NDLI: Nonlinear Steady-State III–V FET Model for Microwave Antenna Switch Applications

Content Provider	IEEE Xplore Digital Library
Author	Takatani, S. Cheng-Duan Chen
Copyright Year	1963
Abstract	A nonlinear III-V field-effect transistor model is proposed for designing microwave antenna switches and related circuits, off-state gate and drain capacitance values of a pseudo-morphic high-electron-mobility transistor (HEMT) derived from pulsed S-parameters with a deep OFF-state quiescent gate voltage are found to be much less voltage dependent than capacitance values measured by a nonpulsed bias owing to trap-induced dispersion effects. Our device model based on pulsed-bias CV characteristics accurately simulates switch nonlinearity. Both gate and drain capacitance values are assumed to be nonlinear, and a charge expression is developed for model implementation. For both capacitance values, a nonpulsed-bias CV curve is also utilized to maintain accurate capacitance at the quiescent voltage and, thus, accurate simulation of off-switch isolation. Additional terms are introduced to an existing drain current model to improve accuracy at high V_gs/low V_ds and subthreshold regions. Furthermore, the model is extended to multiple-gate devices. Harmonics generated from both OFF- and ON-state switches, insertion loss, and isolation are accurately predicted for both single- and multiple-gate HEMTs.
Sponsorship	IEEE Electron Devices Society
Starting Page	4301
Ending Page	4308
Page Count	8
File Size	808141
File Format	PDF
ISSN	00189383
Volume Number	58
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Logic gates Capacitance Switches FETs Voltage measurement Integrated circuit modeling Polynomials nonlinear distortion Field-effect transistor (FET) switches harmonic distortion (HD) microwave switches modeling
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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