Journal Issue10.1002/CTA.V37:1
Electronically controlled multiphase sinusoidal oscillators using current amplifiers
68
TL;DR: In this paper, a novel current-mode multiphase oscillator topology is introduced by employing current amplifiers and only grounded capacitors, which has better performance in terms of the number of required active elements, the employment of passive resistors, and the ability for electronic adjustment of the oscillation frequency.
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Abstract: A novel current-mode multiphase oscillator topology is introduced in this letter. This is realized by employing current amplifiers and only grounded capacitors. Attractive characteristics offered by the new topology are the electronic adjustment of the oscillation frequency, the absence of passive resistors, and the requirement of only grounded capacitors. Comparison with the corresponding already published current follower based structure shows that the proposed topology has better performance in terms of the number of required active elements, the employment of passive resistors, and the ability for electronic adjustment of the oscillation frequency. Copyright © 2008 John Wiley & Sons, Ltd.
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Citations
Neuromorphic Silicon Neuron Circuits
Giacomo Indiveri,Bernabe Linares-Barranco,Tara Julia Hamilton,André van Schaik,Ralph Etienne-Cummings,Tobi Delbruck,Shih-Chii Liu,Piotr Dudek,Philipp Hafliger,Sylvie Renaud,Johannes Schemmel,Gert Cauwenberghs,John V. Arthur,Kai Hynna,Fopefolu Folowosele,Sylvain Saïghi,Teresa Serrano-Gotarredona,Jayawan H B Wijekoon,Yingxue Wang,Kwabena Boahen +19 more
TL;DR: The most common building blocks and techniques used to implement these circuits, and an overview of a wide range of neuromorphic silicon neurons, which implement different computational models, ranging from biophysically realistic and conductance-based Hodgkin–Huxley models to bi-dimensional generalized adaptive integrate and fire models.
Neuromorphic electronic circuits for building autonomous cognitive systems
TL;DR: This work reviews neuromorphic circuits for emulating neural and synaptic dynamics in real time and discusses the role of biophysically realistic temporal dynamics in hardware neural processing architectures; it is argued how the circuits and networks presented represent a useful set of components for efficiently and elegantly implementing neuromorphic cognition.
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Voltage Differencing Buffered/Inverted Amplifiers and Their Applications for Signal Generation
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TL;DR: In this article, a novel modification of recently developed and studied family of active elements, called voltage differencing buffered amplifier (VDBA) and voltage difference in inverted buffered amplifiers (VDIBA) are discussed.
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On the Realization of Multiphase Oscillators Using Fractional-Order Allpass Filters
TL;DR: Fractional-order allpass filters are examined, the theory behind their operation is examined and their usefulness in the design of both multiphase and quadrature oscillators is demonstrated.
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Third-Order Quadrature Oscillator Circuit with Current and Voltage Outputs
TL;DR: A new quadrature oscillator of third order is presented which can provide four Quadrature current outputs and two quadratures voltage outputs and is a novel addition to the oscillator family.
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