PUBLICATIONS

1a. Peer reviewed journal papers

[1] The design, fabrication and test of a new VLSI hybrid analog digital neural processing element," M. DeYong, R. Finley and C. Fields, IEEE Transactions on Neural Networks, vol. 3, No. 3, pp. 363 374, 1992

[2] "Computational capabilities of biologically realistic analog processing elements," C. fields, M. DeYongh and R. Findley, VLSI for Artificial Intelligence and Neural Networks, pp. 174 184, New York, Plenum Press, 1991

[3] "Temporal Processing with high speed hybrid analog digital neural networks," M. DeYong, T. Eskridge and C. Fields, J. of Analog Integrated Circuits and Signal Processign, special issue on Analog VLSI Neural Networks, in press

[4] "Properties of optimality in neural Networks," to appear as a chapter in the Metroplex Institute for Neural Dynamics Workshop on optimallity in Biological and Artificial Networks, Dallas TX, in press, 1993

[5] "Active Compensation of Operational Transconductance Amplifier Filters Using Partial Positive Feedback", J. Ramírez Angulo, and E. Sanchez Sinencio, IEEE Journal of Solid State Circuits, vol. SC 25, No. 4, pp. 1024 1028, August 1990.

[6] "Extended Transconductance Adjustment/linearisation Technique", W. J. Adams and J. Ramírez Angulo, Electronics Letters, vol. 27, No. 10, pp. 842 844, May 1991.

[7] "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.

[8] "Current Mode Continuous Time Filters: Two Design Approaches", J. Ramírez Angulo, E. Sanchez Sinencio and M. Robinson, IEEE Transactions on Circuits and Systems, vol. 39, No. 6, June 1992, pp. 337 341.

[9] "Digitally Tunable MOS Current Mirrors for High Precision Applications", J. Ramírez Angulo, IEE Proceedings Part G, vol. 140, No. 3, May 1993.

[10] "Improvement of Laser Trimmed Film Resistor Stability by Selection of Optimal Trim Paths", J. Ramírez Angulo, R. Wang and R. Geiger, IEEE Journal of Solid State Circuits, accepted for publication.

[11] "A High Frequency Low Voltage CMOS diode", J. Ramírez Angulo, Electronics Letters, Vol. 28, No. 3, pp. 299 301, January 1992.

[12] " A low voltage vertical BiCMOS OTA", J. Ramírez Angulo, IEE proceedings Part G, Vol. 139, No. 4, August 1992, pp. 553 556

[13] "Programmable BiCMOS Transconductor for C TA filters", J. Ramírez Angulo and E. Sanchez Sinencio, Electronics Letters, vol. 28, No. 13, June 4th 1992, pp. 1185 1187.

[14] "OTA C Filter Silicon Compiler", M.R.Kobe, E. Sanchez Sinencio and J. Ramírez Angulo, Analog Integrated Circuits and Signal Processing, pp. 83 98, May 1993.

[15] "Highly Linear Four Quadrant BiCMOS Analogue Multiplier", Jaime Ramírez Angulo, Electronics Letters, vol. 28, No. 19, September 10th 1992, pp. 1783 178.

[16] "A BICMOS current buffer rectifier," Jaime Ramírez Angulo, IEEE Transactions on Circuits and Systems, vol. 39, No. 10, Oct. 92

[17] "Design of a Monte Carlo Chip in two Micron CMOS technology," J. Beasley, R. Cameron and J. Gleason, NASA Tech Briefs, NPO18507, accepted for publication

[18] "A Compact Current controlled CMOS Waveform Generator," J. Ramírez Angulo, IEEE Transactions on Circuits and Systems, vol. 39, pp. No 12, Dec. 1992.

[19] "A Current mode Cellular Neural Network Implementation," J. Varrientos, E. Sanchez Sinecio and J. Ramirez Angulo, IEEE Transactions on Circuits and Systems, vol. 40, No 3, pp. 147 155, March 1993

[20] "A Circuit Design Approach with emphasis on Group Delay Approximation", J. Ramirez Angulo and E. Sanchez Sinencio, IEEE transactions on circuits and Systems, accepted for publication

[21] A BiCMOS Low Distortion Tunable Transconductor for Continuous Time Filters", M. Ali, M. Howe, E. Sanchez Sinencio and J. Ramirez Angulo IEEE Transactions on Circuits and Systems, Vol. 40, No. 1, January 1993

[22] "High Selectivity, High Frequency Continuous Time Filters Using Multiple Output OTAs", Jaime Ramirez Angulo and E. Sanchez Sinencio, IEEE Transactions on Circuits and Systems, Vol. 41, No. 7 September 1994.

[23] "Integrated Circuit Pseudo Random Generator,"J.E. Steelman, J. Beasley, M. Aragon, F. Ramirez, K. Summers and A. Knoebel, NASA Technical Briefs, November 1992.

[24] "A Simple Master Slave Scheme for tuning Transconductors with High Accuracy," J. Ramirtez Angulo, IEEE Transactions on Instrumentation, accepted for publication

[25] "All Pass circuit, J. Ramirez Angulo, McGraw Hill Enciclopedia for Science and Technology, 7th Edition, vol. 1, pp. 387 388, McGraw Hill, New York 1992

[26] "High frequency compensated current mode ladder filters using multiple output OTAs, IEEE Transactions on Circuits and Systems, Vol. 41, No. 7 September 1994 (in print)

[27] "A compact BiCMOS circuit for analog VLSI fuzzy control systems," J. Ramirez Angulo, IEEE Journal of Solid State Circuits, accepted for publication

[28] "IDDQ impulse response based test: A unified approach for the test of analog and digital VLSI circuits," J. Beasley, H. Ramamurthy, M. DeYong and J. Ramírez Angulo, IEE Electronics Letters, vol. 29, No. 14, pp. 2101 2103, Nov. 1993

[29] "Low distortion, BiCMOS current mode high frequency oscillator", J. Ramírez Angulo and E. Sanchez Sinencio, for IEEE Transactions on Circuits and Systems, accepted for publication.

[30] "Wide Range Programmable Class AB Current Mirrors for Low Supply Operation", IEEE Transactions on Circuits and Systems, Vol. 41, No. 7 September 1994 (in print).

[31] "Building Blocks for Fuzzy Processors," Jaime Ramirez Angulo, Analog Action Column, IEEE Circuits and Devices Magazine, pp. 48 50, July 1994

[32] "A CMOS Combinational Circuit Design Method Using Mixed Logic Concepts", W. B. Hudson and J. S. Beasley, IEEE Transactions on Education.

[33] "A Cost Effective solution for Integrating Computer Hardware in the Laboratory, J.S. Beasley and W.B Hudson, ASE Computers in Education Journal Spring 1993

[34] "A BiCMOS Comparator for charge Threshold detection," A. de Luca, G. Gonzalez Altamirano and J. Ramirez Angulo, IEE Proccedings part G., accepted for publication.

[35] "Low Voltage Analog BiCMOS Building blocks," J. Ramirez Angulo, Chapter for IEEE Press book on Low Voltage Low Power Circuits and Systems, to be published in 1996

[36] "Frequency Transformations," CRC Circuits and Filters Handbook, chapter 67, pp. 2192 2204, 1995.

[37] "Low Voltage OTA architectures Using Multiple Input Floating gate Transistors," J. Ramirez Angulo, S.C. Choi, G. Gonzalez Altamirano, IEEE Transactions on Circuits and Systems, vol. 42, No. 12, pp.971 974, November 1995.

[38] "Wide Range gain Programmable Class AB Linear Current Mirrors for low supply operation J. Ramirez Angulo IEEE Transactions on Circuits and Systems II Analgo and Digital Signa Processing vol. 41(#9) pp. 631 634 Sep. 1994

[39] "OTA:GS filters: the new face of RC active filters", J. Ramirez Angulo and G. Gonzalez Revista Mexicana de Fisica, vol. 42, No. 3 pp. 459 466, July 1996.

[40] "Charge Mode Defuzzifiers using multiple input floating gate transistors," J, Ramirez 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

[41] "Low Voltage High Frequency Continuous time Filters Based on Simple Transconductors and Miller Integrators", J. Ramirez Angulo, Journal of Analog Integrated Circuits and Signal Processing, pp. 295 301, May 1997.

[43] "On fault probabilities and yield models for VLSI neural networks", P.M. Furth and A.G. Andreou, Journal of Solid State Circuits, vol. 32, No. 8, pp.1284 1287, August, 1997. 2."A design framework for low power analog filter banks", P.M. Furth and A.G. Andreou, IEEE Circuits and Systems I, vol. 42, No. 11, pp. 967 971, November, 1995. 3."Linearised differential transconductors in subthreshold CMOS", P.M. Furth and A.G. Andreou, Electronics Letters, vol. 31, No. 7, pp.545 547, March, 1995.

[44] "A subthreshold CMOS continuous time bandpass filter with large signal stability", P.M. Furth, Analog Integrated Circuits and Signal Processing, special issue of 40th Midwest Symposium on Circuits and Systems.

[45] "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 18^th, 1999, pp. 263-264

[46] A CMOS four quadrant Current/Transconductance multiplier,@ A. Diaz-Sánchez, J. Ramírez-Angulo, E. Sánchez-Sinencio and Gubhee Han, Analog Integrated Circuits and Signal Processing, vol. 19, No. 2, May 1999, pp. 163-168.

[47] "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, in print.

[48] "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.

[49] "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.

Journal papers accepted for publication

[50] "Low voltage high performance CMOS current mirror with input output voltage requirements of approximately a transistor's overdrive voltage ", J. Ramirez Angulo, R. G. Carvajal , A. Torralba,". IEEE Transactions on Circuits and Systens II

[51] "A BiCMOS Universal Membership Function Circuit," J. Ramirez Angulo, IEEE Transactions on Circuits and Systems., accepted for publication.

[52] A Low Voltage Four Quadrant Analog CMOS Multiplier," J. Ramirez Angulo, Instrumentation and Development

[53] "A Novel Sample Data Adaptive Filter," A. Diaz Sanchez and J. Ramirez Angulo, IEEE Transactions on Circuits and Systems.

Journal papers currently under review

A VLSI Hardware Algorithm for Computing Object Centers," D. Ma, E. Johnson, J. Ramirez Angulo and A. de Luca, IEEE Journal of Solid State Circuits, under review

"Low voltage CMOS amplifiers with wide input output swing based on a novel scheme," J. Ramirez Angulo, A Torralba, R.G. Carvajal and J.Tombs, IEEE Transactions on Circuits and Systems I, under review

"A CMOS op amp for a single supply close to a threshold voltage and with almost rail to rail swing," J. Ramirez Angulo, A Torralba, R.G. Carvajal and J.Tombs, IEEE Transactions on Circuits and Systems II, under review

"Two approaches for low voltage op amp operation with large signal swing," J. Ramirez Angulo, A Torralba, R.G. Carvajal and J.Tombs, IEEE Transactions on Circuits and Systems

Integration of Multiple input floating gate transistors into a top down CAD design flow, J. toms, J. Ramirez Angulo, A Torralba, R.G. Carvajal,IEEE Circuits and Devices Magazine, under review

Book chapters

[1] "Frequency and Impedance Transformations", J. Ramirez 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, pp. 218-219..

[4] "An information theoretic framework for comparing the bit energy of signal representations at the circuit level", A.G. Andreou and P.M. Furth, in Low Voltage Low Power Integrated Circuits and Systems, ed. E. Sanchez Sinencio, IEEE Press. 2."Integrating circuits", P.M. Furth and A.G. Andreou, in Wiley Encyclopedia of Electrical Engineering, ed. J.G. Webster, Wiley.

2a. Conference papers

[1] "Distributed RC Filters With Linearized MOS Transistors in MOS Technology'', B. Linares Barranco, E. Seaberg and J. Ramirez Angulo, IEEE 1990 International Symposium on Circuits and Systems, New Orleans, Louisiana, pp. May 1 3 1990, pp. 2385 2388.

[2] "A Precision Broadband Voltage Rectifier in CMOS Technology", J. Ramirez Angulo, IEEE 1990 International Symposium on Circuits and Systems, New Orleans, Louisiana, May 1 3 1990, pp. 1724 1727.

[3] "Maximum Value of the Base Resistance of Vertical Bipolar Transistors", B. Linares Barranco, E. Seaberg and J. Ramirez Angulo, IEEE 1990 International Symposium on Circuits and Systems, New Orleans, Louisiana, May 1 3 1990, pp. 3182 3185.

[4] "Analog Neural Networks for Real Time Constrained Optimization", A. Rodriguez Vazquez, R. Dominguez Castro, J.L.Huertas, E.Sanchez Sinencio, B.Linares Barranco and J. Ramirez Angulo, IEEE 1990 International Symposium on Circuits and Systems, New Orleans, Louisiana, May 1 3 1990, pp. 1867 1870.

[5] "FIESTAII: A PC  Filter Educational Synthesis Teaching Aid", J. Ramirez Angulo, M. Kobe and E.Sanchez Sinencio, 33rd  Midwest Symposium on Circuits and Systems, Calgary, Canada, August 12 14 1990, pp. 504 507.

[6] "A Current Mode CMOS Cellular Neural Network", J. Varrientos, J. Ramirez Angulo and E.Sanchez Sinencio, 33rd  Midwest Symposium on Circuits and Systems, Calgary, Canada, August 12 14 1990, pp. 277 280.

[7] "A Program for the Design of Continuous Time Filters", J. Ramirez Angulo, M.R. Kobe, E. Sanchez Sinencio, IEEE Latincon 90, Mont. Mexico, Oct 1 4, 1990, vol.I, pp. 1 4.

[8] "Cellular Neural Networks Implementation: A Current Mode Approach", J.E.Varrientos, J.Ramirez Angulo and E.Sanchez Sinencio, IEEE International Workshop on Cellular Neural Networks and their Applications, pp. 216 220, Budapest Hungary December 16 19, 1990.

[9] "Current Mode Continuous Time Filters: Two Design Approaches", M. E. Robinson, J. Ramirez Angulo and E. Sanchez Sinencio, 34th Midwest Symposium on Circuits and Systems, Monterey, California, May 14 17, 1991.

[10] "OTA Extended Adjustment Range and Linearization Via Programmable Current Mirrors", W. J. Adams and J. Ramirez Angulo, 34th Midwest Symposium on Circuits and Systems, Monterey, California, May 14 17, 1991.

[11] "High Selectivity, High Frequency Continuous Time Filters Using Multiple Output OTAs", Jaime Ramirez Angulo, E. Sanchez Sinencio and Matthew Howe, 1991 IEEE International Symposium on Circuits and Systems, pp. 1351 1354 Singapore, June 11 14, 1991.

[12] "Improvement of Laser Trimmed Film Resistor Stability by Selection of Optimal Trim Paths", J. Ramirez Angulo, R. Wang and Randall L. Geiger, 1991 IEEE International Symposium on Circuits and Systems, pp. 2188 2191, Singapore, June 11 14 1991.

[13] "OTA Extended gm Adjustment Range Via Electronically Programmable Current Mirrors", W. J. Adams and J. Ramirez Angulo, 1991 IEEE International Symposium on Circuits and Systems, pp. 2553 2556, Singapore, June 11 14 1991.

[14] "Circuit implementations of Extended Transconductance Linearization Technique", W.J. Adams and J. Ramirez Angulo, 1991 European Conference on Circuit Theory and Design, September 2 6, 1991, Copenhagen, Denmark.

[15] "Wide gm Adjustment Range, Highly Linear OTA with Linear Programmable Current Mirrors," J. Ramirez Angulo and I. Grau, Proceedings of 1992 IEEE International Conference on Circuits and Systems, pp. 1372 1375, San Diego CA, May 10 13 1992.

[16] "Applications of Composite BICMOS Transitors in Analog Circuits," J. Ramirez 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.

[17] "Architechtures for Analog VLSI implementation of Neural Networks for Solving Linear Equations with Inequality Constraints," A. Cichocki, J. Ramirez Angulo and R. Unbehauen, Proc.1992 IEEE International Conference on Circuits and Systems, pp. 1529 1532, San Diego CA, May 10 13 1992.

[18] "A Piecewise Linear Function Approximation using Current Mode Circuits," J. Ramirez Angulo, E. Sanchez 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.

[19] "The folded Gibert Cell: A low voltage, high performance CMOS multiplier", J. Ramirez Angulo and Sun Ming Chen, 35th Midwest Symposium on Circuits and Systems, August 9 12, pp. 20 23, 1992 Washington, D.C.

[20] "Modules for a digitally controlled analog signal processor with highly reconfigurable architecture", J. Ramirez Angulo, R. Paz and R. Parra, 35th Midwest Symposium on Circuits and Systems, August 9 12, 1992 pp. 458 461, Washington, D.C.

[21] "A hybrid OTA with very wide adjustement range", M. DeYong and J. Ramirez Angulo, 35th Midwest Symposium on Circuits and Systems, August 9 12, 1992 pp. 953 956, Washington, D.C.

[22] "CMOS cells for analog VLSI Laplace equation solver based on the resistive analogy method", J. Ramirez Angulo, M. DeYong and Sun Ming Chen, 35th Midwest Symposium on Circuits and Systems, August 9 12, 1992 pp. 597 600, Washington, D.C.

[23] "A BiCMOS Low Distortion Tunable Transconductor for Continuous Time Filters", M. Ali, M. Howe, E. Sanchez Sinencio and J. Ramirez Angulo 35th Midwest Symposium on Circuits and Systems, August 9 12, 1992 pp. 579 582, Washington, D.C.

[24] "A BiCMOS current buffer rectifier", M. Ali, M. Howe, E. Sanchez Sinecio and J. Ramirez Angulo 35th Midwest Symposium on Circuits and Systems, August 9 12, 1992 pp. 957 959, Washington, D.C.

[25] "VLSI Design Experiences at New Mexico State University," J. Steelman, J. Beasley and E. Olson, Proceedings Region 5 IEEE Conference

[26] "High speed analog computation via VLSI implementable neural networks," R. Findley, M. DeYong and C. Fields, Proc. of the third Microlelctronic Education Conference and Exposition, San Jose, CA, pp. 113 123, 1990

[26] "Computing with fast modulation: experiments with biologically realitic model neurons," M. DeYong, R. Findley and C. Fields, Proc. Fifth Rocky Mountain Conf. on AI, Las Cruces, NM, pp. 111 116, 1990

[27] "Applications of Hybrid analog digital neural networks in signal processing, M. DeYong and C. Fields, IEEE International Conference on Circuits and Systems, San Diego, CA, pp. 2212 2215, May 1992

[28] "M. DeYong, T. Eskridge and A. Palmer, "Complex and Emergent Behavior from neural network pulse stream filters," Proc. 35th Midwest Symposium on Circuits and Systems, pp. 1183 1186, August 8 10, 1992 Washington, D.C..

[29] M. DeYong, T. Eskridge and A. Palmer, "A coupled grid neural network retina for real time visual processing," Proc. 35th Midwest Symposium on Circuits and Systems, August 8 10, 1992 Washington, D.C. pp. 1179 1182.

[30] "A second generation Linear low voltage BiCMOS OTA," J. Ramírez Angulo and K. H. Treece, 1993 IEEE International Symposium on Circuits and Systems, pp. 1172 1175, May 1993

[31] "Compensated current mode filters using multiple output OTAs," J. Ramírez Angulo and E. Sanchez Sinencio, 1993 IEEE International Conference on Circuits and Systems, Chicago, May 3 6, pp. 1412 1415, May 1993

[32] "Low voltage programmable analog FIR Filters using voltage followers and multipliers," J. Ramírez Angulo and A. Diaz Sanchez, 1993 IEEE International Conference on Circuits and Systems, Chicago, May 3 6, pp. 1408 1411, May 1993

[33] "Linearity accuracy and bandwidth Considerations in wideband CMOS voltage amplifiers," J. Ramírez Angulo, R. Sadkowski and E. Sanchez Sinencio, 1993 IEEE International Conference on Circuits and Systems, Chicago Il., May 3 6, pp. 1251 1254, May 1993

[34] "Novel Digitally trimmable MOS current mirrors," J. Ramírez Angulo, 1993 IEEE International Conference on Circuits and Systems, pp. 974 977, Chicago Il., May 3 6, May 1993

[35] "A master slave scheme for tuning the gain of transconductance amplifiers with high absolute accuracy," J. Ramírez Angulo, 1993 IEEE International Conference on Circuits and Systems, Chicago Il., May 3 6, pp. 1176 1179, May 1993

[36] "Highly Linear 4 quadrant BiCMOS analog multiplier," J. Ramirez Angulo, IEEE International Symposium on Circuits and Systems, Chicago Il., May 3 6, pp. 1467 1470, 1993

[37] "Fault detection in digital and analog circuits using an IDD temporal analysis technique," J. Beasley, D. Magallanes, A. Vridhagiri, H. Ramamurthy and M. Deyong, Fifth NASA Symposium on VLSI Design, Albuquerque, NM Novemeber 1993.

[38] "An iDD temporal Analysis Technique for Fault Detection Usign a Biologically Realistic Axon Hillock Model," D. Magallanes, J. Beasley, H. Ramamurthy and M. DeYong, "National Science Foundation Conference on Diversity in the Scientific and Technological Workforce, Washington D.C., October 1993.

[39] "IDD spectrum and temporal analysis test techniques for VLSI circuits," J. Beasley, H. Ramamurthi, M. DeYong and J. Ramirez Angulo, Proceedings of the 1993 European Conference on Circuit Theory and Design, pp. 659 664, Davos, Switzerland, August 30   September 3, 1993.

[40] "BiCMOS High Frequency Linear Bandpass Based Current mode Oscillator for 3V supply Oscillator", J. Ramírez Angulo and E. Sanchez Sinencio, Proceedings of the 1993 European Conference on Circuit Theory and Design (ECCTD'93), pp. 1119 1132, Davos, Switzerland, August 30   September 3, 1993.

[41] "IDD Pulse Response Testing of Analog and Digital Circuits," J. S. Beasley, H. Ramamurthy, J. Ramirez Angulo and M. Deyong, 1993 International Test Conference, pp. 626 634, October 17 21, 1993.

[42] "Use of MOSIS custom designed CMOS and BiCMOS transistor Arrays for teaching VLSI courses", J. Ramirez Angulo and J. Beasley, 36th Midwest Symposium on Circuits and Systems, pp. 1176 1179, Detroit Mi, August 16 18, 1993.

[43] "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. Ramirez Angulo, 36th Midwest Symposium on Circuits and Systems, Detroit Mi, August 16 18, 1993.

[44] "Continuous Time High Frequency Programmable Nonrecursive Filters," J. Ramirez Angulo, A. de Luca, and H. Perez Meana, 36th Midwest Symposium on Circuits and Systems, pp. 153 156, Detroit Mi, August 16 18, 1993.

[45] "A Parallel Form Decision Feedback Equalizer," H. Perez Meana, A. de Luca and J. Ramirez Angulo, 36th Midwest Symposium on Circuits and Systems, pp. 1215 1218, Detroit Mi, August 16 18, 1993.

[46] "Low Voltage BiCMOS Membership Function Circuit Building Block for Analog VLSI Fuzzy Control Implementation," J. Ramirez Angulo, S. Badruzzamman and J. Coronado, IFIS 93: Industrial Fuzzy Control and Intelligent Systems, pp. 240 242, December 1 3, 1993, Houston, TX.

[47] "Two approaches for VLSI current mode filters based on canonical control structures," J. Ramírez Angulo and E. Sanchez Sinencio, IEEE International Symposium on Circuits and Systems, pp. 669 672, London, England, May 30  June 2, 1994

[48] "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

[49] "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

[50] "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

[51] "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

[52] "Novel linear gain programmable Class AB current mirrors with constant bandwidth", J. Ramirez Angulo, 1994 IEEE International Symposium on Circuits and Systems, pp. 545  548, London, England, May 30  June 2, 1994

[53] "A Programmable 1.8 18MHz, High Q Fully Differential Continuous Time Filter with 1.5V 2V Power supply," J.T. Nabitch, E. Sanchez Sinencio and J. Ramírez Angulo, 1994 IEEE International Symposium on Circuits and Systems, pp. 653  657, London, England, May 30  June 2, 1994

[54] " A Low Voltage BiCMOS Comparator for Charge Threshold Detection," A. De Luca, G. Gonzalez Altamirano, J. Ramirez Angulo and F. Perez Ramirez, 37th Midwest Symposium on Circuits and Systems, Lafayette, Lousiana, August 2 5 1994.

[55] "Current Mirrors with Low Input and Output Voltage Requirements," J. Ramirez Angulo and F. Perez Ramirez, 37th Midwest Symposium on Circuits and Systems, Lafayette, Lousiana, August 2 5 1994.

[56] "Low Voltage Current Mode Min and Max Circuit Building Blocks for analog CMOS Fuzzy Processors," Jaime Ramirez Angulo, 3rd International Conference on Fuzzy Logic, Neural Nets and Soft Computing, August 1 7 1994, Lizuka, Japan

[57] "A Computer Interface That Expands to Meet the Needs of Students," W.B. Hudson and J. S. Beasley, 1994 ASEE Anual Conference Proceedings, pp. 900 907

[58] "Low Voltage Currrent 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.

[59] "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. Ramirez Angulo, Proceedings of International Symposium on Information Theory and Applications, Sydney Australia, 20 24 November 1994, pp. 1351 1355.

[60] "Design of VLSI Systems at New Mexico State University," J. Ramirez Angulo, SACNAS Conference, January 5 9 1995, El Paso, TX.

[61] "A BiCMOS Universal Membership Function Circuit," J. Ramirez Angulo, 1995 IEEE International Symposium on Circuits and Systems, Seattle, WA, April 30, May 3, 1994, pp.275 278

[62] "Current Mode and Voltage Mode VLSI Fuzzy Processor Architectures," J. Ramirez 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.

[63] "Yet another low voltage four quadrant CMOS multiplier," J. Ramirez Angulo, 38th Midwest Symposium on Circuits and Systems, pp. 405 408, Rio de Janeiro , Brazil, August 13 16, 1995.

[64] "OTA GS filters: The new Face of RC active filters," J. Ramirez Angulo,and G. Gonzalez Altamirano, 38th Midwest Symposium on Circuits and Systems, pp. 1329 1332, Rio de Janeiro, Brazil, August 13 16, 1995.

[65] "Low Supply Voltage OTA architectures Using Floating Gate Transistors, S.C. Choi, and J. Ramirez Angulo, 38th Midwest Symposium on Circuits and Systems, pp. 158 161, Rio de Janeiro, Brazil, August 13 16, 1995.

[66] "Building Blocks of Filter Tuning System Using Analog VLSI Fuzzy Logic Controller," S.C. Choi, E. Sanchez Sinencio and J. Ramirez Angulo, 38th Midwest Symposium on Circuits and Systems, pp. 389 392, Rio de Janeiro , Brazil, August 13 16, 1995.

[67] "Analog VLSI Implementation of a New Algorithm for Solving Generalized Systems of Linear Equations," N.C. Carneiro, L. Caloba and J. Ramirez Angulo, 38th Midwest Symposium on Circuits and Systems, pp. 965 968, Rio de Janeiro , Brazil, August 13 16, 1995.

[68] "A new Algorithm for Analog Matrix Inversion," N.C. Carneiro, L. Caloba and J. Ramirez Angulo, 38th Midwest Symposium on Circuits and Systems, pp. 401 404, Rio de Janeiro , Brazil, August 13 16, 1995.

[69] "An idd Transient Analysis Technique for Defect Detection in Digital Integrated Circuits," J. Beasley, J. Ramirez Angulo and R. Steiner, 38th Midwest Symposium on Circuits and Systems, pp. 286 289, Rio de Janeiro Brazil, August 13 16, 1995.

[70] "Comparative study of publications of Mexico listed in Science Citation Index,"(in spanish), J. Ramirez Angulo, VI Annual Meeting of the Researchers of the state of Chihuahua, Chihuahua City, Mexico, December 1 3 ,1995

[71] "Continuous Time Adaptive Filter Structure," L. Ortiz Balbuena, A. Martinez Gonzalez, H.Perez Meana, L. Nino de Rivera and J. Ramirez Angulo, IEEE ICASP International Conference on Acoustics, Speech and Signal Processing, pp. 1061 1064, Detroit, Mi. May 1995.

[72] "Sistemas Analogicos VLSI," J. Ramirez Angulo, Electro 85, (Plenary Talk), 23 27 Octubre 1995

[73] "Implementation of VLSI analog adaptive filters," A. Diaz Sanchez and J. Ramirez Angulo, Proceedings of IEEE Conielecomp, Puebla, Mexico, February 28 March 1, 1996

[74] "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.

[75] "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

[76] "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.

[77] "Analog VLSI Fuzzy Processor Architectures Based on Multiple input Floating Gate Transistors," J. Ramirez Angulo, V. Quintana, S.C.Choi, Proc. of 1996 World Automation Congress, Montpellier, France, May 27 30, 1996, pp. 539 544.

[77] "Design and implementation of VLSI Voltage Mode Adaptive filters," A. Diaz Sanchez and J. Ramirez Angulo, 1996, Midwest Symposium on Circuits and Systems,Ames Iowa, August 11 13, 1996

[78] "A novel Slew Rate Enhancement Technique for One Stage Operational Amplifiers," J. Ramirez Angulo, Midwest Symposium on Circuits and Systems, Ames Iowa, Aug. 11 13 1996

[79] "High Speed Digital VLSI Fuzzifier," J. Ramirez Angulo, J. Zrilic, G. Escarpita and A. Beltran, Midwest Symposium on Circuits and Systems, August 11 13, Ames Iowa

[80] "A Compact High Frequency Differential Analog Adder," A. Diaz Sanchez and J. Ramirez Angulo, Midwest Symposium on Circuits and Systems, Ames Iowa, August 11 13 1996

[81] "Ultracompact Low voltage Analog CMOS Multiplier Using Multiple Input Floating Gate Transistors, J. Ramirez Angulo, 1996 European Solid State Circuits Conference, Montpelier, France.

[82] "Fast Sample Data Wavelet Transform CMOS VLSI implementation," G. Gonzalez Altamirano, A. Diaz Sanchez and J. Ramirez Angulo, Midwest Symposium on Circuits and Systems, Ames Iowa, August 11 13 1996

[83] " A new Universal Analog Fuzzifier Based on Operational Transconductance Multiplier," P. Saavedra, J. Ramirez Angulo and J. Zrilic, NASA URC Technical Conference on Education Space, Autonomy, Earth and Environment, Feb. 16 19, 1997, pp. 655 658

[84] " Various Hardware Implementations of Membership function generators," P. Saavedra, D.G. Zrilic, J. Ramirez Angulo and B. Yuan, NASA URC Technical Conference on Education Space, Autonomy, Earth and Environment, Feb. 16 19, 1997, pp. 849 855

[85] " Hardware Implementation of Memebership Function Look up table Approach," T. Peterson, D. Zrilic and J. Ramirez Angulo, B. Yuan NASA URC Technical Conference on Education Space, Autonomy, Earth and Environment, Feb. 16 19, 1997, pp. 579 580.

[86] " Piecewise linear memebership function generator  Divider Approach," R. Hart, G. Martinez, B. Yuan, D. Zrilic and J. Ramirez Angulo, NASA URC Technical Conference on Education Space, Autonomy, Earth and Environment, Feb. 16 19, 1997, pp. 325 330

[87] "Modeling Multiple Input Floating Gate Transistors for Analog Signal Processing," J. Ramirez Angulo, G. Gonzalez Altamirano and S.C. Choi, 1997 International Symposium on Circuits and Systems, June 9 12, Hong Kong.

[88] " Piecewise linear membership function generator  Divider Approach," R. Hart, G. Martinez, B. Yuan, D. Zrilic and J. Ramirez Angulo, NASA URC Technical Conference on Education Space, Autonmy, Earth and Environment, Feb. 16 19, 1997, pp. 325 330

[89] "Modeling Multiple Input Floating Gate Transistors for Analog Signal Processing," J. Ramirez Angulo, G. Gonzalez Altamirano and S.C. Choi, IEEE International Symposium on Circuits and Systems, Hong Kong, June 9 12 1997.

[90] "A Novel Sample Data Adaptive Filter," A. Diaz Sanchez and J. Ramirez Angulo, IEEE International Symposium on Circuits and Systems, Hong Kong, June 9 12 1997.

[91] "A Current Mode Continuous Time Adaptive Filter," A. Diaz Sanchez and J. Ramirez Angulo, 40th Midwest Symposium on Circuits and Systems, Santa Barbara, CA, August 3 6, 1997.

[92] "New Analog Current mode/Voltage Mode Fuzzifier with Continuously Adjustable Parameters," J. Ramirez Angulo, Jorge Zrlici, Patricias Saavedra and Antonio Lopez, 40th Midwest Symposium on Circuits and Systems, Santa Barbara, CA, August 3 6, 1997.

[93] "A new Programmable Logic Family Using Multiple Input Floating Gate Transistors," J. Ramirez Angulo and G. Gonzalez Altamirano, 40th Midwest Symposium on Circuits and Systems, Santa Barbara, CA, August 3 6, 1997.

[94] "A continuous time Analog Median Filter," Alejandro Diaz Sanchez, J. Ramirez Angulo and Antonio Lopez. IEEE NSIP 97, McKinack Island, Michigan, Sept. 8 10, 1997

[95] "An analog Approximation to median filtering," Alejandro Diaz Sanchez, J. Ramirez Angulo and Antonio Lopez, ELECTRO'97, pp. 111 114, Chihuahua, Mexico, October 27 31 !997, .

[96] "A Current mode continuous time adaptive filtering," Alejandro Diaz Sanchez, and J. Ramirez Angulo, ELECTRO'97, pp. 106 110, Chihuahua, Mexico, October 27 31 1997.

[98] "Building Blocks of Linear and Nonlinear Circuits Based on Operational Transconductance Amplifiers," Anthony Esquibel, Spyros Andreou and J. Ramirez Angulo, Nasa URC Technical Conference 98, February 22 26, 1998, Hunstsville Alabama,

[99] "Novel Programmable Linear and Nonlinear Oscillator Architectures," Catharine Rice and J. Ramirez Angulo, Nasa URC Technical Conference 98, February 22 26, 1998, Hunstsville Alabama,pp. 618 622

[100] "An example of Mixed Processing of Delta Sigma Modulated Pulse Stream," Catharine Rice and J. Ramirez Angulo, Nasa URC Technical Conference 98, February 22 26, 1998, Hunstsville Alabama,

[101] Low Voltage Analog Modular expandable VLSI fuzzy inference engine, J. Ramirez Angulo and J. Zrilic, World Automation Conference 98, May 10 14 98 Anchorage, Alaska, pp. 815 821.

[102] Feedforward Robust Fuzzy Control, D. Zrilic, E. Kosmatopoulus and J. Ramirez, WAC'98 Anchorage Alaska, May 98, pp. 213 218.

[103] "High Performance Cell for Solving Real Time Field Problems Using the Resistive Grid Method," N.C. Carneiro and J. Ramirez Angulo, 1998 IEEE International Conference on Circuits and Systems, May 31   June 3, 1998, Monterrey, CA.

[104] "Analog Building Blocks for a Sampled Data Fast Wavelet Transform CMOS VLSI implementation," G. Gonzalez Altamirano and J. Ramirez Angulo, 1998 IEEE International Conference on Circuits and Systems, May 31   June 3, 1998, Monterrey, CA.

[105] An Adaptive Cell for Resistive Grid Applications,@ N. Carneiro and J. Ramirez Angulo, Second International Workshop on Design of Mixed Mode Integrated Circuits and Systems, Guanajuato Mexico, July 27 29 1998

[106] A High Speed Analog Median Filter in CMOS Technology, A. Diaz Sanchez, J. Ramirez Angulo, A. Lopez and E. Sanchez Sinencio, IEE ICECS98, September 7 10 1998, Lisboa Portugal pp. 381 384.

[107] A low power analog median filter, A. Diaz Sanchez and J. Ramirez Angulo, IEEE Second International Workshop on Design of Mixed Mode Integrated Circuits and Applications, Guanajuato, MX July 27 29, 1998, pp. 49 51

[108] Fuzzy Processor Based on Symmetric Triangular Membership Functions, S.M. Abdel Hafeez, S. Straks and J. Ramirez Angulo, NASA URCTC 98, Hunstville, Al, Feb. 98 pp. 618 622, pp. 237 242.

[109] "Novel Low Power and Constant gm operational amplifier using multiple input floating gate transistors," S.C Choi and J. Ramirez Angulo. IEEE Analog VLSI Workshop

[110] Generador de Funciones de Pertenencia para Procesado Difuso Adaptivo A. Lopez Martin, J. Ramirez Angulo and A. Carlosena SAAEI98, Pamplona, Spain, September 16 18 1998.

[111] Compact Low Voltage Analog Defuzzifier Using Multiple Input Floating Gate Transistors, J. Ramirez Angulo, S.C. Choi and D. Zrilic, Proceedings DCIS'98 Madrid November 17 20 1998, pp. 332 337.

[112] Linear Amplifiers with very high Gain Bandwidth Product, J. Ramirez Angulo.1999 IEEE International Symposium on Circuits and Systems, Orlando Fl, May 30 June 2, 99

[113] CMOS op amps for a single supply close to a threshold voltage and with almost rail to rail signal swing, J. Ramirez Angulo, A Torralba, R.G. Carvajal and J.Tombs 1999 IEEE International Symposium on Circuits and Systems, Orlando Fl, May 30 June 2, 99

[114] A comparison of architectures for a programmable fuzzy chip, T. Lund,A Torralba, R.G. Carvajal and J. Ramirez Angulo 1999 IEEE International Symposium on Circuits and Systems, Orlando Fl, May 30 June 2, 99

[115] "Analog VLSI subaperture centriod circuits", P.M. Furth and N. Clark, 7th NASA Symp. VLSI Design, Albuquerque, NM, October 1998.

[116] "A two dimensional Poisson equation solver implemented in analog VLSI", P.M. Furth and N. Clark, 7th NASA Symp. VLSI Design, Albuquerque, NM, October 1998.

[117] "A subthreshold CMOS implementation of a two dimensional mechanical cochlear model", H.A. Ommani and P.M. Furth, 41st Midwest Symp. Circ. Syst., South Bend, IN, August 1998.

[118] "A 500 nW floating gate amplifier with programmable gain", P.M. Furth and H.A. Ommani, 41st Midwest Symp. Circ. Syst., South Bend, IN, August 1998.

[119] "A continuous time bandpass filter implemented in subthreshold CMOS with large signal stability", P.M. Furth, 1997 Midwest Symp. Circ. Syst., Sacramento, CA, August 1997.

[120] "Low voltage highly linear transconductor design in subthreshold CMOS", P.M. Furth and H.A. Ommani, 1997 Midwest Symp. Circ. Syst., Sacramento, CA, August 1997.

[121] "Translinear transconductor design for cochlear filter banks", P.M. Furth and A.G. Andreou, 1996 Midwest Symp. on Circuits and Systems, Ames, IA, August, 1996.

[122] "Cochlear models implemented with linearized transconductors", P.M. Furth and A.G. Andreou, IEEE International Symposium on Circuits and Systems 1996, Atlanta, GA, vol. 3, pp. 491 494, May, 1996.

[123] "Acoustic transient processing using the Hopkins Electronic EAR", F. Pineda, K. Ryals, D. Steigerwald, and P.M. Furth, WCNN 95, Wash., D.C., vol. 1, pp. 136 141, July, 1995.

[124] "Transconductors in subthreshold CMOS", P.M. Furth and A.G. Andreou, The 29th Conference on Information Sciences and Systems, Baltimore, MD, March, 1995.

[125] "Integrators for continous time analog auditory models", P.M. Furth and A.G. Andreou, The 29th Conference on Information Sciences and Systems, Baltimore, MD, March, 1995.

[126] "Experiments with the Hopkins Electronic EAR", P.M. Furth, N.K. Goel, A.G. Andreou, and M.H. Goldstein, Jr., 14th Speech Research Symposium, Baltimore, MD, pp. 183 189, June, 1994.

[127] "A high drive low power BiCMOS buffer using compound PMOS/NPN transistors", P.M. Furth and A.G. Andreou, 36th Midwest Symposium on Circuits and Systems, Detroit, MI, pp. 1369  1372, August, 1993.

[128] "An auditory processor for multi channel cochlear implants", P.M. Furth, A.G. Andreou, and M.H. Goldstein, Jr., The 1993 Conference on Implantable Auditory Prostheses, Smithfield RI, abstract/poster only, July, 1993.

[129] "On fault probabilities and yield models for analog VLSI neural networks", P.M. Furth and A.G. Andreou, IEEE International Workshop on Defect and Fault Tolerance in VLSI Systems, Dallas, TX, pp. 167  176, October, 1992.

[130] "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

[131] "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.

[132] A comparison of architectures for a programmable fuzzy chip, T. Lund,A Torralba, R.G. Carvajal and J .Ramírez-Angulo," 1999 IEEE International Symposium on Circuits and Systems, Orlando Fl, May 30-June 2, 99, pp. V-623-626.