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Ponencia
CMOS analog neural network systems based on oscillatory neurons
(Institute of Electrical and Electronics Engineers, 1992)
This paper addresses the design of two neural network systems based on the use of pulsing neurons. Each neuron is built as a simple voltage controlled oscillator (VCO) whose control voltage makes the circuit to oscillate ...
Artículo
Chaos via a piecewise-linear switch ed-capacitor circuit
(Institution of Engineering and Technology, 1987)
A nonlinear switched-capacitor circuit that generates chaotic signals is reported. The circuit is described by a first-order piecewise-linear discrete equation that exhibits a chaotic dynamics. Experimental results ...
Artículo
A new nonlinear time-domain op-amp macromodel using threshold functions and digitally controlled network elements
(Institute of Electrical and Electronics Engineers, 1988)
A general-purpose nonlinear macromodel for the time-domain simulation of integrated circuit operational amplifiers (op amps), either bipolar or MOS, is presented. Three main differences exist between the macromodel and ...
Ponencia
Nonlinear time-domain macromodeling of OTA circuits
(Institute of Electrical and Electronics Engineers, 1989)
The authors present an accurate nonlinear macromodel of the operational transconductance amplifier (OTA) which is suitable for the transient simulation of OTA-based CMOS analog integrated circuits. As compared to device-level ...
Ponencia
Generation and design of sinusoidal oscillators using OTAS
(Institute of Electrical and Electronics Engineers, 1988)
The design of voltage-controlled oscillators (VCOs) using operational transconductance amplifiers (OTAs) is discussed. Several oscillator structures are proposed. They use only OTAs and capacitors (OTA-C) and are very ...
Ponencia
Accurate design of analog CNN in CMOS digital technologies
(Institute of Electrical and Electronics Engineers, 1990)
Explores the design of cellular neural networks (CNN) by using sampled-data analog current-mode techniques which neither requires capacitors nor resistors but just MOS transistors. The feature makes the proposed technique ...
Ponencia
Modular analog continuous-time VLSI neural networks with on chip hebbian learning and analog storage
(Institute of Electrical and Electronics Engineers, 1992)
A modular analog circuit design approach for hardware implementations of neural networks is presented. This approach is based on the use of small transconductance multipliers as the main component, and is therefore called ...
Artículo
Chaos From Switched-Capacitor Circuits: Discrete Maps
(Institute of Electrical and Electronics Engineers, 1987)
A special-purpose analog computer made of switched-capacitor circuits is presented for analyzing chaos and bifurcation phenomena in nonlinear discrete dynamical systems modeled by discrete maps *n + t = fan)-Experimental ...
Artículo
A Chaotic Switched-Capacitor Circuit for 1/f Noise Generation
(Institute of Electrical and Electronics Engineers, 1992)
A switched-capacitor circuit is reported for the generation of 1 / fYnoise. The circuit is described by a chaotic first-order piecewise-finear discrete map which yields a hopping transition between regions of chaotic motions ...
Ponencia
Design of RC-active oscillators using composite amplifiers
(Institute of Electrical and Electronics Engineers, 1991)
The design of composite opamp Wien-Bridge oscillators is systematically approached by using a general model including amplitude control issues. Two different design criteria are presented and their main features summarized. ...