Type of Document	Master's Thesis
Author	Lau, Mark C
Author's Email Address	mcl4c@virginia.edu
URN	etd-7497-162858
Title	Small Signal Equivalent Circuit Extraction From A Gallium Arsenide MESFET Device
Degree	Master of Science
Department	Electrical Engineering
Advisory Committee	Advisor Name Title A. Elshabini-Riad Committee Chair I. J. Bahl none I. M. Besieris none
Keywords	MESFET Gallium Arsenide Small Signal Modeling Simplex Method
Date of Defense	1997-07-23
Availability	unrestricted
Abstract The development of microwave Gallium Arsenide Metal Semiconductor Field Effect Transistor (MESFET) devices has enabled the miniaturization of pagers, cellular phones, and other electronic devices. With these MESFET devices comes the need to model them. This thesis extracts a small signal equivalent circuit model from a Gallium Arsenide MESFET device. The approach taken in this thesis is to use measured S- parameters to extract a small signal equivalent circuit model by optimization. Small signal models and S-parameters are explained. The Simplex Method is used to optimize the small signal equivalent circuit model. A thorough analysis of the strengths and weaknesses of the Simplex method is performed.
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access    newt.pdf 642.68 Kb 00:02:58 00:01:31 00:01:20 00:00:40 00:00:03

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