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      Analog neural networks for real-time constrained optimization 

      Domínguez Castro, Rafael; Rodríguez Vázquez, Ángel Benito; Huertas Díaz, José Luis; Sánchez Sinencio, Edgar; Linares Barranco, Bernabé (Institute of Electrical and Electronics Engineers, 1990)
      Architectures and circuit techniques for implementing general piecewise constrained optimization problems using VLSI ...
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      On the Design of Voltage-Controlled Sinusoidal Oscillators Using OTA's 

      Rodríguez Vázquez, Ángel Benito; Linares Barranco, Bernabé; Huertas Díaz, José Luis; Sánchez Sinencio, Edgar (Institute of Electrical and Electronics Engineers, 1990)
      A unified systematic approach to the design of voltage-controlled oscillators using only operational transconductance ...
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      Accurate design of analog CNN in CMOS digital technologies 

      Rodríguez Vázquez, Ángel Benito; Domínguez Castro, Rafael; Huertas Díaz, José Luis (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 ...
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      Design of an analog/digital truly random number generator 

      Espejo Meana, Servando Carlos; Martín, J. D.; Rodríguez Vázquez, Ángel Benito; Huertas Díaz, José Luis (Institute of Electrical and Electronics Engineers, 1990)
      An analog-digital system is presented for the generation of truly random (aperiodic) digital sequences. This model is based ...
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      Very high frequency CMOS OTA-C quadrature oscillators 

      Linares Barranco, Bernabé; Sánchez Sinencio, Edgar; Rodríguez Vázquez, Ángel Benito; Huertas Díaz, José Luis (Institute of Electrical and Electronics Engineers, 1990)
      An approach to the design of high-frequency monolithic voltage-controlled oscillators using operational transconductance ...
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      CMOS circuit implementations for neuron models 

      Linares Barranco, Bernabé; Sánchez Sinencio, Edgar; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 1990)
      The mathematical neuron basic cells used as basic cells in popular neural network architectures and algorithms are discussed. ...
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      A CMOS Implementation of Fitzhugh-Nagumo Neuron Model 

      Linares Barranco, Bernabé; Sánchez Sinencio, Edgar; Rodríguez Vázquez, Ángel Benito; Huertas Díaz, José Luis (Institute of Electrical and Electronics Engineers, 1990)
      A CMOS circuit is proposed that emulates FitzHugh-Nagumo's differential equations using OTAs, diode connected MOSFETs and ...
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      Hysteresis based neural oscillators for VLSI implementations 

      Linares Barranco, Bernabé; Sánchez Sinencio, Edgar; Rodríguez Vázquez, Ángel Benito; Huertas Díaz, José Luis (Institute of Electrical and Electronics Engineers, 1991)
      The actual tendency in most of the work that is being done in VLSI neural network research is to use the simplest possible ...
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      Design of RC-active oscillators using composite amplifiers 

      Pérez Verdú, Belén; Huertas Díaz, José Luis; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 1991)
      The design of composite opamp Wien-Bridge oscillators is systematically approached by using a general model including ...
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      A switched-capacitor broadband noise generator for CMOS VLSI 

      Rodríguez Vázquez, Ángel Benito; Delgado Restituto, Manuel; Espejo Meana, Servando Carlos; Huertas Díaz, José Luis (Institution of Engineering and Technology, 1991)
      A switched-capacitor circuit is reported for the generation of broadband white noise in MOS VLSI. It is based on the ...
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      VLSI implementation of a transconductance mode continuous BAM with on chip learning and dynamic analog memory 

      Linares Barranco, Bernabé; Sánchez Sinencio, Edgar; Rodríguez Vázquez, Ángel Benito; Huertas Díaz, José Luis (Institute of Electrical and Electronics Engineers, 1991)
      In this paper we present a complete VLSI Continuous-Time Bidirectional Associative Memory (BAM). The short term memory ...
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      An advanced symbolic analyzer for the automatic generation of analog circuit design equations 

      Fernández Fernández, Francisco Vidal; Rodríguez Vázquez, Ángel Benito; Huertas Díaz, José Luis (Institute of Electrical and Electronics Engineers, 1991)
      A tool for symbolic analysis of analog integrated circuits is presented featuring accurate simplification, pole/zero ...
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      Frequency tuning loop for VCOs 

      Linares Barranco, Bernabé; Rodríguez Vázquez, Ángel Benito; Sánchez Sinencio, Edgar; Huertas Díaz, José Luis (Institute of Electrical and Electronics Engineers, 1991)
      A frequency tuning circuit is introduced for VCOs (voltage-controlled oscillators) so that the final relationship between ...
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      CMOS OTA-C high-frequency sinusoidal oscillators 

      Linares Barranco, Bernabé; Rodríguez Vázquez, Ángel Benito; Sánchez Sinencio, Edgar; Huertas Díaz, José Luis (Institute of Electrical and Electronics Engineers, 1991)
      Several topology families are given to implement practical CMOS sinusoidal oscillators by using operational transconductance ...
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      Efficient state reduction methods for PLA-based sequential circuits 

      Avedillo de Juan, María José; Quintana Toledo, José María; Huertas Díaz, José Luis (Institute of Electrical and Electronics Engineers, 1992)
      Experiences with heuristics for the state reduction of finite-state machines are presented and two new heuristic algorithms ...
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      Architectures and building blocks for CMOS VLSI analog "neural" programmable optimizers 

      Domínguez Castro, Rafael; Rodríguez Vázquez, Ángel Benito; Huertas Díaz, José Luis; Sánchez Sinencio, Edgar (Institute of Electrical and Electronics Engineers, 1992)
      A modular reconfigurable serial architecture is presented for the analog/digital implementation of constrained optimization ...
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      Analog Neural Programmable Optimizers in CMOS VLSI Technologies 

      Domínguez Castro, Rafael; Rodríguez Vázquez, Ángel Benito; Huertas Díaz, José Luis; Sánchez Sinencio, Edgar (Institute of Electrical and Electronics Engineers, 1992)
      A 3-μm CMOS IC is presented demonstrating the concept of an analog neural system for constrained optimization. A serial ...
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      CMOS analog neural network systems based on oscillatory neurons 

      Linares Barranco, Bernabé; Sánchez Sinencio, Edgar; Rodríguez Vázquez, Ángel Benito; Huertas Díaz, José Luis (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 ...
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      Modular analog continuous-time VLSI neural networks with on chip hebbian learning and analog storage 

      Linares Barranco, Bernabé; Sánchez Sinencio, Edgar; Rodríguez Vázquez, Ángel Benito; Huertas Díaz, José Luis (Institute of Electrical and Electronics Engineers, 1992)
      A modular analog circuit design approach for hardware implementations of neural networks is presented. This approach is ...
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      A piecewise-linear function approximation using current mode circuits 

      Ramírez Angulo, Jaime; Sánchez Sinencio, Edgar; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 1992)
      A methodology to design currentmode circuits for piecewise-linear function approximation is presented. The technique is ...