Nonlinear Resistor Circuits Using Capacitively Coupled Multi-Input MOSFETs

Yoshihiko HORIO  Ken'ichi WATARAI  Kazuyuki AIHARA  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E82-A   No.9   pp.1926-1936
Publication Date: 1999/09/25
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: PAPER
Category: Circuit Theory
nonlinear resistor circuits,  negative resistor,  

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A family of nonlinear resistor circuits with Λ and V-type I-V characteristics is proposed by using capacitively coupled multi-input MOSFETs. Their I-V characteristics can be easily altered by external control voltages. Moreover, the proposed circuits are fully compatible with a standard CMOS semiconductor process because only enhancement-type MOSFETs are necessary. Furthermore, nonlinear capacitors can be used for the capacitively coupled multi-input MOSFETs in the proposed circuits, so that a simple digital CMOS process with nonlinear capacitors can be used to fabricate the proposed circuits. Simple equations for a numerical simulation of the circuits are derived. Moreover, results from numerical simulations and experiments with discrete elements are demonstrated.