systems, vol. CAS‑33,
No. 6, pp. 651‑659, June 1986.
4. "Characterization, Evaluation and Comparison of Laser-Trimmed Film Resistors," J. Ramírez-Angulo, R. L. Geiger and E. Sánchez-Sinencio, IEEE Journal of Solid State Circuits, vol. SC-22, No. 6, pp. 1177-1189, December 1987.
5. "New Laser-Trimmed Film Resistor Structures for Very High Stability Requirements," J. Ramírez-Angulo and R. L. Geiger, IEEE Transactions on Electron Devices, vol. ED-35, No. 4, pp. 516-518, April 1988.
6. "Design of Active Filters for Large Variations in the Gain-Bandwidth Product," J. Ramírez-Angulo, Proceedings of the IEEE, vol. 76, No. 10, pp. 1368-1370, October 1988.
7. "FIESTA: A Filter Educational Synthesis Teaching-Aid," M. Kobe, J. Ramírez-Angulo, E. Sánchez-Sinencio, IEEE Transactions on Education, vol. 32, No. 3. pp. 280-286, August 1989.
8. "OTA-Based Nonlinear Function Approximation," E. Sánchez-Sinencio, J. Ramírez-Angulo and B. Linares Barranco, IEEE Journal of Solid Sate Circuits, vol. 24, No. 6, pp. 1576-1586, December 1989.
9. "Active Compensation of Operational Transconductance Amplifier Filters Using Partial Positive Feedback," J. Ramírez-Angulo and E. Sánchez-Sinencio, IEEE Journal of Solid State Circuits, vol. SC-25, No. 4, pp. 1024-1028, August 1990.
10. ”Extended Transconductance Adjustment/linearisation Technique", W. J. Adams and J. Ramírez-Angulo, Electronics Letters, vol. 27, No. 10, pp. 842-844, May 1991.
11. "Applications of Composite BICMOS Transistors," J. Ramírez-Angulo, M. Deyong and W.J. Adams, Electronics Letters, Vol. 27, No. 24, pp. 2236-2238, Nov. 1991.
12. "A High Frequency Low Voltage CMOS diode", J. Ramírez-Angulo, Electronics Letters, Vol. 28, No. 3, pp. 299-301, January 1992.
13. "Current Mode Continuous-Time Filters: Two Design Approaches", J. Ramírez-Angulo, E. Sánchez-Sinencio and M. Robinson, IEEE Transactions on Circuits and Systems, vol. 39, No. 6, June 1992, pp. 337-341.
14. "Programmable BiCMOS Transconductor for C-TA filters", J. Ramírez-Angulo and E. Sánchez-Sinencio, Electronics Letters, vol. 28, No. 13, June 4th 1992, pp. 1185-1187.
15. " A low-voltage vertical BiCMOS OTA", J. Ramírez-Angulo, IEE proceedings Part G, Vol. 139, No. 4, August 1992, pp. 553-556
16. "Highly Linear Four Quadrant BiCMOS Analogue Multiplier", Jaime Ramírez-Angulo, Electronics Letters, vol. 28, No. 19, September 10th 1992, pp. 1783-178.
17. "A BICMOS Current Buffer Rectifier," J. Ramírez-Angulo, IEEE Transactions on Circuits and Systems, vol. 39, No. 10, Oct. 92, pp. 849-851.
18. "A Compact Current controlled CMOS Waveform Generator," J. Ramírez-Angulo, IEEE Transactions on Circuits and Systems, vol. 39, No. 12 December 1992, pp. 883-885.
19. "Digitally Tunable MOS Current Mirrors for High Precision Applications", J. Ramírez-Angulo, IEE Proceedings Part G, vol. 140, No. 2, April 1993.
20.
"OTA-C Biquad
Filter Silicon Compiler", M.R.Kobe, E. Sánchez-Sinencio and J.
Ramírez-Angulo, Analog Integrated
Circuits and Signal Processing, pp. 83-98, vol. 3, No. 3, May 1993.
21.
"A Current mode
Cellular Neural Network Implementation," J. Varrientos, E.
Sánchez-Sinencio and J. Ramírez-Angulo, IEEE
Transactions on Circuits and Systems, vol. 40, No 3, pp. 147-155, March
1993
22.
“BiCMOS Low Distortion
Tunable Transconductor for Continuous-Time Filters", M. Ali, M. Howe, E.
Sánchez-Sinencio and J. Ramírez-Angulo, IEEE
Transactions on Circuits and Systems, vol. 40, No.1, pp. 43-48, January
1993
23.
"iDD pulse
response testing: A unified approach to testing analog and digital VLSI circuits," J. Beasley, H.
Ramamurthy, M. DeYong and J. Ramírez-Angulo, IEE Electronics Letters, vol. 29, No. 24, pp. 2101-2013, November
1993.
24.
“Low-Voltage Building
Blocks for Fuzzy Processors, J. Ramírez-Angulo, IEEE Circuits and Devices
Magazine, vol. 10, No. 4, July 1994, pp. 48-50
25.
"Large f0Q Second
Order Filters Using Multiple Output OTAs", Jaime Ramírez-Angulo and E.
Sánchez-Sinencio, IEEE Transactions on Circuits and Systems, Vol. 41, No. 9, pp.
587-592, September 1994
26.
"High frequency
compensated current-mode ladder filters using multiple output OTAs," Jaime
Ramírez-Angulo and E. Sánchez-Sinencio,
IEEE Transactions on Circuits and
Systems, Vol. 41, No. 9, pp. 581-586, Sept. 1994
27.
“Wide Range Gain
Programmable class AB linear Current Mirrors for low supply operation,” , J.
Ramirez-Angulo, IEEE Transactions on Circuits and Systems, Vol. 41, No. 9, pp.
631-634, September 1994
28.
"Low-Voltage OTA
architectures Using Multiple Input Floating gate Transistors," J.
Ramírez-Angulo, S.C. Choi, G. Gonzalez-Altamirano, IEEE Transactions on Circuits and Systems, vol. 42, No. 12,
pp.971-974, November 1995.
29.
"OTA:GS filters:
the new face of RC-active filters", J. Ramírez-Angulo and G. Gonzalez Revista Mexicana de Fisica, vol. 42, No.
3 pp. 459-466, July 1996.
30.
"Charge Mode
Defuzzifiers using multiple input floating-gate transistors," J,
Ramírez-Angulo, V. Quintana, S.C. Choi, D. Zrilic and A. de Luca International Journal of Intelligent
Automation and Soft Control, Special Issue on Autonomous Control
Engineering, vol. 3, No. 1, pp. 5-12, February 1997
31.
"Low-Voltage
High-Frequency Continuous-time Filters Based on Simple Transconductors and
Miller Integrators", J. Ramírez-Angulo, Journal of Analog Integrated Circuits and Signal Processing, pp.
295-301, May 1997.
32.
"A simple
technique for low-voltage op-amp operation in continuous-time," J.
Ramírez-Angulo, A Torralba, R.G. Carvajal and
J.Tombs, IEE Electronics Letters,
vol. 35, No. 4, February 18th, 1999, pp. 263-264
33.
” A CMOS four quadrant
Current/Transconductance multiplier,” A. Diaz-Sánchez, J. Ramírez-Angulo, E.
Sánchez-Sinencio and Gubhee Han, Journal of Analog Integrated Circuits and
Signal Processing, vol. 19, No. 2, May 1999, pp. 163-168.
34.
"Very Low-Voltage
Class AB CMOS and Bipolar Precision Current rectifiers," J.
Ramírez-Angulo, R.G. Carvajal, J. Tombs and A. Torralba, IEE Electronics Letters, Vol. 35. No. 22, October 1999, pp.
1904-1905.
35.
"Hardware
Implementations of Fuzzy Membership fucntions, Operations and Inference,” Djuro
G. Zrilic, Jaime Ramírez-Angulo and B.Yuan Computers
and Electrical Engineering, Vol. 26, No. 1, January 2000, pp. 85-105
36.
Low-voltage CMOS
amplifiers with wide input-output swing based on a novel scheme," J.
Ramírez-Angulo, A Torralba, R.G. Carvajal and J.Tombs, IEEE Transactions on Circuits
and Systems-I, vol. 47, No. 5, May 2000, pp. 772-774.
37.
High-speed
high-precision min/max circuits in CMOS technology Carvajal, RG;
Ramirez-Angulo, J; Martinez-Heredia, : Electronics Letters; April 13
2000; v.36, no.8, p.697-699
38.
"Class AB output
stage for low voltage CMOS op-amps with accurate quiescent current
control," A. Torralba, R.G. Carvajal, J. Martinez-Heredia and J.
Ramirez-Angulo, Electronics Letters, vol. 36, No. 21, 12th
October 2000, pp. 1753-1754.
39.
"Floating-Gate
based tunable CMOS low-voltage linear transconductor and its application to HF
Gm-C filter design," F. Munoz, A. Torralba, R. G. Carvajal, J. Tombs, and
J. Ramirez Angulo, IEEE Transactions on Circuits and Systems, special issue
on applications of floating gate transistors, vol. 48, No. 1, January 2001,
pp. 106-110
40.
"Low-voltage CMOS
Op-amp with rail-to-rail signal swing for continuous-time signal processing
using multiple-input floating-gate transistors," J. Ramirez-Angulo, R. G.
Carvajal, J. Tombs, and A. Torralba, IEEE Transactions on Circuits and
Systems, special issue on applications of floating gate transistors, vol. 48,
No. 1, Jan. 2001, pp. 110-116
41.
“MITE Circuits: The
Continuous time counterpart to switched capacitor circuits," Jaime Ramirez-Angulo and Antonio Lopez, IEEE Transactions on
Circuits and Systems, special issue on applications of floating gate transistors,
vol. 48, No. 1, January 2001, pp. 45-55
42.
“Compact low-power high slew sate CMOS buffer for large capacitive
loads,” A.Torralba, R.G.Carvajal, J. Galán, and J.Ramírez-Angulo, Electronics
Letters vol. 38. No. 22, Oct. 24, 2002, pp. 1348-1349.
43.
“Low-power Low-voltage differential class-AB OTA for SC circuits,” G.Carvajal, J. Galán, J.Ramírez-Angulo and A.Torralba, Electronics Letters,
vol. 38, No. 22 pp. 1304-1305,
Oct. 24, 2002.
44.
“Simple technique using Local CMFB to enhance Slew Rate and bandwidth of one-Stage
CMOS op-amps,” Jaime Ramirez-Angulo and Michael Holmes. Electronics Letters,
vol. 38, No 23, pp. 1409-1411, November 7th 2002,
45.
“Output stage for low
supply voltage, high-performance CMOS mirrors,” A.Torrallba, Carvajal, F. Muñoz
and J.Ramírez-Angulo, Electronics
Letters vol. 38, No. 24, pp.
1528-1529, Nov. 21, 2002
46.
“Low Voltage
Transconductor with High Linearity and large Bandwidth,” A.Torrallba, J.M.
Martinez-Heredia, R.G. Carvajal, and
J.Ramírez-Angulo,, Electronics Letters
vol. 38, No. 25, pp. 1616-1617 December 5 2002
47.
“Innovative Built-In
Self-Test Schemes for On-Chip Diagnosis, Compliant with the IEEE 1149.4
Mixed-Signal Test Bus Standard,” Gladys
Omayra Ducoudray Acevedo and Jaime Ramírez-Angulo, Journal of Electronic Testing and Applications, vol. 19, issue 1,
February 2003, pp. 21-28
48.
“An Analog Median Filter with Fuzzy Adaptation, “ J. Lemuz-Lopez,
A, Diaz-Sanchez and J. Ramirez-Angulo, Microelectronics
Reliablity; Feb. 2003; v.43, no.2, p.203-207
49.
“A New Analogue Switch for Very Low Voltage Applications, “ F. Muñoz, J. Ramírez-AnguloLopez-Martin R.G. Carvajal A.
Torralba1 B. Palomo and M. Kachare, IEE Electronics Letters, May 2003; v.39, no.9, p.701-702.
50.
“A new Family of Very
Low-Voltage Analog Circuits Based on Quasi Floating Gate Transistors, J.
Ramirez-Angulo, C. Urquidi, R.G. Carvajal, A. Lopez-Martin, IEEE Transactions on Circuits and Systems,
II v. 50, No. 5 May 2003, pp.
214-220
51.
“Low-voltage high-gain
differential OTA for SC circuits,” Carvajal, RG; Palomo, B; Torralba, A; Munoz,
F; Ramirez-Angulo, Electronics Letters; Aug 7 2003; v.39, no.16, p.1159-1160
52.
“Class AB output stages for low voltage CMOS op-amps with accurate
quiescent current control by means of dynamic biasing,” A. Torralba, R.G. Carvajal, J.
Ramirez-Angulo, J. Tombs, F. Munoz, J.A. Galan , Journal of Analog Integrated Circuits and Signal Processing,
Special Issue on ICECS 2001, Jul-Aug. 2003,
Vol. 36, No. 1-2pp. 69-77.
53.
“Analog Adaptive Median Filters” Alejandro Díaz-Sánchez , Jaime Ramírez-Angulo and Javier
Lemus-Lopez, Journal of Analog Integrated Circuits and Signal Processing
v. 36, No. 3 Sept. 2003, pp. 207-213
54.
“Low voltage class AB output
stage for CMOS op-amps using multiple input floating gate Transistors, “ Carvajal,
RG; Torralba, A; Tombs, J; Munoz, F; Ramirez-Angulo, J : Analog Integrated
Circuits and Signal Processing; Sept. 2003; v.36, no.3, p.245-249.
55.
“Very Low Voltage
Rail-to-Rail Programmable-Gain CMOS Amplifier”Jaime Ramírez-Angulo , Antonio J.
López-Martín , Ramón G. Carvajal , and Chad Lackey, Journal of
Analog Integrated Circuits and Signal Processing Dec 2003; v.37, no.3, p.269-273
56.
”Low-voltage analog circuits based on wideband capacitive
coupling, “,J. Ramirez-Angulo, J; C. Urquidi,
R.G. Carvajal, A. Torralba, ; A.J. Lopez-Martin, Journal of Analog
Integrated Circuits and Signal Processing,
Dec 2003; v.37, no.3, p.253-257
57.
“Low-power low-voltage class-AB linear OTA for HF filters with a
large tuning range J.A. Galan, R.G.
Carvajal, F. Munoz, A. Torralba, J.
Ramirez-Angulo, Journal of Analog
Integrated Circuits and Signal Processing; Dec 2003; v.37, no.3, p.275-280
58.
“Low voltage CMOS
analogue four quadrant multiplier based on flipped voltage followers,” J.
Ramirez-Angulo, S. Thoutam, R.G. Carvajal and A. Lopez. Martin IEE
Electronics Letters. Vol 39, No. 25, pp. 1771-1772, December 2003.
59.
“Low-voltage
Power-efficient Adaptive Biasing for CMOS Amplifiers and Buffers,” S. Baswa,
A.J. Lopez-Martin, R.G. Carvajal,
J. Ramirez-Angulo, Electronics
Letters; Feb. 19 2004; v.40, no.4, p.217-219.
60.
“Low-voltage
Micropower Super Class AB CMOS OTA “ S. Baswa,
A.J. Lopez-Martin, J. Ramirez-Angulo,
R.G. Carvajal, Electronic Letters; Feb 19 2004; v.40, no.4,
p.216-217.
61.
“Low supply voltage
high-performance CMOS current mirror with low input and output voltage
requirements,” Ramirez-Angulo, J; Carvajal, RG; Torralba, A, IEEE Transactions on Circuits and Systems
II-Express Briefs; March 2004; v.51, no.3, p.124-129
62.
“A Fully Parallel CMOS
Analog Median Filter,” A. Diaz-Sanchez, J. Ramirez-Angulo, A. Lopez-Martin, E. Sanchez-Sinencio, IEEE Transactions on Circuits and Systems
II-Express Briefs; March 2004; v.51, no.3, p.116-123
63.
“Very Low-voltage
Analog Signal Processing Based on Quasi-floating Gate Transistors,” ,J.
Ramirez-Angulo, A.J. Lopez-Martin; R. G.
Carvajal, F.M. Chavero, IEEE Journal of Solid State Circuits; March
2004; v.39, no.3, p.434-442.
64.
“1.1V Low-Power Delta Sigma Modulator fro
14-bit, 16KHz A/D Conversion Using a New Low-Voltage Class AB Op-Amp”, F.
Munoz, A.P. Vega Leal, R.G. Carvajal, A. Torralba, J. Tombs and J.
Ramirez-Angulo, Journal of Analog Integrated Circuits and Signal Processing,
May 27, 2004
65.
New compact CMOS
continuous-time low-voltage analog rank-order filter architecture , J.
Ramirez-Angulo, R. Gonzalez-Carvajal, G.O. Ducoudray, A.J. Lopez-Martin,
A. Torralba, IEEE
Transactions on Circuits and Systems II-Express Briefs; May 2004; v.51,
no.5, p.257-261
66.
Very low voltage MOS
translinear loops based on flipped voltage followers , Lopez-Martin, AJ;
Carlosena, A; Ramirez-Angulo, Journal of Analog Integrated Circuits and
Signal Processing; Jul. 2004; v.40, no.1, p.71-74
67.
“Biasing CMOS
amplifiers using MOS transistors in subthreshold region,” Manoj Bikumandla, Jaime
Ramírez-Angulo, Carlos Urquidi, Ramon G. Carvajal and Antonio J. Lopez-Martin,
IEICE Electronics Express Vol.1,
No.12, pp. 339-345, September 25, 2004
68.
Rail-to-rail super class AB CMOS operational amplifiers ,”, S. Baswa, J. Ramirez-Angulo, A. J.
López-Martín, R. G. Carvajal and M. Bikumandla Electronics Letters , January 6, 2005, vol. 41, No. 1
69.
” Reconfigurable Logic Family Based on Floating Gates,” L.F.
Cisneros_Sinencio, A. Diaz-Sanchez and J. Ramirez-Angulo, IEICE Transactions
Fundamentals Comunn. Electronics and Systems ; Nov 2004; v.E87C, no.11,
p.1884-1888
70.
“Rail-to-Rail super
Class AB CMOS Operational Amplifiers,” S. Baswa, J. Ramirez-Angulo, A.J.
Lopez-Martin, R.G. Carvajal and M. Bikumandla, Electronics Letters, vol. 41,
No. 1, January 6, 2005, pp. 1-2
71.
” Low-Voltage Wide gm Adjustment Range, Highly
Linear BiCMOS OTA,”, J. Ramírez-Angulo, Milind S. Sawant, A. J.
López-Martín, and R. G. Carvajal, ELEX: IEICE Electronics Express
Letters, Vo.l 2, No. 4 pp. 127-132, February 25, 2005
72.
”A Low-Power Low-Voltage OTA-C Sinuosidal Oscillator with a Large Tuning Range,” J.
Galan, R. G. Carvajal, A. Torralba, F. Muñoz, and J. Ramirez-Angulo, IEEE Transactions on
Circuits and Systems I, vol. 52, no. 2 Feb. 2005, pp. 283-291
73.
“Novel Architectures of Class AB Current
Mirrors with Programmable gain” C. Durbha, J. Ramirez-Angulo, R.G. Carvajal and
A. Lopez-Martin, Journal of Analog Integrated Circuits and Signal
Processing, Vol. 42, February 2005,
pp. 197-202
74.
“A Compact Tunable
Transconductor with high linearity,” M. Kachare, A.J. Lopez-Martin, J.
Ramirez-Angulo and R.G. Carvajal, IEEE Transactions on Circuits and Systems
II Express Briefs, vol. 52, No. 2 February 2005, pp. 82-84,
75.
“A
new, true low voltage, Class-AB current mirror', A. Torralba, R. G.Carvajal, M.Jiménez, F. Muñoz, J.
Ramírez-Angulo IEICE
Electronics Express ELEX , Vo. 2, No. 4, Feb. 25, 2005, pp. 103-107
76.
“Linearization of MOS resistors using
capacitive gate voltage averaging,” J. Ramirez-Angulo. M.
Sawant, R.G. Carvajal and A. López-Martín, IEE
Electronics Letters, vol. 41, No.
9, 28th April 2005, pp. 511-512
77.
“1.1 V Low-Power Sigma Delta Modulator for 14-bit, 16 kHz A/D
Conversion using a new low-voltage class-AB op-amp,” F. Munoz, A.P. Vega-Leal,
R.G. Carvajal, A. Torralba, J. Tombs and J. Ramirez-Angulo, Journal of
Analog Integrated Circuits and Signal Processing, vol. 43, No. 1 April
2005, April 2005, pp. 31-38.
78.
“Low-Voltage Super
Class AB CMOs OTA Cells with very high Slew Rate and Power Efficiency,”Antonio
J. López-Martín , Sushmita Baswa , Jaime Ramirez-Angulo, and Ramón G. Carvajal, IEEE Journal of Solid State Circuits, Vol. 40, No. 5, May 2005. pp.
1068-1077.
79.
“Hi-Speed High-precision Analog Rank
Order Filter with O(n) complexity in CMOS Technology,” R G. Carvajal, J.
Ramirez-Angulo, G.O.Ducoudray, and A. López-Martin IEEE Journal of Solid State Circuits, Vol. 40, No. 6, June 2005.
80.
“ A CMOS Transconductor with Multidecade
Tuning Using Balanced Current Scaling in
Moderate Inversion,” J. Ramirez-Angulo, C. Durbha, A. Lopez and R. G. Carvajal, IEEE Journal of Solid State Circuits ,Vol. 40, No.
5, May 2005, pp. 1078-1083
81.
“Low Voltage High Performance Voltage Mode and
Current mode WTA Circuits Based On
Flipped Voltage Follower,” J. Ramírez-Angulo, G. Ducoudray-Acevedo, R. G.
Carvajal and A. López-Martín, IEEE Transactions on Circuits and Systems
II, vol. 52, No. 7, July 2005, pp. 420-423.
82.
“The Flipped Voltage Follower: A useful cell for low-voltage
low-power circuit design, “.R.G. Carvajal, J.
Ramírez-Angulo, A. López-Martin, A. Torralba, J. Galán, A. Carlosena and
F.Muñoz, IEEE Transactions on
Circuits and Systems II vol. 52, No. 7, 2005, July 2005, pp. 1276-1291.
83.
“1.5-V Current-Mode CMOS True RMS-DC Converter
Based on Class-AB Transconductors ,” C. A. De La Cruz-Blas, A. López-Martín,
A.Carlosena, and J. Ramírez-Angulo, IEEE Transactions and Circuits and
Systems II vol. 52, No. 7, July 2005, pp. 376-379.
84.
“Compact Implementation of High Performance CMOS Current
mirror” J. Ramirez-Angulo,
M.S. Sawant, A. López-Martin
and R.G. Carvajal, Electronics Letters, vol.
41, No. 10, May 12, 2005, pp. 570-572.
85.
“New Low-Voltage Fully Programmable CMOS
Triangular/Trapezoidal Function Generator Circuit, “ M. Kachare, J.
Ramirez-Angulo, R.G. Cravajal and A. Lopez-Martin, IEEE Transactions on Circuits
and Systems I, vol. 52, No. 10, October 2005, pp. 1-11“
86.
“A proposal for high-performance CCII-based analogue CMOS design,”
Antonio J.
Lopez-Martin, Jaime Ramirez-Angulo; and
Ramon G. Carvajal, International
Journal of Circuit Theory and Applications, Int. J. Circ. Theor. Appl. 2005;
vol. 33:379–391.
87.
”Winner-Take-All Class AB
Input Stage,” S. Baswa, A. J. Lopez-Martin, J. Ramirez-Angulo and R.G.
Carvajal, Journal of Analog Integrated Circuits and Signal
Processing, vol. 46, pp. 149–152, January, 2006.
88.
“Low-voltage
High Performance Compact All Cascode CMOS Current mirror,” A. Garimella,
L. Garimella, J. Ramirez-Angulo, A. J. López-Martin and R.G. Carvajal, Electronics Letters pp. 8th December
2005, Volume 41, Issue 25 , p. 1359-1360
89.
“1.33mW, 2V CMOS
Continuous-time Bandpass Filter With Two decades of Center Frequency Tuning
Range,” J. Galan, Ramón G. Carvajal, A. Torralba, Fernando Muñoz, and J.
Ramirez-Angulo, IEE Proceedings Part G
v.152, no.5,
p.456-464
90.
“Micropower CMOS S&H circuit for Ambient Intelligence applications,” A. J. López-Martín, C.A. De La
Cruz, X. Ugalde, R. G. Carvajal and J. Ramirez-Angulo, Electronics Letters, Aug 18 2005; v.41, no.17,
p.935-936.
91.
Baswa S, Martin AJL, Ramirez-Angulo J,
“Winner-Take all class AB input stage
Journal of Analog Integrated Circuits and Signal Processing vol. 46, No. 2:
149-152 Feb 2006, pp. 149-152
92. “A Compact Low-Voltage Class AB Analogue Buffer,” Antonio Torralba, Ramón G. Carvajal, Mariano Jiménez, Fernando Muñoz, and Jaime Ramírez-Angulo, IEE Electronics Letters, vol. 42, No. 3, Feb. 3, 2006
93.
“Compact Power-Efficient Class AB CMOS
Exponential Voltage to Voltage Converter,”
De La Cruz-Blas, C. A., López-Martín, A. J., and Ramirez-Angulo, J., Electronics Letters, “IEE Electronics Letters,
vol. 42, No. 3, Feb. 3, 2006.
94.
Jaime Ramírez-Angulo, Annajirao Garimella, Lalitha
Mohana Kalyani Garimella, Antonio J. Lopez-Martin and Ramon G. Carvajal
“New Input Offset Compensation Scheme with Reduced Sensitivity to Charge
Injection and Leakage,” Electronics Letters, Volume 42, Issue
6, 16 March 2006 Page(s):340 - 341)
95.
“Highly
Linear Programmable Balanced Current Scaling Technique in Moderate Inversion,” A. J. López-Martin, J.
Ramírez-Angulo, C. Durbha, and R. G. Carvajal, IEEE Transactions on Circuits
and Systems II , Volume 53, Issue 4, April 2006
Page(s):283 - 285.
96.
“New Low-Voltage Class AB/AB CMOS Op-Amp with
Rail-to-Rail Input/Output Swing,
J. Ramírez-Angulo,
Milind S. Sawant, S. Thoutam A. J. López-Martín and R. G. Carvajal, IEEE Transactions on Circuits and Systems II,
Volume 53, Issue 4, April 2006 Page(s):289 - 293
97. “The Universal Op-Amp and Applications in Continuous-time Linear weighted Voltage addition,” J. Ramirez-Angulo and F, Ledesma, IEEE Transactions on Circuits and Systems II , Volume 53, Issue 5, May 2006 Page(s):283 - 285
98.
J. Ramírez-Angulo, A. J. Lopez-Martin, A. Garimella, L. Garimella, and
R. G. Carvajal , “New
Gain Programmable Current Mirrors Based on Current Steering,” Electronics
Letters, May 11 2006; v.42, no.10, p.559-560
99.
“Super
Class AB OTAs based on adaptive techniques at the input stage and the active
load,” J. Galan, Ramón G.
Carvajal , J. Ramírez-Angulo, Antonio J. López-Martín and C. Rubia-Marcos , Journal of Low Power Electronics,
vol. 2. pp. 1-6, 2006
100.
J. Ramírez-Angulo, A. J. Lopez-Martin, R. G. Carvajal, A. Torralba and
M. Jimenez, “Simple
Class AB voltage follower with slew rate and bandwidth enhancement and no extra
static power or supply requirements, “ Electronics Letters, vol. 42, No. 14 , pp.
784-785
101.
“Multiple
output linear V to I converters using split differential pairs and applications
in all-pass OTAs, J. Ramirez-Angulo, A. Lopez-Martin, R.G. Carvajal, S.R.S.
Garimella, L.K. Garimella and A. Garimella, Electronics Letters, vol.
42, No. 14, pp. 783-784.
102.
“Low-voltage Pseudo-differential
Transconductor with Improved Tunability-Linearity Trade-off,” B. Calvo,
S. Celma, J. Ramírez-Angulo and M.T. Sanz, Electronics Letters vol. 42,
No. 15, July 20, 2006, pp. 862-863.
103.
Jaime Ramirez-Angulo, Ramon
Carvajal, Antonio Lopez-Martin, and Juan
A. Galan, “A free but efficient class AB two-stage operational amplifier,” IEEE
Transactions on Circuits and Systems II, vol. 53-, No. 7, July 2006, pp. 568-571.
104.
J.
Ramirez-Angulo, C. Durbha, G.O. Ducoudray-Acevedo , RG. Carvajal and
Antonio J. Lopez-Martin, “Highly linear Wide Input Range CMOS OTA Architectures
Operating in Subthreshold and Strong Inversion,” special issue on "VLSI
Design and Test”, Microelectronic Engineering, vol. 84 (2007) 273–279 , Feb. 2007
105.
Super Class AB OTAs with Adaptive Biasing and Dynamic Output Current
Scaling
Galan J. A. ; Lopez-Martin A. J. ; Carvajal R. G. ; Ramirez-Angulo J. ;
Rubia-Marco C.
IEEE Transactions on Circuits and Systems I,
vol. 54 No.3.pp. 449-457 March
2007.
106. B. Calvo, J. Ramırez-Angulo and S.R.S. Garimella “Highly-accurate low-voltage source degenerated-based V–I converter using positive feedback,” Electronics Letters, vol. 43, No. 10, pp. 569-570, May 10, 2007
107.
A.
Lopez-Martin, J. Ramírez-Angulo, A. Lopez-Martin, and R. G. Carvajal,” 1.5-V
3-mW CMOS V-I converter with 75-dB SFDR for 6-Vpp input swings, Electronics Letters, vol. 43, No. 6.
pp. 336-338 March 15 2007
108. J. Ramírez-Angulo, A. J. Lopez-Martin, and R. G. Carvajal “Single transistor high impedance tail current source with extended common mode input range and reduced supply requirements,” IEEE Transactions on Circuits and Systems II, Vol. 54, No. 7, July 2007.pp. 581-585.
109. J. Ramírez-Angulo, J. Ezequiel Molinar-Solis, S. Gupta, R. G. Carvajal, and A. J. López-Martín “A New High Swing, High Speed CMOS WTA Using Differential Flipped Voltage Followers,” IEEE Transactions on Circuits and Systems II, Vol. 54, No.8, August 2007, 668-672.
110.
J. Ramirez-Angulo, A. Lopez-Martin and R.
Chintham and R.G. Carvajal, “A CMOS Analog Squarer circuit,” Electronics Letters, vol. 43, No. 20, pp.
1059-1060, Sept. 2007
111. A. Lopez-Martin,. R.G. Carvajal, B. Calvo, “Class-AB Fully Differential Voltage Followers,” J. Ramirez-Angulo, IEEE Transactions on Circuits and Systems II, vol. 55, No. 2, Feb 2008, pp. 131-135.
112. J. Ramirez-Angulo, M. Sawant, A. Lopez-Martin and R.G. Carvajal, “A power efficient and simple scheme for dynamically biasing cascode amplifiers and telescopic op-amps,” Integration, The VLSI Journal, Elsevier, available at www.elsevier.com/locate/vlsi , vol. 41, 2008, pp. 239-243
113. C. Lujan Martinez, R.G. Carvajal, J. Galan, A Torralab, J. Ramirez-Angulo and A. Lopez-Martin, “A Tunable Pseudo Differential OTA with -78dB THD consuming 1.25mW, IEEE Transactions on Circuits and Systems I. Volume 55, Issue 6, June 2008 Page(s):527 - 531
114. T. Sanchez-Rodriguez, C.I. Lujan Martinez, R.G. Carvajal, J. Ramirez-Angulo and A. Lopez-Martin , “A CMOS Linear Programmable Transconductor Suitable For Adjustable Gm-C Filters,” IEE Electronics letters, Volume 44, Issue 8, April 10 2008 pp. 505 - 506
115.
A.J. Lopez—Martin, J. Ramirez-Angulo, R.G.
Carvajal and L. Acosta, “CMOS Transconductors with Continuous Tuning Using
FGMOS Balanced Output Current Scaling,” IEEE
Journal of Solid State Circuits, Vol. 43, No. 5, May 2008, pp. 1313 – 1323.
116.
J. Ramirez-Angulo, C. Lujan-Martinez, C.
Rubia-Marcos, R. G. Carjaval, A. J.
Lopez-Martin, “Rail to Rail Fully
Differential Sample and Hold Based on Clocked Differential Difference Amplifier
Using Resistive Local Common Mode Feedback , “IET Electronics Letters, vol. 44, No. 11, May 27,
2008, pp. 656-658.
117.
A.J. Lopez-Martin, J.
Ramirez-Angulo, Carvajal, R.G.; J.M.
Algueta.,”Compact
class AB CMOS current mirror,” Electronics
Letters, Vol. 44, No. 23, November 6 2008 pp:1335 – 1336
118.
Lopez-Morillo, E.; Carvajal, R. G.; Munoz, F.; El Gmili, H.; Lopez-Martin, A.;
Ramirez-Angulo, J.; Rodriguez-Villegas, E “A 1.2-V 140-nW 10-bit
Sigma–Delta Modulator for Electroencephalogram Applications. “ IEEE Transactions
on Biomedical
Circuits and Systems, Vol. 2, No 3, Sept. 2008 Page(s):223 – 230
119.
Annajirao
Garimella, Lalitha M Kalyani-Garimella, Jaime Ramírez-Angulo, Ramon G.
Carvajal, Antonio J. Lopez-Martin, “Versatile Multidecade CMOS Voltage Controlled Oscillator with Accurate
Amplitude and PWM Control,” Springer, Analog Integrated Circuits and Signal
Processing, Special issue on IEEE NEWCAS/MWSCAS 2007 (in print, available
online since Aug 2008 at http://www.springerlink.com/content/j5402l8178623151/?p=67da99d29be448f5a2f703bc33c64817&pi=0
)
Accepted for publication
121.
M. Jiménez, L. Acosta, R. G. Carvajal, A.
Lopez-Martin and J. Ramírez-Angulo “-75
dB IM3 CMOS Gm-C VDSL Channel Filter” IEEE Transactions on Circuits and Systems
II accepted for publication with
revisions)
122. J. Ramirez-Angulo, S. Balasubramanian, B. Calvo , A. J. Lopez-Martin, and R. G. Carvajal, “ Highly linear MOS resistive degenerated V to I Converters with essentially reduced sensitivity to common mode signals ,” IEEE Transactions on Circuits and Systems II (under review)
123.
"A Master-Slave scheme to Tune Gain of
Transconductance Amplifiers with high Accuracy,” J. Ramirez-Angulo, IEEE Transactions
on Instrumentation and Measurement (under Review)
124. "Implementation of Trapezoidal Circuits with Fully independent Programmable Characteristics using Operational Transconductance Amplifiers,” J. Ramírez-Angulo, J. Zrilic and P. Saavedra, IEEE Transactions on Instrumentation and Measurement (under review)
125.
“ A Restrained Neighborhood Analog Median Filter For
Image Processing Applications, » Alejandro Díaz-Sánchez, Javier
Lemus-Lopez, Journal of Analog Integrated
Cirucits and Signal Processing (under review)
126.
Gabriel
Escarpita-Monarrez and Jaime Ramírez-Angulo, “Analog VLSI Fully
Programmable Analog VLSI Fully Programmable Piecewise Linear Approximation
System,” IEEE Transactions on Instrumentation and Measurement (under
review)
127. J. Ramirez-Angulo, Milind. S. Sawant, Antoio Lopez-Martin and R.G. Carvajal, “Extended Range Low Voltage Cascode Current Mirrors Based on Wideband Dynamic Biasing Techniques, “ IEEE Transactions on Circuits and Systems II, (resubmit with minor changes)
128.
Programmable linear resistors based on quasi-floating
gate MOSFETs, Electronics Letters (under review), Submitted December 11, 2006
129.
J.L. Ruiz-Chavira, J. Ramirez-Angulo, R.G.
Carvajal and A. Torralba, "Low-Voltage CMOS Single Ended and Fully
Differential Amplifier with Programmable Gain" IEEE Transactions on Circuits and Systems II
submitted February 12, 2007.
6b. Book chapters
1. "Frequency and Impedance Transformations", J. Ramírez-Angulo section 13.67, pp. 2192-2204 CRC Handbook on Circuits and Filters, 1995.
2. "Low Voltage Analog BiCMOS Circuit Building Blocks" IEEE Press book on Low Voltage Low Power Integrated Circuits and Systems. IEEE Press, New York, 1999, pp. 207-242.
3. Section: "Bandpass-Filter," Encyclopedia of Electrical and Electronics Engineering, John Wiley & Sons (1999).
4. Proceedings of the 42nd Midwest Symposium on Circuits and Systems
6c. Conference Papers
1. "Implementation of Surface Acoustic Wave Filters for Application in Specific Communication and Electronic Problems (in spanish)", J. Ramírez‑Angulo and A. Serrano. IEEE MEXICON 76. Mexico City, July 7‑10, pp. II35‑II41, 1976.
2. “Acoustic Surface Wave Filters (in spanish)", J. Ramírez‑Angulo and A.Serrano XVIII Congress of the Mexican Physics Society, Veracruz, Mexico December 8‑11, pp. 21, 1975.
3. "Design of a Traffic Measurement System for Automatic Networks (in spanish)", J. Ramírez‑Angulo and V. Aviles‑Garcia, Second Congress of the Mechanical and Electrical Engineers Society, Mexico City, November 11‑12, session D, 1976.
4. “Exploration of the Acceptability Region: A New Low Cost Design Centering Procedure", J. Ramírez‑Angulo, IEEE‑MEXICON 82, Mexico City, October 1982.
5. "Design of SAW Filters with Arbitrary Magnitude and Phase Response Specifications (in spanish)", J. Ramírez‑Angulo, XXV Congress of the Mexican Physics Society, Jalapa, Mexico, November 22‑26, pp. 13, 1982.
6. "Efficient Non‑Deterministic Design Centering Based on the Concept of Dominant Constraints", J. Ramírez‑Angulo and E. Luder, IEEE International Symposium on Circuits and Systems, Newport Beach, CA., May 2‑4, pp. 546‑549, 1983.
7. "Circuit Yield Improvement by One Dimensional Exploration of the Acceptability Region", J. Ramírez‑Angulo, 26th Midwest Symposium on Circuits and Systems, Puebla, Mexico, August 15‑16, pp. 477‑480, 1983.
8. "Fabrication in Mexico of thin Film Hybrid Microcircuits (in spanish)", J. Ramírez‑Angulo, A.Ortiz and J. Fragoso, IEEE‑MEXICON 83, Cuernavaca, Mexico, November 1982.
9. “Fabrication of Thin Film Resistors and Capacitors (in spanish)", J. Ramírez‑Angulo and A. Ortiz, XXVI Congress of the Mexican Physics Society, Puebla, Mexico, November 1983.
10. "Component Quantization Effects on Continuous Time Filters", J. Ramírez‑Angulo, R. L. Geiger and E. Sánchez‑Sinencio, IEEE International Symposium for Circuits and Systems, Kyoto, Japan, June 5‑7, pp. 1423‑1426, 1985.
11. "FIRE: A Computer Program to predict the Peformance of Laser Trimmed Film Resistors", J. Ramírez‑Angulo, R. L. Geiger and E. Sánchez‑Sinencio, 36th Electronics Components Conference, Seattle Washington, May 5‑7, pp. 405‑411, 1986.
12. "A Circuit Theoretical Approach to the Sensitivity Analysis of Laser Trimmed Film Resistors", J. Ramírez‑Angulo, R. L. Geiger and E. Sánchez‑Sinencio, 1986 IEEE Int. Symposium on Circuits and Systems, San Jose, CA, May 5‑7, pp.1201‑1206, 1986.
13. "A Computer‑Aided Design Program for Reduction of Total Capacitance in Cascade SC‑Filters", E. Sánchez‑Sinencio, J.Ramírez‑Angulo and R. L. Geiger, 29th Midwest Symposium on Circuits and Systems, Lincoln, NE, August 10‑12, pp. 597‑599, 1986.
14. "A Computer‑Aided Circuit Design Algorithm Based on a Random Direction and Radial Search", J. Ramírez Angulo and E. Sánchez‑Sinencio, 29th Midwest Symposium on Circuits and Systems, Lincoln, NE, August 10‑12, pp.897‑901, 1986.
15. "A Systematic Approach for the Characterization of RC‑distributed Elements", J. Ramírez‑Angulo, E. Sánchez‑Sinencio and R. L. Geiger, IEEE‑MEXICON 86, Guadalajara, Mexico, November 8‑10, pp. 1701‑1704, 1986.
16. "Design of Active Filters for Maximum GB‑variations", J. Ramírez‑Angulo, 30th Midwest symposium on Circuits and Systems, Syracuse, New York, August 17‑18, pp. 781‑784, 1987.
17. "Computer‑Aided Design and Evaluation of New Film Resistor Structures based on a Network Sensitivity Measure", J. Ramírez‑Angulo and R. L. Geiger, IEEE Israel Symposium on Circuits, Systems and Control, Herzliya, Israel, May 30‑June 1, pp. 6.31‑ 6.34, 1988.
18. "Bandpass OTA‑C Filter Structures, Tunability Considerations and Quantization Effects", J. Ramírez‑Angulo and E. Sánchez‑Sinencio, IEEE 2nd Israel Symposium on Circuits, Systems and Control, Herzliya, Israel, May 30‑June 1 pp. 7.21‑7.24, 1988.
19. "A Method to Relax the Design of Active Filters Against Large GB‑variations", J. Ramírez‑Angulo, 1988 IEEE International Symposium on Circuits and Systems, Espoo, Finland, pp. 2415‑2418, June 6‑9, 1988.
20. "Comparison of Biquadratic OTA‑C Filters from the Tuning Point of View", J. Ramírez Angulo and E. Sánchez‑Sinencio, 31th Midwest Symposium on Circuits and Systems, St. Louis, Mi, August 10‑12, pp. 510‑514, 1988.
21. "A Program for the Design of Filters with Specifications for Magnitude and Group‑Delay Response", M. Kobe, J. Ramírez‑Angulo and E. Sánchez‑Sinencio, 1988 IEEE‑Region 9 Conference, Mexico City, October 11‑14, 1988.
22. "OTA‑Based Nonlinear Function Approximation", E.Sánchez Sinencio, J. Ramírez‑Angulo and B. Linares‑Barranco, 1989 IEEE International Symposium on Circuits and Systems, Portland, Ore, pp. 2415‑2418, May 8‑11, pp. 96‑99.
23. "Active Compensation of Operational Transconductance Amplifier Filters Using Partial Positive Feedback", J. Ramírez‑Angulo, and E. Sánchez‑Sinencio, Midwest Symposium on Circuits and Systems, Champaign, Ill., pp. 1206‑1210, August 15‑16, 1989.
24. "Programmable Piecewise‑Linear Function Synthesizers Using Operational Transconductance Amplifiers", J. Ramírez‑Angulo, B. Linares‑Barranco, E. Sánchez‑Sinencio and A. Rodriguez‑Vazquez, 1989 European Conference on Circuit Theory and Design, Brighton, UK, pp. 452‑456, 5‑8 September 1989.
25. "All MOS‑Transistors Continuous‑Time Filters in CMOS‑Technology", B. Linares‑Barranco, E. Seaberg and J. Ramírez‑Angulo, IEEE‑Mexicon 89, Mexico, Sept. 17‑22 1989.
26. "Distributed RC‑Filters With Linearized MOS‑Transistors in MOS‑Technology'', B. Linares‑Barranco, E. Seaberg and J. Ramírez‑Angulo, IEEE‑1990 International Symposium on Circuits and Systems, New Orleans, Lousiana, pp. May 1‑3 1990, pp. 2385‑2388.
27. "A Precision Broadband Voltage Rectifier in CMOS Technology", J. Ramírez‑Angulo, IEEE‑1990 International Symposium on Circuits and Systems, New Orleans, Lousiana, May 1‑3 1990, pp. 1724‑1727.
28. "Maximum Value of the Base Resistance of Vertical Bipolar Transistors", B. Linares‑Barranco, E. Seaberg and J. Ramírez‑Angulo, IEEE‑1990 International Symposium on Circuits and Systems, New Orleans, Lousiana, May 1‑3 1990, pp. 3182‑3185.
29. “Analog Neural Networks for Real‑Time Constrained Optimization", A. Rodriguez‑Vazquez, R. Dominguez‑Castro, J.L.Huertas, E.Sánchez‑Sinencio, B.Linares‑Barranco and J. Ramírez‑Angulo, IEEE‑1990 International Symposium on Circuits and Systems, New Orleans, Lousiana, May 1‑3 1990, pp. 1867‑1870.
30. “FIESTAII: A PC‑ Filter Educational Synthesis Teaching Aid", J.Ramírez‑Angulo, M. Kobe and E.Sánchez‑Sinencio, 33rd‑ Midwest Symposium on Circuits and Systems, Calgary, Canada, August 12‑14 1990, pp. 504-507.
31. “A Current Mode CMOS‑Cellular Neural Network", J. Varrientos, J. Ramírez‑Angulo and E. Sánchez‑Sinencio, 33rd‑ Midwest Symposium on Circuits and Systems, Calgary, Canada, August 12‑14 1990, pp. 277-280.
32. “A Program for the Design of Continuous Time Filters", J. Ramírez-Angulo, M.R. Kobe, E. Sánchez-Sinencio, 1990 IEEE Region 9 Conference, Monterrey Mexico, Oct 1-4, 1990, vol. I, pp. 1-4.
33. “Cellular Neural Networks Implementation: A Current Mode Approach", J.E.Varrientos, J.Ramírez-Angulo and E.Sánchez-Sinencio, Proceedings of IEEE International Workshop on Cellular Neural Networks and their Applications, Budapest Hungary December 16-19, 1990, pp. 216-220.
34. “Current Mode Continuous-Time Filters: Two Design Approaches", M. E. Robinson, J. Ramírez-Angulo and E. Sánchez-Sinencio, 34th Midwest Symposium on Circuits and Systems, Monterey, California, May 14-17, 1991.
35. “OTA Extended Adjustment Range and Linearization Via Programmable Current Mirrors", W. J. Adams and J. Ramírez-Angulo, 34th Midwest Symposium on Circuits and Systems, Monterey, California, May 14-17, 1991.
36. “High Selectivity, High Frequency Continuous-Time Filters Using Multiple Output OTAs", Jaime Ramírez-Angulo, E. Sánchez-Sinencio and Matthew Howe, 1991 IEEE International Symposium on Circuits and Systems, pp. 1351-1354 Singapore, June 11-14, 1991.
37. “Improvement of Laser Trimmed Film Resistor Stability by Selection of Optimal Trim Paths", J. Ramírez-Angulo, R. Wang and Randall L. Geiger, 1991 IEEE International Symposium on Circuits and Systems, pp. 2188-2191, Singapore, June 11-14 1991.
38. “OTA Extended gm Adjustment Range Via Electronically Programmable Current Mirrors", W. J. Adams and J. Ramírez-Angulo, 1991 IEEE International Symposium on Circuits and Systems, pp. 2553-2556, Singapore, June 11-14 1991.
39. “Circuit implementations of Extended Transconductance Linearization Technique", W.J. Adams and J. Ramírez-Angulo, 1991 European Conference on Circuit Theory and Design, September 2-6, 1991, Copenhagen, Denmark.
40. “Wide gm Adjustment Range, Highly Linear OTA with Linear Programmable Current Mirrors," J. Ramírez-Angulo and I. Grau, Proceedings of 1992 IEEE International Conference on Circuits and Systems, pp. 1372-1375, San Diego CA, May 10-13 1992.
41. "Applications of Composite BICMOS Transistors in Analog Circuits," J. Ramírez-Angulo, M. Deyong and W. J. Adams, Proceedings of 1992 IEEE International Conference on Circuits and Systems, pp. 1262-1266, San Diego CA, May 10-13 1992.
42. “Architectures for Analog VLSI implementation of Neural Networks for Solving Linear Equations with Inequality Constraints," A. Cichocki, J. Ramírez-Angulo and R. Unbehauen, Proceedings of 1992 IEEE International Conference on Circuits and Systems, pp. 1529-1532, San Diego CA, May 10-13 1992.
43. "A Piecewise Linear Function Approximation using Current Mode Circuits," J. Ramírez-Angulo, E. Sánchez-Sinencio and A. Rodriguez-Vazquez, Proceedings of 1992 IEEE International Conference on Circuits and Systems, pp. 2021-2024, San Diego CA, May 10-13 1992.
44. "The folded Gibert Cell: A low-voltage, high performance CMOS multiplier", J. Ramírez-Angulo and Sun Ming-Chen, Proceedings of 35th Midwest Symposium on Circuits and Systems, pp. 20-23, August 9-12, 1992 Washington, D.C.
45. "Modules for a digitally controlled analog signal processor with highly reconfigurable architecture", J. Ramírez-Angulo, R. Paz and R. Parra, Proceedings of 35th Midwest Symposium on Circuits and Systems, pp. 458-461, August 9-12, 1992 Washington, D.C.
46. "A hybrid OTA with very wide adjustement range", M. DeYong and J. Ramírez-Angulo, Proceedings of 35th Midwest Symposium on Circuits and Systems,pp. 953-956, August 9-12, 1992 Washington, D.C.
47. "CMOS cells for analog VLSI Laplace equation solver based on the resistive analogy method", J. Ramírez-Angulo, M. DeYong and Sun Ming-Chen, Proceedings of 35th Midwest Symposium on Circuits and Systems, pp. 597-600, August 9-12, 1992 Washington, D.C.
48. "A BiCMOS Low Distortion Tunable Transconductor for Continuous-Time Filters", M. Ali, M. Howe, E. Sánchez-Sinecio and J. Ramírez-Angulo Proceedings of 35th Midwest Symposium on Circuits and Systems, pp. 571-574, August 9-12, 1992 Washington, D.C.
49. "A BiCMOS current buffer-rectifier", M. Ali, M. Howe, E. Sánchez-Sinencio and J. Ramírez-Angulo Proceedings of 35th Midwest Symposium on Circuits and Systems, August 9-12, 1992 Washington, D.C.
50. "A second generation Linear low-voltage BiCMOS OTA," J. Ramírez-Angulo and K. H. Treece, Proceedings of the 1993 IEEE International Conference on Circuits and Systems, pp. 1172-1175, May 5-7 1993, Chicago Il.
51. "High frequency compensated Current-mode ladder filters using multiple output OTAs," J. Ramírez-Angulo and E. Sánchez-Sinencio, Proceedings of the 1993 IEEE International Conference on Circuits and Systems, pp. 1412-1415, May 5-7 1993, Chicago Il.
52. "Low voltage programmable analog FIR Filters using voltage followers and multipliers," J. Ramírez-Angulo and A. Diaz-Sánchez, Proceedings of the 1993 IEEE International Conference on Circuits and Systems, pp. 1408-1411, May 5-7 1993, Chicago Il.
53. "Linearity accuracy and bandwidth Considerations in wideband CMOS voltage amplifiers," J. Ramírez-Angulo, R. Sadkowski and E. Sánchez-Sinencio, Proceedings of the 1993 IEEE International Conference on Circuits and Systems, pp. 1251-1254, May 5-7 1993, Chicago, Il.
54. "Novel Digitally trimmable MOS current mirrors," J. Ramírez-Angulo, Proceedings of the 1993 IEEE International Conference on Circuits and Systems, pp. 974-977, May 5-7 1993, Chicago Il.
55. "A master-slave scheme for tuning the gain of transconductance amplifiers with high absolute accuracy," J. Ramírez-Angulo, Proceedings of the 1993 IEEE International Conference on Circuits and Systems, pp. 1176-1179, Chicago, Il, May 5-7 1993.
56. "Highly Linear Four Quadrant analogue BiCMOS multiplier for +-1.5V", J. Ramírez-Angulo, Proceedings of IEEE 1993 International Symposium on Circuits and Systems, pp. 1467-1470, Chicago, Il, May 5-7 1993.
57. "IDD spectrum and temporal analysis test techniques for VLSI circuits," J. Beasley, H. Ramamurthi, M. DeYong and J. Ramírez-Angulo, Proceedings of the 1993 European Conference on Circuit Theory and Design, pp. 659-664, Davos, Switzerland, August 30 - September 3, 1993.
58. "BiCMOS High Frequency Linear Bandpass-Based Current mode Oscillator for 3V supply Oscillator", J. Ramírez-Angulo and E. Sánchez-Sinencio, Proceedings of the 1993 European Conference on Circuit Theory and Design (ECCTD'93), pp. 1119-1132, Davos, Switzerland, August 30 - September 3, 1993.
59. "iDD Pulse Response Testing of Analog and Digital Circuits," J. S. Beasley, H. Ramamurthy, J. Ramírez-Angulo and M. Deyong, 1993 International Test Conference, pp. 626-634, October 17-21, Baltimore Ma, 1993.
60. "Use of MOSIS custom designed CMOS and BiCMOS transistor Arrays for teaching VLSI courses", J. Ramírez-Angulo and J. Beasley, Proceedings of 36th Midwest Symposium on Circuits and Systems, Detroit Mi, August 16-18, pp. 1176-1179, 1993.
61. "Design and implementation of a digital control for a continuous-time nonrecursive (FIR) filter," A. Martinez, L. Ortiz, A. de Luca, H. Perez and J. Ramírez-Angulo, Proceedings of 36th Midwest Symposium on Circuits and Systems, pp. 280-283, Detroit Mi, August 16-18, 1993.
62. "Continuous Time High Frequency Programmable Nonrecursive Filters," J. Ramírez-Angulo, A. de Luca, and H. Perez-Meana, Proceedings of 36th Midwest Symposium on Circuits and Systems, Detroit Mi, August 16-18, pp. 153-156, 1993.
63. "A Parallel Form Decision Feedback Equalizer," H. Perez-Meana, A. de Luca and J. Ramírez-Angulo, Proceedings of 36th Midwest Symposium on Circuits and Systems, Detroit Mi, August 16-18, pp. 1215-1218, 1993.
64. "Low Voltage BiCMOS Membership Function Circuit Building Block for Analog VLSI Fuzzy Control Implementation," J. Ramírez-Angulo, S. Badruzzamman and J. Coronado, Proceedings of IFIS-93: Industrial Fuzzy Control and Intelligent Systems, pp. 42-46, December 1-3, 1993, Houston, TX.
65. "Two approaches for VLSI current-mode filters based on canonical control structures," J. Ramírez-Angulo and E. Sánchez-Sinencio, IEEE International Symposium on Circuits and Systems, pp. 669-672, London, England, May 30- June 2, 1994
66. "Analog VLSI implementations of adaptive membership function for fuzzy controllers," J. Ramírez-Angulo, IEEE International Symposium on Circuits and Systems, London, England, May 30- June 2, 1994
67. "Low Voltage, High Slew Rate Bipolar and BiCMOS op-amp architectures with rail to rail common mode input and output swing capabilities," J. Ramírez-Angulo, 1994 IEEE International Symposium on Circuits and Systems, pp. 743-746, London, England, May 30- June 2, 1994
68. "Real Time Solution of Laplace equation Using Analog VLSI circuits," J. Ramírez-Angulo, K. Treece and M. DeYong, 1994 IEEE International Symposium on Circuits and Systems, pp. 95-98, London, England, May 30- June 2, 1994
69. "Current mirrors with low input voltage requirements for built in current sensors," J. Ramírez-Angulo, 1994 IEEE International Symposium on Circuits and Systems, pp. 529-532, London, England, May 30- June 2, 1994
70. "Novel linear gain programmable Class AB current mirrors with constant bandwidth", J. Ramírez-Angulo, 1994 IEEE International Symposium on Circuits and Systems, pp. 545- 548, London, England, May 30- June 2, 1994
71. "A Programmable 1.8-18MHz, High Q Fully Differential Continuous Time Filter with 1.5V-2V Power supply," J.T. Nabitch, E. Sánchez-Sinencio and J. Ramírez-Angulo, 1994 IEEE International Symposium on Circuits and Systems, pp. 653- 657, London, England, May 30- June 2, 1994
72. "Current mirrors with low input voltage requirements for built in current sensors," J. Ramírez-Angulo, 37th Midwest symposium on Circuits and Systems, pp. 107-110, Lafayette, LA, August 3-5, 1994
73. "Low Voltage BiCMOS Comparator for Charge Threshold Detection," J. Ramírez-Angulo, G. Gonzalez-Altamirano and A. de Luca, 37th Midwest symposium on Circuits and Systems, pp. 1137-1140, Lafayette, LA, August 3-5, 1994
74. "Low Voltage Current Mode and Voltage Mode Min and Max Circuit Building Blocks for Analog CMOS Fuzzy Processors," 3rd International Conference on Fuzzy logic and Computing, Lizuka, Japan, August 1-3, 1994.
75. "Analog Propose of Adaptive Filter Using All Pass Functions and LMS Approach," A. Martinez-Gonzalez, L. Ortiz-Balbuena, H. Perez-Meana, L. Nino de Rivera and J. Ramírez-Angulo, Proceedings of International Symposium on Information Theory and Applications, Sydney Australia, 20-24 November 1994, pp. 1351-1355.
76. "Design of VLSI Systems at New Mexico State University," J. Ramírez-Angulo, SACNAS Conference, January 5-9 1995, El Paso, TX.
77. "A BiCMOS Universal Membership Function Circuit," J. Ramírez-Angulo, 1995 IEEE International Symposium on Circuits and Systems, Seattle, WA, April 30, May 3, 1994, pp.275-278
78. "Current-Mode and Voltage Mode VLSI Fuzzy Processor Architectures," J. Ramírez-Angulo, K. Treece, P. Andrews and T.Choi, 1995 IEEE International Symposium on Circuits and Systems, Seattle, WA, April 30, May 3, 1994, pp.1156-1159.
79. "Yet another low voltage four quadrant CMOS multiplier," J. Ramírez-Angulo, 38th Midwest Symposium on Circuits and Systems, pp. 405-408, Rio de Janeiro , Brazil, August 13-16, 1995.
80. "OTA-GS filters: The new Face of RC active filters," J. Ramírez-Angulo,and G. Gonzalez-Altamirano, 38th Midwest Symposium on Circuits and Systems, pp. 1329-1332, Rio de Janeiro , Brazil, August 13-16, 1995.
81. "Low Supply Voltage OTA architectures Using Floating Gate Transistors, S.C. Choi, and J. Ramírez-Angulo, 38th Midwest Symposium on Circuits and Systems, pp. 158-161, Rio de Janeiro , Brazil, August 13-16, 1995.
82. "Building Blocks of Filter Tuning System Using Analog VLSI Fuzzy Logic Controller," S.C. Choi, E. Sánchez-Sinencio and J. Ramírez-Angulo, 38th Midwest Symposium on Circuits and Systems, pp. 389-392, Rio de Janeiro , Brazil, August 13-16, 1995.
83. "Analog VLSI Implementation of a New Algorithm for Solving Generalized Systems of Linear Equations," N.C. Carneiro, L. Caloba and J. Ramírez-Angulo, 38th Midwest Symposium on Circuits and Systems, pp. 965-968, Rio de Janeiro , Brazil, August 13-16, 1995.
84. "A new Algorithm for Analog Matrix Inversion," N.C. Carneiro, L. Caloba and J. Ramírez-Angulo, 38th Midwest Symposium on Circuits and Systems, pp. 401-404, Rio de Janeiro , Brazil, August 13-16, 1995.
85. "An idd Transient Analysis Technique for Defect Detection in Digital Integrated Circuits," J. Beasley, J. Ramírez-Angulo and R. Steiner, 38th Midwest Symposium on Circuits and Systems, pp. 286-289, Rio de Janeiro Brazil, August 13-16, 1995.
86. "Comparative study of publications of Mexico listed in Science Citation Index,"(in spanish), J. Ramírez-Angulo, VI Annual Meeting of the Researchers of the state of Chihuahua, Chihuahua City, Mexico, December 1-3 ,1995
87.
"Continuous Time Adaptive Filter
Structure," L. Ortiz-Balbuena, A. Martinez-Gonzalez, H. Perez-Meana, L.
Nino de Rivera and J. Ramírez-Angulo, IEEE
ICASP International Conference on Acoustics, Speech and Signal Processing,
pp. 1061-1064, Detroit, Mi. May
1995.
88.
"Sistemas
Analogicos VLSI," J. Ramírez-Angulo,
Electro 85, (Plenary Talk), 23-27 Octubre 1995
89. "Implementation of VLSI analog adaptive filters," A. Diaz-Sánchez and J. Ramírez-Angulo, Proceedings of IEEE Conielecomp, Puebla, Mexico, February 28-March 1, 1996
90. "High Speed IDDQ Current Sensors for VLSI System Testing," J. Ramírez-Angulo and G. González-Altamirano, 1996 IEEE International Symposium on Circuits and Systems, Atlanta, Georgia, May 8-12, 1996, pp. I-389-392.
91. "Low Voltage continuous time filters with OTAs and gain stages," J. Ramírez-Angulo and G. González-Altamirano, 1996 IEEE International Symposium on Circuits and Systems, Atlanta, Georgia, May 8-12, 1996, pp. II 493-496
92. "A +-0.75V BiCMOS multiplier with rail-rail input signal swing", J. Ramírez-Angulo, 1996 IEEE International Symposium on Circuits and Systems, Atlanta, Georgia, May 8-12, 1996, pp. 242-245.
93. "Analog VLSI Fuzzy Processor Architectures Based on Multiple-input Floating Gate Transistors," J. Ramírez-Angulo, V. Quintana, S.C.Choi, Proc. of 1996 World Automation Congress, Montpellier, France, May 27-30, 1996, pp. 539-544.
94. “Design and implementation of VLSI Voltage Mode Adaptive filters," A. Diaz-Sánchez and J. Ramírez-Angulo, 1996, Midwest Symposium on Circuits and Systems,Ames Iowa, August 11-13, 1996
95. "A novel Slew-Rate Enhancement Technique for One Stage Operational Amplifiers," J. Ramírez-Angulo, Midwest Symposium on Circuits and Systems, Ames Iowa, Aug. 11-13 1996
96. “High Speed Digital VLSI Fuzzifier," J. Ramírez-Angulo, J. Zrilic, A. Beltran, Midwest Symposium on Circuits and Systems, August 11-13, Ames Iowa, 1996
97. "A Compact High Frequency Differential Analog Adder," A. Diaz-Sánchez and J. Ramírez-Angulo, Midwest Symposium on Circuits and Systems, Ames Iowa, August 11-13 1996
98. "Ultracompact Low-voltage Analog CMOS Multiplier Using Multiple Input Floating Gate Transistors, J. Ramírez-Angulo, 1996 European Solid State Circuits Conference, pp. 99-103.
99. "Fast Sample Data Wavelet Transform CMOS VLSI implementation," G. Gonzalez-Altamirano, A. Diaz-Sánchez and J. Ramírez-Angulo, Midwest Symposium on Circuits and Systems, Ames Iowa, August 11-13 1996
100. "A new Universal Analog Fuzzifier Based on Operational Transconductance Multiplier," P. Saavedra, J. Ramírez-Angulo and J. Zrilic, NASA URC Technical Conference on Education Space, Autonomy, Earth and Environment, Feb. 16-19, 1997
101. "Various Hardware Implementations of Membership function generators," P. Saavedra, D.G. Zrilic, J. Ramírez-Angulo and B. Yuan, NASA URC Technical Conference on Education Space, Autonmy, Earth and Environment, Feb. 16-19, 1997, pp. 849-855
102. "Hardware Implementation of Memebership Function Look-up table Approach," T. Peterson, D. Zrilic and J. Ramírez-Angulo, B. Yuan NASA URC Technical Conference on Education Space, Autonmy, Earth and Environment, Feb. 16-19, 1997, pp. 579-580
103. "Piecewise linear membership function generator- Divider Approach," R. Hart, G. Martinez, B. Yuan, D. Zrilic and J. Ramírez-Angulo, NASA URC Technical Conference on Education Space, Autonmy, Earth and Environment, Feb. 16-19, 1997, pp. 325-330
104. "Modeling Multiple-Input Floating Gate Transistors for Analog Signal Processing," J. Ramírez-Angulo, G. Gonzalez-Altamirano and S.C. Choi, IEEE International Symposium on Circuits and Systems, Hong Kong, June 9-12 1997.
105. "A Novel Sample-Data Adaptive Filter," A. Diaz-Sánchez and J. Ramírez-Angulo, IEEE International Symposium on Circuits and Systems, Hong Kong, June 9-12 1997.
106. "A Current-Mode Continuous Time Adaptive Filter," A. Diaz-Sánchez and J. Ramírez-Angulo, 40th Midwest Symposium on Circuits and Systems, Santa Barbara, CA, August 3-6, 1997.
107. "New Analog Current-mode/Voltage-Mode Fuzzifier with Continuously Adjustable Parameters," J. Ramírez-Angulo, Jorge Zrilic, Patricias Saavedra and Antonio Lopez, 40th Midwest Symposium on Circuits and Systems, Santa Barbara, CA, August 3-6, 1997.
108. "A new Programmable Logic Family Using Multiple-Input Floating Gate Transistors," J. Ramírez-Angulo and G. Gonzalez-Altamirano, 40th Midwest Symposium on Circuits and Systems, Santa Barbara, CA, August 3-6, 1997, pp. 354-357
109. "A continuous-time Analog Median Filter," Alejandro Diaz-Sánchez, J. Ramírez-Angulo and Antonio Lopez. IEEE-NSIP 97, McKinack Island, Michigan, Sept. 8-10, 1997
110. "An analog Approximation to median filtering," Alejandro Diaz-Sánchez, J. Ramírez-Angulo and Antonio Lopez, ELECTRO'97, pp. 111-114, Chihuahua, Mexico, October 27-31 !997, .
111. "A Current-mode continuous time adaptive filtering," Alejandro Diaz-Sánchez, and J. Ramírez-Angulo, ELECTRO'97, pp. 106-110, Chihuahua, Mexico, October 27-31 1997.
112. "Building Blocks of Linear and Nonlinear Circuits Based on Operational Transconductance Amplifiers," Anthony Esquibel, Spyros Andreou and J. Ramírez-Angulo, Nasa URC Technical Conference 98, February 22-26, 1998, Hunstsville Alabama,
113. "Novel Programmable Linear and Nonlinear Oscillator Architectures," Catharine Rice and J. Ramírez-Angulo, Nasa URC Technical Conference 98, February 22-26, 1998, Hunstsville Alabama,pp. 618-622
114. "An example of Mixed Processing of Delta Sigma Modulated Pulse Stream," Catharine Rice and J. Ramírez-Angulo, Nasa URC Technical Conference 98, February 22-26, 1998, Hunstsville Alabama,
115. “Low Voltage Analog Modular expandable VLSI fuzzy inference engine, J. Ramírez-Angulo and J. Zrilic, World Automation Conference 98, May 10-14 98 Anchorage, Alaska, pp. 815-821.
116. “Feedforward Robust Fuzzy Control, D. Zrilic, E. Kosmatopoulus and J. Ramírez, WAC'98 Anchorage Alaska, May 98, pp. 213-218.
117. "High Performance Cell for Solving Real Time Field Problems Using the Resistive Grid Method," N.C. Carneiro and J. Ramírez-Angulo, 1998 IEEE International Conference on Circuits and Systems, May 31 - June 3, 1998, Monterrey, CA.
118. "Analog Building Blocks for a Sampled Data Fast Wavelet Transform CMOS VLSI implementation," G. Gonzalez-Altamirano and J. Ramírez-Angulo, 1998 IEEE International Conference on Circuits and Systems, May 31 - June 3, 1998, Monterrey, CA.
119. ”An Adaptive Cell for Resistive Grid Applications,” N. Carneiro and J. Ramírez-Angulo, Second International Workshop on Design of Mixed-Mode Integrated Circuits and Systems, Guanajuato Mexico, July 27-29 1998
120. “A High Speed Analog Median Filter in CMOS Technology,” A. Diaz-Sánchez, J. Ramírez-Angulo, A. Lopez and E. Sánchez-Sinencio, IEE-ICECS´98, September 7-10 1998, Lisboa Portugal pp. 381-384.
121. “A low power analog median filter,” A. Diaz-Sánchez and J. Ramírez-Angulo, IEEE Second International Workshop on Design of Mixed Mode Integrated Circuits and Applications, Guanajuato, MX July 27-29, 1998, pp. 49-51
122. “A Fuzzy Processor Based on Symmetric Triangular Membership Functions, “S.M. Abdel-Hafeez, S. Straks and J. Ramírez-Angulo, NASA-URCTC-98, Hunstville, Al, Feb. 98 pp. 618-622, pp. 237-242.
123.
"Novel Low Power and Constant gm
operational amplifier using multiple-input floating-gate transistors," S.C
Choi and J. Ramírez-Angulo. IEEE Analog
VLSI Workshop
124.
“Generador
de Funciones de Pertenencia para Procesado Difuso adaptivo,” A. Lopez-Martin,
J. Ramírez-Angulo and A. Carlosena SAAEI98, Pamplona, Spain, September 16-18
1998.
125. “Compact Low-Voltage Analog Defuzzifier Using Multiple-Input Floating-Gate Transistors, “ J. Ramírez-Angulo, S.C. Choi and D. Zrilic, Proceedings DCIS'98 Madrid November 17-20 1998, pp. 332-337.
126. “Linear Amplifiers with very high Gain-Bandwidth Product, “ J. Ramírez-Angulo.1999 IEEE International Symposium on Circuits and Systems, Orlando Fl, May 30-June 2, pp. II-620-623
127. “CMOS op-amps for a single supply close to a threshold voltage and with almost rail-to-rail signal swing, “ J. Ramírez-Angulo, A Torralba, R.G. Carvajal and J.Tombs 1999 IEEE International Symposium on Circuits and Systems, Orlando Fl, May 30-June 2, 99, pp. II-408-411.
128. “A comparison of architectures for a programmable fuzzy chip, “ T. Lund,A.Torralba, R.G. Carvajal and J .Ramírez-Angulo 1999 IEEE Internationa Symposium on Circuits and Systems, Orlando Fl, May 30-June 2, 99, pp. V-623-626.
129. D/A Conversion Based on Multiple Input Floating Gate MOST, A.J. Lopez-Martin, J. Ramírez-Angulo and a. Carlosena, Proceedings, Midwest Symposium On Circuits and Systems, August 8-11, 1999, Las Cruces, NM, pp. 149-152.
130. “An adaptive Cell for resistive grid applications, “ N. Carneiro and J. Ramírez-Angulo, Proceedings, Midwest Symposium On Circuits and Systems, August 8-11, 1999, Las Cruces, NM, pp. 304-308.
131. “A Compact Mixed-mode Block Fuzzifier, “ P. Saavedra, J. Ramírez-Angulo and J. Zrilic, Proceedings, Midwest Symposium On Circuits and Systems, August 8-11, 1999, Las Cruces, NM, pp. 494-496.
132. “A tunable low-voltage Transconductor and its application to HF Gm-C Filter Design,” F. Munoz, R.G. Carvajal and J. Ramírez-Angulo, Proceedings, Midwest Symposium On Circuits and Systems, August 8-11, 1999, Las Cruces, NM, pp. 826-829.
133. “Versatile CMOS and BiCMOS Linear Transconductor Circuits,” A. Lopez-Martin, J. Ramírez-Angulo and A. Carlosena, Proceedings, Midwest Symposium On Circuits and Systems, August 8-11, 1999, Las Cruces, NM, pp. 1024-1027.
134. “D/A Conversion Based on Multiple Input Floating Gate MOST, “ A.J. Lopez-Martin, J. Ramírez-Angulo and a. Carlosena, Proceedings, Midwest Symposium On Circuits and Systems, August 8-11, 1999, Las Cruces, NM, pp. 149-152
135. “Architectures for a programmable fuzzy logic chip. A case study”. T-Lund, A.Torralba, R.G.Carvajal, J.Ramírez-Angulo.Proc. of the XIV Design of Circuits and Integrated Systems Conference, DCIS’99, Palma de Mallorca (Spain), Nov. 16-19, 1999 pp.473-476.
136. "Two novel low voltage transconductors for VHF applications”. F.Muñoz, A.Torralba, R.G.Carvajal, J.Ramírez-Angulo, Proc. of the XIV Design of Circuits and Integrated Systems Conference, DCIS’99, Palma de Mallorca, (Spain) Nov. 16-19 1999, 533-537.
137. "Integration of multiple-input floating-gate transistors into a top-down CAD design flow,” J.Tombs, J.Ramírez-Angulo, R.G.Carvajal, A.Torralba, Proc. of the XIV Design of Circuits and Integrated Systems Conference, DCIS’99, (Spain) Palma de Mallorca, Nov. 16-19 1999, pp. 767-771
138. "VHF Tunable CMOS Low-Voltage Linear Transconductor and its application to HF Gm-C filter design,” F.Muñoz, A.Torralba, R.G.Carvajal, J.Ramírez-Angulo, Proc. of the XIV Design of Circuits and Integrated Systems Conference, DCIS’99, Palma de Mallorca, (Spain) Nov. 16-19 1999, 451-454.
139. “Compact Low Voltage Analog Defuzzifers Using Multiple Input Floating Gate Transistors, J. Ramírez-Angulo, S.C. Choi, and J. Zrilic," 2000 World Automation Conference, June 11-16, 2000, Maui, Hawai, pp. ISCCI-9963.
140. “Two new VHF tunable CMOS Low-Voltage Linear Transconductor and its Application to HF gm-C filter Design," F. Munoz, A. Torralba, J. Toms, and J. Ramírez-Angulo, IEEE International Symposium on Circuits and Systems (ISCAS) 2000, May 28-31, Geneve, Switzerland, pp. V-173-176
141. "Floating Gate Based Tunable Low-Voltage Linear Transconductor and its application to HF,". Munoz, A. Torralba, J. Toms, and J. Ramírez-Angulo, IEEE International Symposium on Circuits and Systems (ISCAS) 2000, May 28-31, Geneve, Switzerland, pp. IV-465-468.
142. "High Speed High Precision Voltage Mode MIN/MAX Circuits in CMOS Technology, " R.G. Carvajal, J. Ramírez-Angulo and J. Tombs, IEEE International Symposium on Circuits and Systems (ISCAS) 2000 , May 28-31, Geneve, Switzerland, pp. V-13-16.
143. “A 1.5V linear transconductor with wide bandwidth ands wide input and output signal swings," J. Ramírez-Angulo, R.G. Carvajal, A. Torralba and j. Martinez-Heredia, IEEE International Symposium on Circuits and Systems (ISCAS) 2000, May 28-31, Geneve, Switzerland, pp. V-161-164
144. "A Fully Parallel CMOS Analog Median Filter, " A. Diaz-Sánchez, J. Ramírez-Angulo, A. Lopez and E. Sánchez-Sinencio,” IEEE International Symposium on Circuits and Systems (ISCAS) 2000, May 28-31, Geneve, Switzerland, pp. II-593-596.
145. "1.4V Supply, wide swing, high frequency CMOS Analogue multiplier with high current efficiency," J. Ramírez-Angulo, R.G. Carvajal, and . J. Martinez-Heredia, IEEE International Symposium on Circuits and Systems (ISCAS) 2000, May 28-31, Geneve, Switzerland, pp. V-533-536.
146. “Very Low-Voltage Class AB CMOS and Bipolar Precision Current rectifiers," J. Ramírez-Angulo,” R.G. Carvajal, J. Tombs and A. Torralba, IEEE International Symposium on Circuits and Systems (ISCAS) 2000, May 28-31, Geneve, Switzerland, pp. III-5-9.
147. “Modular Expandable Analog Defuzzifers Using Multiple Input Floating Gate Transistors," J. Ramírez-Angulo, S.C. Choi, and J. Zrilic, IEEE International Symposium on Circuits and Systems (ISCAS) 2000, May 28- 31, Geneve, Switzerland, pp. V-381-384.
148. "An Analog Median Filter for Low Power Applications," A. Diaz-Sánchez and J. Ramírez-Angulo, IEEE 43drd Midwest Symposium on Circuits and Systems. Lansing, MI, August 8-11, 2000, session WA6.
149.
"Analog VLSI Weighted Median
Filters," A. Diaz-Sánchez and J.
Ramírez-Angulo, IEEE 43drd Midwest Symposium on Circuits and Systems.
Lansing, MI, August 8-11, 2000, session WA6
150.
“Low Voltage High Performance CMOS Current
Mirrors," J. Ramírez-Angulo, R.G.
Carvajal and A. Torralba, IEEE 43drd Midwest Symposium on Circuits and
Systems. Lansing, MI, August 8-11, 2000, Session WA6.
151.
“Low supply voltage high performance CMOS
current mirror with low input and output voltage requirements, " J. Ramírez-Angulo, R.G. Carvajal and A.
Torralba, IEEE DCIS’2000 Design of Circuits and Integrated Systems 2000,
Montpelier, France, November 22-24th, ,2000.
152.
“ A four quadrant 1.4V supply, wide swing, high
frequency CMOS analogue multiplier with high current efficiency, " J. Ramírez-Angulo, R.G. Carvajal, A. Torralba
and J. Martinez-Heredia. IEEE DCIS’2000 Design of Circuits and Integrated
Systems 2000, Montpelier, France, November 22-24th, ,2000.
153.
“ A 1.1V Low-Power Sigma-Delta Modulator for
14b, 16KHz A/D conversion, " F.
Munoz, A.P. Vega-Leal, R.G. Carvajal, A.
Torralba and J. Ramirez-Angulo. IEEE DCIS’2000 Design of Circuits and
Integrated Systems 2000, Montpelier, France, November 22-24th, ,2000.
154.
“ Low Voltage class AB output stages for CMOS
op-amps using floating gate capacitors, "
R.G. Carvajal, A. Torralba and J. Ramirez-Angulo, J. tombs and F. Munoz.
IEEE DCIS’2000 Design of Circuits and Integrated Systems 2000,
Montpelier, France, November 22-24th, ,2000
155.
“ Class AB output stages for low-voltage CMOS
op-amps with accurate quiescent current control by means of dynamic biasing,
" A. Torralba, R.G. Carvajal, J.
Ramirez-Angulo, J. Martinez-Heredia and A.P. Vega-Leal. IEEE DCIS’2000
Design of Circuits and Integrated Systems
2000, Montpelier, France,
November 22-24th, ,2000
156.
“ High Speed Compact CMOS Circuits for
continuous-time linear weighted voltage addition, " J. Ramírez-Angulo. IEEE DCIS’2000 Design
of Circuits and Integrated Systems
2000, Montpelier, France, November
22-24th, ,2000.
157. "Low Voltage Continuous Time Tunable High Frequency Filters Based on Floating Gates and Dynamic Biasing Techniques," F. Munoz, A. Torralba, J. Toms, J. Ramirez-Angulo, 2001 Southwest Symposium on Mixed-Signal Design Austin, TX February 25-27, 2001
158. "Compact CMOS Circuits for High Speed continuous-time linear weighted voltage addition," Jaime Ramirez-Angulo and Francisco Ledesma, IEEE International Symposium on Circuits and Systems, May 6-9, 2001 Sidney Australia, pp. I-707-I-710.
159.
"A new Class AB differential Input stage
for implementation of low voltage high slew rate op-amps and linear
transconductors," J.
Ramirez-Angulo, R. Gonzalez-Carvajal, A. Torralba and Carlos Nieva, IEEE
International Symposium on Circuits an Systems, May 6-9, 2001 Sidney Australia, pp. I-671-I-674.
160.
"A 1.1V Low-Power sigma-delta Modulator for
14-b 16KHz A/D Conversion," F.
Munoz, A.P. VegaLeal, R. G. Carvajal, A.
Torralba, J. Tombs and J. Ramírez-Angulo,
IEEE International Symposium on Circuits an Systems, May 6-9,
2001 Sidney Australia, I-619-I-622
161.
“Low voltage class AB output stages for CMOS
op-amps using floating capacitors,"
R. G. Carvajal, A. Torralba, J. Tombs and J. Ramírez-Angulo, F.
Munoz, IEEE International Symposium
on Circuits an Systems, May 6-9, 2001, Sidney Australia, I-13-I-16.
162. "Some techniques for low-voltage operation of continuous-time analog CMOS circuits," Jaime Ramirez-Angulo, 2nd Dallas IEEE Workshop on Low-Voltage Mixed-signal Circuits and systems, March 26th 2001, Dallas, TX
163.
"Innovative Built-In Self-Test Schemes for
On-Chip Diagnosis, Compliant with the IEEE 1149.4 Mixed-Signal Test Bus
Standard: Time to Market-Reduction," Gladys Omayra Ducoudray Acevedo,
Jaime Ramirez-Angulo Proceedings of the Third IEEE International Conference on Devices, Circuits and Systems
(ICCDCS) , February 11-12, 2001 Cancun, Mexico, pp. 131-134
164.
“An analog median filter with Feedforward
adaptation. “ Alejandro Díaz-Sánchez and Jaime
Ramírez-Angulo, 45th
Midwest Symposium on Circuits and Systems, Dayton, Ohio, August 14-17 2001
165.
“Built In self test Scheme for on-Chip Diagnosis
compliant with IEEE 1149.4 Mixed-signal test bus standard,” G. O.
Ducoudray-Acevedo and Jaime Ramirez-Angulo, SAAEI’01, Matanzas Cuba
17-19 Sept. 2001, SP2-IV
166.
“Effect of restrained neighborhood in analog
median filters” A. Diaz-Sanchez and
Jaime Ramirez-Angulo, SAAEI’01, Matanzas Cuba 17-19 September
2001
167.
“New
Architectures of class AB operational amplifiers for low-voltage low-power
applications,” Jaime Ramirez-Angulo1,,
Ramon Gonzalez-Carvajal2, Antonio Torralba2 and C. Nieva,
SAAEI’01, Matanzas Cuba 17-19 Sept. 2001
168.
“Analog Adaptive Median Filters for Impulse Noise Removal,”Alejandro Díaz-Sánchez, Jaime
Ramírez-Angulo, Electro 2001, pp. 287-290, October 22-26, 2001 Chihuahua,
Mexico.
169.
“Behavior Analysis and Testing of Resistive Opens in the clock
Circuitry of Memory Elements, “ Antonio Zenteno, Victor Champac and Jaime
Ramirez-Angulo Proceedings of 3rd
Latin American Test Workshop,
Montevideo, Uruguay, February 10-13th, 2002
170.
Gladys
Omayra Ducoudray Acevedo, Jaime Ramirez-Angulo, “ VDDQ:
A Buitl In Selft-test Scheme for Analog On-chip
Diagnosis Compliant with the IEEE with
the 1149.4 Mixed-Signal Test Bus Standard.,“ Fourth IEEE International Caracas Conference on Devices, Circuits and
Systems, Aruba, April 17-19,
2002, pp. 1026-1 1026-4
171.
”A 1.1V
Very Low-Power SD
Modulator For 14-b 16KHz A/D Conversion Using A Novel Class AB Transconductance
Amplifier,”. J. Galan , A. P. VegaLeal1,
F. Muñoz1, R. G. Carvajal 1, A. Torralba 1, J.
Tombs1 and J. Ramírez-Angulo, 2002 IEEE International Symposium on
Circuits and Systems, May 26-29, 2002, Scottsdale, AZ pp. II-616-II-619
172.
“Comparison of two Schemes for Continuous-time sub-volt Op-amp Operation,”
Jaime Ramirez-Angulo, Antonio Torralba and Ramon Gonzalez-Carvajal, 2002 IEEE International Symposium on
Circuits and Systems, May 26-29, 2002, Scotttsdale, AZ. pp.I-305 I-308
173.
“The Multiple Input Linear Weighted Differential
Amplifier: a New Versatile Analog
Circuit Building Block ,” Jaime
Ramirez-Angulo and Francisco Ledesma, 2002 IEEE International Symposium on Circuits and Systems, May
26-29, 2002, Scottsdale, AZ, pp. III-747-750
174.
“Low-Power Low-Voltage Class-AB Linear OTA For
HF Filters With A Large Tuning Range,” J.A.Galán2, R.G. Carvajal1,
F.Muñoz1, A.Torralba1, J.Ramírez-Angulo, 2002 IEEE International Symposium on
Circuits and Systems, May 26-29, 2002, Scottsdale, AZ pp. II-9-II-12
175. “The Flipped Voltage Follower: A useful cell for low-voltage low-power circuit design.” J.Ramírez-Angulo2, R.G.Carvajal1,, A.Torralba1, J. Galan1, A. P. Vega-Leal1, and J. Tombs, 2002 IEEE International Symposium on Circuits and Systems, May 26-29, 2002, Scottsdale, A, pp. II-615-II618
176. ”A Simple technique to significantly enhance slew rate and bandwidth of one-Stage cmos operational amplifiers,” Jaime Ramirez-Angulo and Michael Holmes, 2002 IEEE International Symposium on Circuits and Systems, May 26-29, 2002, Scottsdale, A. pp. II-II-835-II-838.
177. “Innovative Built-in self-test Scheme for on-chip Diagnosis, Compliant With the IEEE 1149.4 Mixed-signal Test Bus Standard, “ Gladys Omayra Ducoudray Acevedo , Jaime Ramirez-Angulo, , 2002 IEEE International Symposium on Circuits and Systems, May 26-29, 2002, Scottsdale, Az., pp. I-148-I-152
178. ”Compact Continuous-time analog rank-order Filter Implementation in CMOS technology,” Jaime Ramírez-Angulo, Chad Lackey and Alejandro Díaz-Sanchez,, 2002 IEEE International Symposium on Circuits and Systems, May 26-29, 2002, Scottsdale, Az, pp. V-65-V-68
179. Low-power low-voltage analog electronic circuits using the flipped voltage follower, .” J.Ramírez-Angulo2, R.G.Carvajal1,, A.Torralba1, J. Galan1, A. P. Vega-Leal1, and J. Tombs, 2002 International Symposium on Industrial Electronics, L’Aquila, Italy July 8-11, 2002.
180. “Comparison of New and Conventional Low Voltage Current Mirrors, “ F. Ledesma, J. Ramirez-Angulo and R, 2002 IEEE Midwest Symposium on Circuits and Systems, Tulsa, OK, Aug. 4-7 2002, pp. II-49-52
181. “A new Family of low voltage circuits based on quasi-floating gate transistors, “ C. Urquidi J. Ramirez-Angulo , 2002 IEEE Midwest Symposium on Circuits and Systems, Tulsa, OK, Aug. 4-7 2002, pp. I-93-96
182. “On-chip iDD pulse response method using a high speed dynamic current sensor, “ G Omaira Ducoudray and J. Ramirez-Angulo, 2002 IEEE Midwest Symposium on Circuits and Systems, Tulsa, OK, Aug. 4-7 2002.pp. II-282-285.
183. “New Architectures of Class AB CMOS and BiCMOS operational amplifier using local common mode feedback, “ M. Holmes, J. Ramirez-Angulo and R, 2002 IEEE Midwest Symposium on Circuits and Systems, Tulsa, OK, Aug. 4-7 2002
184. “Class-AB Linear OTA For Low-Power Low-Voltage HF Filters With A Large Tuning Range,” Juan Antonio Gomez Galan, Ramon Gonzalez Carvajal, Fernando Muñoz Chavero, Antonio Torralba , DCIS 2002 Nov. 19-22, Santander, Spain,
185.
“Low voltage Class-AB Output Stages for CMOS
Op-Amps,” R. Carvajal, A. Torralba, J. Ramirez-Angulo, J. Tombs, F. Muñoz,
ESSCIRC’02, September 24-26, Florence, Italy
186.
“A New
Compact Low-Power High Slew Sate Class AB CMOS Buffer, “A.Torralba,
R.G.Carvajal, J. Galán, and J.Ramírez-Angulo, ISCAS 2003, May 25-28, Bangkok, Thailand
187. “A Low-Power Low-Voltage OTA-C Sinusoidal Oscillator with more than two decades of Linear Tuning Range, “ J.Galán, R.G. Carvajal1, F.Muñoz, A.Torralba, J.Ramírez-Angulo ISCAS 2003, May 25-28, Bangkok, Thailand
188. “New output stage for low supply voltage, high-performance CMOS current mirrors, “ A.Torralb1, R.G. Carvajal, F. Muñoz and J. Ramírez-Angulo, ISCAS 2003, May 25-28, Bangkok, Thailand
189. “New low-power low-voltage differential class-AB OTA for SC circuits,” G. Carvajal, J. Galán, J. Ramírez-Angulo and A. Torralba, ISCAS 2003, May 25-28, Bangkok, Thailand
190. “Sub-volt supply analog circuits based on quasi-floating gate transistors,” Jaime Ramirez-Angulo, Carlos Urquidi, Ramon Gonzalez-Carvajal and Antonio Torralba ISCAS 2003, May 25-28, Bangkok, Thailand
191. “Low-Voltage Closed-Loop Amplifier Circuits Based on Quasi-Floating Gate Transistors,” Jaime Ramirez-Angulo, Antonio J. Lopez-Martin and Ramon G. Carvajal, ISCAS 2003, May 25-28, Bangkok, Thailand
192.
“Low Voltage Low-Power Wideband CMOS Current
Conveyors Based on The Flipped Voltage Follower,” Antonio J. Lopez-Martin, Jaime Ramirez-Angulo, and Ramon G.
Carvajal, ISCAS 2003, May 25-28,
Bangkok, Thailand
193. “A Novel Design Technique for Very Low-Voltage MOS Translinear Circuits,” Antonio J. Lopez-Martin, Alfonso Carlosena and Jaime Ramirez-Angulo, ISCAS 2003, May 25-28, Bangkok, Thailand
194. “New Very Compact Continuous-Time Low-Voltage Analog Rank-Order Filter Architecture, “ Jaime Ramírez-Angulo1 , R. Gonzalez-Carvajal and Gladys Omayra Ducoudray , ISCAS 2003, May 25-28, Bangkok, Thailand
195. “Extremely Low Supply Voltage Circuits Based on Quasi-Floating Gate Supply Voltage Boosting”, Fernando Munoz, Antonio Lopez-Martin, Ramon G. Carvajal, Jaime Ramirez-Angulo, A.Torralba, Meghraj Kachare and B. Palomo , , ISCAS 2003, May 25-28, Bangkok, Thailand
196.
“A New 1.5V Linear Transconductor with High
Output Impedance in a Large Bandwidth,” A.Torralba, J. Martmnez-Heredia,
R.G.Carvajal and J.Ramirez-Angulo, , ISCAS 2003, May 25-28, Bangkok,
Thailand
197.
“A high-speed Dynamic Current Sensor for iDD
Test Based on the Flipped Voltage Follower, “
Gladys Omayra Ducoudray, Ramon González-Carvajal, Jaime Ramírez-Angulo,
SSMSD February 23-25 2003, Las Vegas, Nevada
198.
A New Power Efficient Fully Differential Low
Voltage Two Stage Op-Amp Architecture ,” J. Ramírez-Angulo S. Thoutam G.O.
Ducoudray and R.G. Carvajal, Proceedings of the VLSI'03 conference : June
23-26, 2003, pp. 87-91, Las Vegas, Nevada, USA.
199.
“Highly Linear Wide Input Range CMOS OTA
Architectures Operating in Subthreshold
and Strong Inversion,” J.
Ramirez-Angulo, C. Durbha, G. O. Ducoudray-Acevedo and R. G. Carvajal, VLSI'03:
June 23-26, 2003,pp. 345-350, Las Vegas,
Nevada, USA.
200.
“Low
Voltage Wide gm Adjustment Range Highly Linear BiCMOS OTA,” J.
Ramírez-Angulo , C. Durbha, G. O.
Ducoudray-Acevedo and R.G. Carvajal 11th
Annual NASA Symposium on VLSI Design , Coeur d’Alene Idaho May 28-29, 2003
201. “A 1.5V, 8-BIT, 10MS/S CMOS Pipeline Analog-to-Digital Converter". B. Palomo, F. Muñoz, R.G. Carvajal, A. Torralba and J. Ramírez-Angulo, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain
202. "New low-voltage high-gain differential OTA for SC circuits" R.G. Carvajal, B. Palomo, A. Torralba, F. Muñoz and J. Ramírez-Angulo, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain.
203. "A Simple Alternative to Switched-Op-amps or Voltage Doublers For Very Low Voltage SC Circuits". F. Muñoz, J. Ramírez-Angulo, A. Lopez-Martin , R.G. Carvajal, A.Torralba and B. Palomo, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain
204. "New low-power low-voltage differential class-AB OTAs for SC circuits". Ramon Carvajal, Juan Galan, Jaime Ramirez-Angulo, Antonio Torralba and Bernardo Palomo, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain
205. "A Novel Technique for Very Low Voltage Rail-to-Rail CMOS Track-and-Hold Circuits". Jaime Ramirez-Angulo,Antonio J. López-Martín, Ramón G. Carvajal and Chad Lackey, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain
206. "Low-voltage CMOS four quadrant multipliers based on Flipped voltage followers". Jaime Ramirez-Angulo, Shanta Thoutam, Antonio Lopez-Martin and Ramon G. Carvajal, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain
207. "A Low-Voltage Wide Tuning Range gm-C VCO Using A Class-AB Linear OTA". Juan Galan,Ramom G. Carvajal, Fernando Muñoz, Antonio Torralba, Jaime Ramirez-Angulo and Marta Laguna, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain.
208. "A New Compact Low-Power High Slew-Rate Class AB CMOS Buffer". Antonio Torralba, Ramon Carvajal, Juan Galan, Jaime Ramirez-Angulo and Marta Laguna, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain
209. "MOS and bipolar translinear cells and applications for implementation of low distortion OTAs". Jaime Ramirez-Angulo, Chandrika Durbha, Gladys Omayra Ducoudray, Ramon G. Carvajaland Meghraj Kachare, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain
210. "Resistorless and capacitorless schemes for continuous-time linear weighted voltage addition using multiple input fully differential operational amplifiers". Francisco Ledesma and Jaime Ramirez-Angulo, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain.
211. "Very Low Voltage Analog Signal Processing Based on the MOS Translinear Principle". Carlos A. De La Cruz Blas, Sara Gallego, Antonio J. López-Martín, Alfonso Carlosena and Jaime Ramirez-Angulo, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain
212. "A fully differential, 1.5V supply, high linearity, large bandwidth transconductor with high output impedance ". Juana Martínez-Heredia, Antonio Torralba, Ramón Carvajal and Jaime Ramírez-Angulo, XVIII Conference on Design of Circuits and Integrated Systems DCIS 2003, November 18-21, 2003, Ciudad Real, Spain
213.
“1.5V
Rail-to-Rail Programmable-Gain CMOS Amplifier, “ Jaime
Ramírez-Angulo 1, Antonio J. López-Martín , Ramón G. Carvajal, and
Chad Lackey, ESSCIRC '03. 16-18
Sept., 2003, Estoril, Lisboa Pages:373 -
376.
214.
“Techniques
for very low-voltage operation of continuous-time analog CMOS circuits,” J.
Ramirez-Angulo, R. Gonzalez-Carvajal, A. Lopez-Martin, Proceedings 17th
International Conference on VLSI Design, 2004. 5-9 Jan. 2004 Pages:39 - 44
215. “A novel serial multiplier using floating-gate transistors, “Luis F. Cisneros-Sinencio, Alejandro Diaz-Sanchez, Jaime Ramirez-Angulo, 2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada pp. I-861-864
216. “Novel Architectures of Class AB CMOS current mirrors with programmable gain, Chandrika Durbha, Jaime Ramírez-Angulo, Antonio Lopez-Martin and Ramon Gonzalez-Carvajal., , 2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada , pp. IV-760-763.
217. “Power Efficient Fully Differential Low-Voltage Two stage Class AB/AB op-amp architectures,”, Shanta Thoutam, Jaime Ramírez-Angulo, Antonio Lopez-Martin and Ramon Gonzalez-Carvajal., , 2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada pp. I-733-736
218. “Highly Linear Wide tuning range CMOS transconductor operating in moderate inversion,”, Chandrika Durbha, Jaime Ramírez-Angulo, Antonio Lopez-Martin and Ramon Gonzalez-Carvajal., , 2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada, I-805-808.
219. “A novel family of Low-voltage very low power super class AB OTAs with significantly enhanced slew rate and Bandwidth,”, Sushmita Baswa, Jaime Ramírez-Angulo, Antonio Lopez-Martin and Ramon Gonzalez-Carvajal., , 2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada, I-729-732.
220. “Winner take-all class AB input stage : A novel concept for low-voltage power efficient class AB amplifiers,”, Sushmita Baswa, Jaime Ramírez-Angulo, Antonio Lopez-Martin and Ramon Gonzalez-Carvajal., , 2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada, pp. I-1028-1031.
221. “Compact tunable CMOS OTA with high linearity,”, Meghraj Kachare, Jaime Ramírez-Angulo, Antonio Lopez-Martin and Ramon Gonzalez-Carvajal., , 2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada I-693-696.
222. “A low-voltage rail-to-rail V-I conversion scheme for applications in current –mode a/D converters,”, Rahul Shukla, Jaime Ramírez-Angulo, Antonio Lopez-Martin and Ramon Gonzalez-Carvajal., , 2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada I-916-919.
223. “High Speed, High precision Analog Rank order filter in CMOS technology,”, Ramon Gonzalez Carvajal, Jaime Ramírez-Angulo, Gladyrs Omayra Ducoudray-Acevedo, and Antonio Lopez-Martin., 2004 IEEE International Symposium on Circuits and Systems, May 23-26 2004, Vancouver, Canada pp. I-793-796.
224.
“Low-voltage CMOS Analog Four quadrant
multiplier based on flipped voltage followers,”, Jaime Ramírez-Angulo, Shanta
Thoutam, Ramon Gonzalez-Carvajal.and Antonio Lopez-Martin, , 2004 IEEE
International Symposium on Circuits and Systems, May 23-26 2004, Vancouver,
Canada, I-681-684
225.
“A New Flip Flop Gate Based on Floating Gates,”
L. F. Cisneros Sinencio, A. Diaz-Sanchez, J. Ramirez-Angulo, ICEEE and X CIE, Acapulco, Mexico, September
8-10, 2004, pp. 219-221.
226.
S. Baswa, M. Bikumandla , J. Ramírez-Angulo, A.
J. López-Martín , R.G. Carvajal: “Low-Voltage Low-Power Super Class-AB CMOS
OP-AMP with Rail-to-Rail Input/Output Swing.”, Fifth International Caracas
Conference on Devices, Circuits and Systems, November 3-5 2004, Punta Cana,
Dominican Republic
227.
J. Ramírez-Angulo, A.. J. López-Martín, R.
G. Carvajal “New Low-Voltage Class AB/AB CMOS Op-amp with
rail-to-rail input/output swing ,” Shanta Thoutam,
Milind-Subhash Sawant, XIX Conference on Design of Circuits and Integrated
Systems, Bordeaux, France, November 24-26, 2004
228.
A.
Torralba, R.G.Carvajal, F.Muñoz, J. Ramírez-Angulo, New Low Voltage Class-AB
CMOS Unity-Gain Buffer and Current Mirror, XIX Conference on Design of
Circuits and Integrated Systems, Bordeaux, France, November 24-26, 2004
229.
J. Ramirez-Angulo, C. Durbha, A.J. López-Martín,
and R. G. Carvajal ,”Tunable Gm-C Biquadratic Filter Operating in Moderate
Inversion “XIX Conference on Design of Circuits and Integrated Systems,
Bordeaux, France, November 24-26, 2004
230.
J. Ramírez-Angulo, A.. J. López-Martín, R.
G. Carvajal,” Very Low-Voltage Class-AB
CMOS Precision Current Rectifier and Current Mirror,” XIX Conference on
Design of Circuits and Integrated Systems, Bordeaux, France, November 24-26,
2004
231.
S.
Baswa, A. J. López-Martín, J. Ramirez-Angulo, and R. G. Carvajal,” A New
Family of Low-Voltage Power-Efficient Class AB CMOS OTAs,” XIX Conference on
Design of Circuits and Integrated Systems, Bordeaux, France, November 24-26,
2004
232.
A.
J. López-Martín, J. Ramirez-Angulo, C. Durbha, and R. G. Carvajal, “Fully-Differential
CMOS Current Conveyor Operating in Moderate Inversion,”, XIX Conference on
Design of Circuits and Integrated Systems, Bordeaux, France, November 24-26,
2004.
233.
P.
Rodiz-Obaya, J. J. Rodríguez-Andina, and J. Ramírez-Angulo “An accurate
algorithm for transistor sizing in analog CMOS design ,”, XIX Conference on
Design of Circuits and Integrated Systems, Bordeaux, France, November 24-26,
2004
234.
“Power-Efficient Super Class AB OTAs,” Antonio J. López-Martín,
Sushmita Baswa, Jaime Ramirez-Angulo, and Ramón G. Carvajal, ESSCIRC 2004,
21-23 September , 2004, Leuven, Belgien.
235.
“A Compact Micropower Class AB CMOS Sample
and Hold Circuit,” Xabier Ugalde, Antonio J. Lopez-Martin, Carlos A. De La Cruz Blas,
Alfonso Carlosena, Ramon G. Carvajal, Jaime Ramirez-Angulo, New Mexico State
University, USA, XX Conference on
Design of Circuits and Integrated Systems DCIS 2005, November 18-21, 2005,
Lisboa, Portugal
236.
“Class-AB Low-Voltage CMOS Unity-Gain
Buffers,” Mariano
Jimenez,
Antonio Torralba, University of Sevilla, S Ramon G. Carvajal, Jaime
Ramirez-Angulo, XX Conference on
Design of Circuits and Integrated Systems DCIS 2005, November 18-21, 2005,
Lisboa, Portugal
237.
”A Low-Voltage all Cascode High Performance CMOS
Current Mirror and Applications,” Annajirao Garimella, Lalitha Garimella, Jaime
Ramirez-Angulo, Ramon G. Carvajal, Antonio J. Lopez-Martin, XX Conference on Design of Circuits and Integrated Systems
DCIS 2005, November 18-21, 2005, Lisboa, Portugal
238.
“Low-Power Super Class AB OTAs based on
adaptive techniques,” Ramon G. Carvajal, Jaime Ramirez-Angulo, Antonio Lopez-Martin, Juan
Galan, Carlos Rubia-Marcos, XX Conference
on Design of Circuits and Integrated Systems DCIS 2005, November 18-21, 2005,
Lisboa, Portugal .
239.
“CMOS Transconductor with 75-dB SFDR for
Rail-to-Rail Input Swings,” Antonio J. Lopez-Martin, S Jaime Ramirez-Angulo, Ramon
G. Carvajal, XX Conference on Design
of Circuits and Integrated Systems DCIS 2005, November 18-21, 2005, Lisboa,
Portugal
240.
“New Rail-to-Rail Input Stage With Reduced Supply
Requirements,” Ivan Padilla, Jaime Ramirez-Angulo, Ramon G. Carvajal, Antonio
Lopez-Martin. XX Conference on
Design of Circuits and Integrated Systems DCIS 2005, November 18-21, 2005,
Lisboa, Portugal
.
241.
Jaime Ramirez-Angulo, Milind S. Sawant, Ramon G. Carvajal, Antonio
Lopez-Martin, “MOS Resistor Linearization and Range
Improvement Using Large Resistive Biasing Elements and Capacitive Voltage
Averaging,” XX Conference on Design of
Circuits and Integrated Systems DCIS 2005, November 18-21, 2005, Lisboa,
Portugal
242.
Antonio J. Lopez-Martin, Jaime Ramirez-Angulo, Ramon G. Carvajal, “A
3-V 3-mW CMOS Transconductor with 75-dB SFDR for Rail-to-Rail Input Swings,” XX Conference on Design of Circuits and Integrated Systems
DCIS 2005, November 18-21, 2005, Lisboa,
Portugal .
243.
Francisco Rafael Trejo-Macotela, Alejandro Diaz-Sanchez, Jaime Ramirez-Angulo “Low Voltage Low Noise Amplifier for Radio
Frequency Applications,”, IEEE Midwest Symposium on Circuits and Systems,
Cincinnati, OH August 21-23 2005, pp. 639-642.
244.
Milind Subhash Sawant,
Jaime Ramirez-Angulo, Ramon Carvajal, Antonio Lopez-Martin, “Wide gm
Adjustment Range Highly Linear OTA with Programmable Mirrors” IEEE Midwest
Symposium on Circuits and Systems, Cincinnati, OH August 21-23 2005.
245.
Milind Subhash Sawant,
Jaime Ramirez-Angulo, Ramon Carvajal,
Antonio Lopez-Martin, “New
Compact Implementation of Very High
Performance CMOS Current Mirrors,” IEEE Midwest Symposium on Circuits and
Systems, Cincinnati, OH August 21-23 2005.
246.
Annajirao Garimella,
Lalitha M Kalyani-Garimella, Randy
Romero, Jaime Ramirez-Angulo, Ramon G. Carvajal and Antonio Lopez-Martin
“New Compact and Versatile Wide Tuning Range CMOS Voltage Controlled
Oscillator,” , IEEE Midwest Symposium
on Circuits and Systems, Cincinnati, OH August 21-23 2005.
247.
Ivan Padilla, Jaime Ramirez-Angulo, Ramon Carvajal, Antonio Lopez-Martin and Ramon G. “Low Voltage Rail-to-Rail
Operational Amplifier Based on Flipped Voltage Followers, Carvajal, IEEE
Midwest Symposium on Circuits and Systems, Cincinnati, OH August 21-23
2005.
248.
Lalitha M
Kalyani-Garimella, Annajirao Garimella, Laura I. Escobedo, J. Ramirez-Angulo,
Ramon G. Carvajal and Antonio Lopez-Martin, “Compact Low Voltage VHF Continuous
Time Current Mode FLF Filter,” IEEE
Midwest Symposium on Circuits and Systems, Cincinnati, OH August 21-23
2005.
249.
“Sheetal Gupta, Ivan
Padilla, Jaime Ramirez-Angulo, Antonio Torralba
and Mariano Jimenez,Comparison of Conventional and New Flipped Voltage Follower
Structures,” IEEE Midwest Symposium on Circuits and Systems, Cincinnati,
OH August 21-23 2005
250.
“Low
Voltage VHF Current Modem Continuous
Time Filters using Floating gate
Programmable Currentr Mirrors” Lalitha MK
Garimella, Annajirao Garimella, Laura Escobedo[1], Jaime Ramírez-Angulo 9th-VDAT Symposium, August
10-13 2005, Bangalore India
251.
Milind Subhash Sawant,
Jaime Ramirez-Angulo, Ramon Carvajal,
Antonio Lopez-Martin, “Linear Compact CMOS OTA with Multidecade
Adjustment Range, -62dB IM3, -75dB SFDR, Constant Input Range and Two
Independent Degrees of Freedom for Gain Adjustment,” IEEE International Symposium on Circuits and Systems May 21-24
2006, Kos, Greece.
252.
Jaime Ramirez-Angulo,
Ramon Carvajal, Antonio Lopez-Martin,
and Juan A. Galan, “A free but efficient class AB two-stage operational
amplifier,” IEEE International Symposium
on Circuits and Systems May 21-24 2006,
Kos.
253.
Ivan Padilla, Jaime
Ramirez-Angulo, Ramon Carvajal, and
Antonio Lopez-Martin, “Compact Implementation of Linear Weighted CMOS
Transconductance Adder Based on the Flipped Voltage Follower,” IEEE International Symposium on Circuits and
Systems, May 21-24 2006, Kos,
Greece.
254.
Jaime Ramirez-Angulo, Shetal Gupta, Ramon
Carvajal, and Antonio Lopez-Martin“New
Improved CMOS Class AB Buffers Based on Differential Flipped Voltage Followers,
” IEEE International Symposium on
Circuits and Systems May 21-24 2006, Kos, Greece.
255.
Antonio Lopez-Martin,
Jaime Ramirez-Angulo and Ramon Carvajal,“Rail-to-Rail Tunable CMOS V-I
Converter,” IEEE International Symposium on Circuits and Systems May 21-24
2006, Kos, Greece.
256.
Mariano Jimenez,
Antonio Torralba, Ramon Carvajal, and Jaime Ramirez-Angulo“A New Low-Voltage
CMOS Unity-Gain Buffer,” IEEE
International Symposium on Circuits and Systems May 21-24 2006, Kos,
Greece.
257.
Jaime Ramirez-Angulo,
Milind Subhash Sawant, Ramon Carvajal,
Antonio Lopez-Martin, “New Compact
and Power Efficient Dynamically Biased Cascode Mirrors and Telescopic Op-amps,” IEEE International
Symposium on Circuits and Systems May 21-24 2006, Kos, Greece.
258.
Lucia Acosta, Ramon G. Carvajal and Mariano Jiménez Jaime Ramirez-Angulo, and Antonio Lopez-Martin A CMOS
Transconductor with 90 dB SFDR and Low Sensitivity to Mismatch,” IEEE International Symposium on Circuits
and Systems May 21-24 2006, Kos,
Greece.
259.
L. Kalyani-Garimella, A.Garimella, J. Ramirez-Angulo, R. Carvajal,
A. Lopez-Martin, “Low-Voltage
Universal Cell (LVUC): A Compact Analog/Digital Logic Block for Mixed Signal
FPGAs,” 2006 Custom Integrated Circuits Conference, September 10-13, San Jose, CA
260.
J. Ramirez-Angulo, A. Garimella,
L. M. K.-Garimella, R.G. Carvajal and A.
Lopez-Martin, “Compact Novel Floating Gate Offset Compensation Scheme with Low Sensitivity to Charge Injection, Clock Feedthrough and
Leakage,” 49th Midwest Symposium on Circuits and Systems,
Mayaguez, Puerto Rico, August 6-9, 2006.
261.
J. Ramirez-Angulo, S. R. Sudha Garimella, A.
López Martín, R. G. Carvajal “New Gain Programmable
Current Mirrors Based on Current
Steering,” 49th Midwest
Symposium on Circuits and Systems, Mayaguez, Puerto Rico, August 6-9, 2006.
262.
B. Calvo, S. Celma, M. T. Sanz, J.
Ramirez-Angulo, “A Versatile Low-Voltage CMOS Pseudo-Differential
Transconductor with improved linearity”, 49th
Midwest Symposium on Circuits and Systems, Mayaguez, Puerto Rico, August
6-9, 2006.
263.
E. López-Morillo, R. G. Carvajal, H. Elgimili,
J. Ramirez-Angulo, A. Lopez-Martin and E.
Rodriguez-Villegas, “A Very Low-Power Class AB/AB Op-Amp Based Sigma-Delta
Modulator for Biomedical application,” 49th
Midwest Symposium on Circuits and Systems, Mayaguez, Puerto Rico, August
6-9, 2006.
264.
L.
Kalyani-Garimella, A.Garimella, J. Ramirez-Angulo, R. Carvajal, A. Lopez-Martin,”Low-Voltage Universal Cell
(LVUC): A Compact Analog/Digital Logic Block for Mixed Signal FPGAs,” 2006
IEEE Custom Integrated Circuits Conference, September 10 - 13, 2006, San Jose, California.
265.
B. Calvo, S. Celma, J.
Ramirez-Angulo, M. T. Sanz, “Low-voltage VCM-independent Linearly
Tunable CMOS Balanced Transconductor,” DCIS
2006, Barcelona Spain, November 22-24, 2006.
266.
J. Ramirez-Angulo, A.
J. Lopez-Martin, R. G. Carvajal, “Differential pairs with improved
CMRR, extended common mode input range and reduced supply requirements,”
DCIS 2006, Barcelona Spain, November
22-24, 2006.
267.
A. Lopez-Martin, R. G.
Carvajal, J. Ramirez-Angulo, “Highly Linear CMOS Transconductors
Based on Current Conveyors,” DCIS
2006, Barcelona Spain, November 22-24, 2006.
268.
J. L. Ruiz-Chavira, J.
Ramirez-Angulo, A. Lopez-Martin, R. G. Carvajal, and A. Torralba “Low-Voltage CMOS Amplifier with 4 Bit
Programmable Gain,” DCIS 2006,
Barcelona Spain, November 22-24, 2006.
269.
E. López-Morillo, R. G. Carvajal, Juan A. G. Galán, J. Ramirez-Angulo, A.Lopez-Martin1 and Rodríguez-Villegas, “ A Very Low-Voltage
Low-Power QFG-based Sigma-Delta Modulator for Electroencephalogram
Applications,” 2006 IEEE Biomedical Systems and Circuits Conference, November 29th-Dec
1st, The British Library, London.
270. B. Calvo, S. Celma, M. T. Sanz, J. Ramirez-Angulo, “A High-Linear Low-Voltage CMOS Tunable Transconductor for VHF Filters,” 13th IEEE ICECS 2006, Nice France, December 10-13, 2006.
271.
J.L. Ruiz-Chavira, J. Ramirez-Angulo, A.J.
Lopez-Martin, R.G. Carvajal and A. Torralba, "Low-Voltage CMOS Single
Ended and Fully Differential Amplifier with Programmable Gain" 2007 IEEE International Symposium on
Circuits and Systems, New Orleans, USA, May 27-30, 2007.
272.
J. Ramirez-Angulo, R.
Chintham, R.G. Carvajal and A.J. Lopez-Martin, C."Class AB
Pseudo-Differential CMOS Squarer Circuit"
2007 IEEE International Symposium
on Circuits and Systems, New Orleans, USA, May 27-30, 2007.
273.
R. G. Carvajal A. Torralba and J. Galan, J. Ramirez-Angulo and A. Lopez-Martin, "A Very Linear OTA Using
V/I Conversion Based on Quasi-Floating MOS Transistors" 2007 IEEE International
Symposium on Circuits and Systems, New Orleans, USA, May 27-30, 2007.
274.
I. Padilla, J.
Ramirez-Angulo R. G. Carvajal
and A. Lopez-Martin, "Highly Linear V/I
Converter with Programmable Current Mirrors" 2007 IEEE International Symposium on
Circuits and Systems, New Orleans, USA, May 27-30, 2007.
275.
Paul
Vizcaino,
Jaime Ramirez-Angulo and Umeshkumar Patel ,“Low-Power
CMOS Readout Integrated Circuits with Time Delay Integration for Infrared Focal
Plane Arrays,” Austin Conference
on Integrated Systems & Circuits 2007
Austin, May 13 - 15, 2007.
276.
Annajirao Garimella, Lalitha M. Kalyani-Garimella, Jaime
Ramírez-Angulo, R.G. Carvajal and
A. J. Lopez-Martin “Low-Voltage Universal Capacitive Threshold Logic
Gate and its Application in m-out-of-n
Functions,” 50th IEEE
Midwest Symposium on Circuits and Systems, Aug. 5-8 2007, Montreal, Quebec,
CA.
277.
Jaime
Ramirez-Angulo, Paul Vizcaino,, “New Low-Power Current Memory Circuits,”
50th
IEEE Midwest Symposium on Circuits and Systems, Aug. 5-8 2007, Montreal,
Quebec, CA.
278.
Jaime Ramirez-Angulo, Antonio Lopez-Martin, Annajirao Garimella,
Lalitha M. Kalyani-Garimella, Randy Romero and Low-Voltage, Low-Power
Rail-to-Rail two stage Op-amp with Dynamic Biasing and no Miller compensation, 50th
IEEE Midwest Symposium on Circuits and Systems,
Aug. 5-8, 2007 Montreal, Quebec, CA.
279.
Ramon G. Carvajal, “Versatile
Multidecade CMOS Voltage Controlled Oscillator with Accurate Amplitude and PWM
Control,” 50th IEEE Midwest Symposium on
Circuits and Systems, Aug. 5-8, 2007 Montreal, Quebec, CA.
.
280.
Annajirao
Garimella, Lalitha M. Kalyani-Garimella, Randy Romero and Jaime Ramirez-Angulo,
“Versatile Multidecade CMOS Voltage Controlled Oscillator with Accurate
Amplitude and PWM Control,” 50th
IEEE Midwest Symposium on Circuits and Systems,
Aug. 5-8 2007, Montreal, Quebec, CA.
281.
J.L. Chavira, J. Ramirez-Angulo Nad C.
Brislawn, “Implementation of Accurate Blind Real Time Interference
Suppression,” 50th IEEE Midwest Symposium on
Circuits and Systems, Aug. 5-8 2007, Montreal,
Quebec, CA.
282.
J. Ramirez-Angulo, B. Calvo, R.G. Carvajal, and
A. Lopez-Martin, “Class AB Fully Differential Voltage followers,” IEEE
European Conference on Circuit Theory and Design, Seville, Spain, August
26-30, 2007.
283.
J.
Ramírez-Angulo, A. Garimella, L. M. Kalyani-Garimella M. Sawant, A. Lopez-Martin
and Ramon G. Carvajal, “Low
Voltage Gain Boosting Schemes for One Stage Operational Amplifiers,” IEEE European Conference on Circuit Theory
and Design, Seville, Spain, August 26-30, 2007.
284.
,J.
Ramirez-Angulo, B. Calvo, S. R. S. Garimella, and S. Celma, “New highly-accurate CMOS
source-degenerated based V-I converter
with positive feedback,” ,” IEEE
European Conference on Circuit Theory and Design, Seville, Spain, August
26-30, 2007.
285.
T.
Sánchez-Rodríguez, R. G. Carvajal, S. L. Khemchandani, J. Del Pino, J.
Ramírez-Angulo, A. López-Martín, “Low-Power complex filter for WLAN
applications,” DCIS 2007, November
21-23, 2007 Seville, Spain
286.
A. López-Martín, R. G. Carvajal, J.
Ramírez-Angulo, “Output Current Folding versus Current Mirroring in CMOS Transconductors,”
DCIS 2007, November 21-23, 2007
Seville, Spain
287. C. I. Lujan-Martinez, R. G. Carvajal, A. Torralba, A. López-Martín, J. Ramírez-Angulo, U. Alvarado “A Low-Power Baseband Filter For Zero-IF DVB-T/H Receivers,” DCIS 2007, November 21-23, 2007, Seville, Spain.
288.
Ramirez-Angulo, Jaime;
Kalyani-Garimella, Lalitha Mohana; Garimella, Annajirao; Garimella, Sri Raga
Sudha; Lopez-Martin, Antonio; Carvajal, Ramon Gonzalez, “ An Input Stage for the
Implementation of Low-Voltage Rail to Rail Offset Compensated CMOS Comparators,”
21st International Conference on
VLSI Design 2008,
4-8 Jan. 2008 pp. 294 – 299.
289. A. López-Martin, R. G. Carvajal, E. López-Morillo, L. Acosta, T. Sánchez-Rodriguez, C. Rubia-Marcos, J. Ramírez-Angulo, “Low-Voltage Power Efficient Amplifiers for Emerging Applications, “ AACD 2008 | 17th Workshop on Advances in Analogue Circuit Design. April, 8-10, 2008, Pavia, Italy
290. J. Ramirez-Angulo, C. I. Lujan-Martinez, C.Rubia-Marcos, R.G. Carvajal and A. Lopez-Martin, “Rail to Rail Fully Differential Sample and Hold Based on Clocked Differential Difference Amplifier Using Resistive Local Common Mode Feedback”, Austin Conference on Integrated Circuits, May 7-9 2008.
291. B. Calvo, S. Balasubramanian, J. Ramirez-Angulo, A. J. Lopez-Martin and R.G. Carvajal, “Linear-Enhanced V to I Converters based on MOS Resistive Source Degeneration, 2008 IEEE International Symposium on Circuits and Systems, Seattle Washington, May 21-23, 2008 (accepted for presentation)
292. T. Sanchez-Rodriguez C.I Lujan-Martinez, and R.G.Carvajal, J. Ramirez-Angulo and A.J. Lopez-Martin, “A CMOS Linear Tunable Transconductor For Continuous-Time Tunable Gm-C Filters,” 2008 IEEE International Symposium on Circuits and Systems, Seattle Washington, May 21-23, 2008 (accepted for presentation)
293. J. Ramirez-Angulo, R.G.Carvajal and A. J. Lopez-Martin ,”High slew rate two stage A/AB and AB/AB op-amps with phase lead compensation at output node and local common mode feedback,” 2008, IEEE International Symposium on Circuits and Systems, Seattle Washington, May 21-23, 2008
294. L. Acosta Cabanillas, R.G.Carvajal, J. Ramirez-Angulo,and A. J. Lopez-Martin ,” A simple approach for the implementation of CMOS amplifiers with constant bandwidth independent of gain High slew rate two stage A/AB and AB/AB op-amps with phase lead compensation at output node and local common mode feedback,” 2008 ,IEEE International Symposium on Circuits and Systems, Seattle Washington, May 21-23, 2008
295.
A.Torralba, J.Galán, C. Luján-Martínez and
R.G.Carvajal, J. Ramirez-Angulo and A.J. Lopez-Martin, “Comparison of programmable linear resistors
based on quasi-floating gate MOSFETs, 2008
,IEEE International Symposium on Circuits and Systems, Seattle Washington,
May 21-23, 2008
296.
C.Lujan-Martínez, A. Torralba and R.G.Carvajal,
J. Ramirez-Angulo and A.J. Lopez-Martin, “A -72 dB IM3 CMOS Tunable
Pseudo-Differential Transconductor,” 2008
,IEEE International Symposium on Circuits and Systems, Seattle Washington,
May 21-23, 2008.
297.
S.R.S.
Garimella, J. Ramirez-Angulo, A. Lopez-Martin and R.G. Carvajal, “Design
of Highly Linear Multipliers using Floating Gate Transistors and/or Source
Degeneration Resistor,” 2008, IEEE
International Symposium on Circuits and Systems, Seattle Washington, May
21-23, 2008.
298.
Christian J. B. Fayomi, J. Ramirez-Angulo and Gilson I. Wirth, “Low-Voltage
Flipped Voltage Follower based Fully Differential Sample-and-Hold Circuit,”
2008, IEEE International Symposium on
Circuits and Systems, Seattle Washington, May 21-23, 2008.
299.
S.R.S. Garimella, A. Garimella.; L.M.
Kalyani-Garimella; J. Ramirez-Angulo, “Low depth carry look
ahead circuits using rail-to-rail capacitive threshold logic, “
Midwest Symposium on Circuits and
Systems, 2008. MWSCAS 2008. 51st Midwest Symposium on, 10-13 Aug.
2008 Page(s):574 - 577
300.
Trinidad
Sánchez-Rodríguez, Ramon Gonzalez Carvajal , Antonio Lopez-Martin, Jaime
Ramirez-Angulo, Carlos Rodrigo Rubia-Marcos, “ A CMOS Tunable Transconductor
With Gain Boosting Enhancement With Application in Gm-C Filters,” DCIS 2008, Grenoble, France, November
12-14 2008.
301.
Lucia
Acosta, Antonio Lopez-Martin Ramon G.
Carvajal, Jaime Ramirez-Angulo “Class AB CMOS Transconductor for Channel
Filtering in Zero-IF/Low-IF Wireless Receivers,”, DCIS 2008, Grenoble, France, November 12-14 2008.
302.
Juan A.
Gomez-Galan, Manuel Pedro, Ramon G. Carvajal, Antonio Lopez-Martin, Jaime
Ramirez-Angulo, Clara-Isabel Lujan-Martinez , “A Tunable Low-Voltage
Transconductor with High Linearity, “DCIS
2008, Grenoble, France, November 12-14 2008.
303.
Jaime
Ramirez-Angulo, Clara-Isabel Lujan-Martinez, Carlos Rodrigo Rubia-Marcos, Ramon
G. Carvajal, Antonio Lopez-Martin, “Rail to Rail Fully Differential Track and
Hold Based on Clocked Differential Difference Amplifier Using Resistive Local
Common Mode Feedback, “DCIS 2008,
Grenoble, France, November 12-14 2008.
304.
Antonio
Lopez-Martin (Public University of Navarra), Jaime Ramirez-Angulo, Ramon G.
Carvajal, Lucia Acosta , “CMOS Class AB Super Source Follower,” DCIS 2008, Grenoble, France, November
12-14 2008.
305.
Antonio
Lopez-Martin, Jaime Ramirez-Angulo, Ramon G. Carvajal., “Micropower High-Drive
CMOS Current Feedback Operational Amplifier,” DCIS 2008, Grenoble, France, November 12-14 2008.
306.
Juan
Antonio Gomez Galan , Antonio Lopez-Martin, Jaime Ramirez-Angulo, , “DC Offset
Control Circuit with Application in a Zero-IF 0.18 um CMOS Bluetooth Receiver Chain,”
Trinidad Sánchez-Rodríguez , Ramon Gonzalez Carvajal, DCIS 2008 Grenoble, France, November 12-14 2008.
A DC offset correction circuit with application in a Zero-IFversity)
7. FUNDING
Principal Co-investigator (with Chuck Creuseure and Jo Lakey) Interference Suppression via an Analog–Digital
Adaptive Microsystem (ADAM), DARPA
Microsystems Technology Office (MTO), May 2006-May 2007, $206,000
Principal Co-investigator of the Project "Characterization of Silicon‑Chrome on MOS" Texas Instruments (TI), Texas A&M University,(1985:$55,000, 1986:$22,000, 1987,1988, 1989,1990: $37,000 each year.
Principal Investigator of the Project "Modeling of Parasitic Resistances and Capacitances in Bipolar Transistors", Texas Instruments (TI), Texas A&M University,($42,000 April 1989 ‑ March 1990)
Principal Investigator (with J. Beasley and S. Castillo) of proposal:"Improvement of VLSI Systems at New Mexico State University, AT&T Foundation, $10,000, October 1991
Principal Investigator of Project "Real Time Solution of Laplace Equation With Analog VLSI Circuits", National Science Foundation, $60,000, September 1991- August 1993.
Principal Investigator of project, "IDDQ Testing of CMOS VLSI circuits using built in sensors with multiple emitter lateral bipolar transistors", SANDIA National Laboratories, $30,000, NMSU # 92948, October 1992- September 1993.
Principal Investigator of project, "CISE Research instrumentation for Microelectronics," National Science Foundation, $99,520, August 1993- July 1995, NSF proposal CDA-9222883.
Principal Investigator of "Memo of Understanding between NMSU and the Universidad Autonoma Metropolitana, Mexico" NMSU # 92689, February 28,92.
Principal Investigator of following undergraduate research projects currently funded by CIMD-NSF (Comission to Increase Minority Degrees- National Science Foundation):
"Development of VLSI-oriented experiments", "Development of a PC software tool to characterize laser trimmed film resistors," and "Design of an instrument to generate multiple current sources for testing of ICs," $4014, NMSU # 92676, Spring 1992
"Design and Fabrication of Bipolar and MOS transistor arrays" and "Design of test fixtures for characterization of integrated Circuits," $2676, NMSU # 92960, Summer 1992
"Development and fabrication of CMOS analog multipliers for low-power supply requirements," $1938, NMSU # 93100, Fall 1992
"Development of a prototype to measure distance using ultrasonic transceivers," and "Design and Fabrication of integrated CMOS wideband amplifiers, $2676, NMSU # 93271, and 93272, Spring 1993
"Circuit Design for High Speed fuzzy Processors," S95UR029 and Design of Integrated Current Sensors for IDDQ Testing of VLSI Systems, S95UR039: $1512
"Design of High Frequency BCMOS buffers," S96UR032, "Design Implementation and Characterization of an Electronically Programmable Universal Filter, S96UR033, " Design of Low-Voltage, Low Power Operational Amplifiers using Multiple Input Floating Gate Transistors" S96UR034, "Prototyping Analog Defuzzifiers Using Operational Transconductance Amplifers" V96UR026 total: $7,024, Spring and Summer 1996:
Principal Investigator of proposal: "Supplemental Supercomputer time for VLSI microelectronics", NSF Supercomputing center proposal # MIP930001N, submitted Nov 1, 1992
Principal investigator of: "Development of a PC interface and software for IDDQ current sensors", SANDIA National Labs, amount awarded: $35,000, performance period: September 1993- August 1994
Principal Investigator of "Built In Test Techniques for Mixed-Mode VLSI Circuits", National Science Foundation, amount awarded: $100,000, August 1997- July 2000.
Principal Investigator of "Static and Dynamic current sensors for Test of Mixed-Mode VLSI Circuits", Engineering Foundation, amount awarded: $25,000, performance period: October 1997- September 1998.
Research at Oak Ridge National Labs, Monolithic Systems Group, Instrumentation and Control Division, 6 weeks in Summer 1997. This was funded through ORISE Faculty Research Participation program.
Sabbatical research June 98-98 at Electronics Department of University of Seville in Spain
Principal Investigator: Equipment gift certificate 011FY00, $111,500Agilent University Grants Program to establish a new RF-VLSI laboratory, February 23, 2000
Principal Investigator: Design and Fabrication of a VLSI analog neural network for bit error rate estimation, $15,000, Air Force (subcontract trough New Mexico Highlands University), August 99-July 2000
Principal Investigator of "VLSI hardware implementation of Real Time Neuro-fuzzy processors with on chip learning, NASA/ACE ($48,000 subcontract trough New Mexico Highlands University), August 1999-Augsut 2000
Design of Mixed Signal Systems, Gift grant from Texas Instruments Inc., $150,000, August 2000-2003
Design of Low Voltage-Low power VLSI analog building blocks for aerospace and soft computing applications, NASA Center for Autonomous Control Engineering (subcontract trough
University of New Mexico) , $250,000 August 2000-August 2004.
8. GRADUATE STUDENTS
Currently advising
Ph.D.: Annajirao Garimella,
Jose Luis Ruiz Padilla
M.Sc.: Sri
Raga Sudha Garimella, Carlos Urquidi,
Javier Hernandez, Bindu
Gummadi, Dimple Chiirumamilla, Paul
Vizcaino, Sandhana Balasubramanian,
Carlos Vazquez Goyarzu, Salvador Almanza, Roopa Mishra.
9. INVITED PRESENTATIONS
Presentations on Statistical Circuit Design.
- IIMAS-UNAM, Mexico, September 30,
1982