A novel approach for determining the GaAs MESFET small-signal equivalent-circuit elements

A simple way of extracting the small-signal equivalent circuit of a MESFET is proposed. The intrinsic elements and one of the extrinsic parameters are described as functions of the remaining extrinsic parameters. This drastically reduces the search space and the number of unknowns for optimization....

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Bibliographic Details
Published inIEEE transactions on microwave theory and techniques Vol. 45; no. 12; pp. 2084 - 2088
Main Authors Ooi, Ban-Leong, Leong, Mook-Seng, Kooi, Pang-Shyan
Format Journal Article
LanguageEnglish
Published IEEE 01.12.1997
Subjects
Circuit simulation
Equivalent circuits
Frequency measurement
Gallium arsenide
MESFET circuits
Microwave communication
Minimization methods
Nonlinear equations
Optimization methods
Simulated annealing
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Summary:A simple way of extracting the small-signal equivalent circuit of a MESFET is proposed. The intrinsic elements and one of the extrinsic parameters are described as functions of the remaining extrinsic parameters. This drastically reduces the search space and the number of unknowns for optimization. It provides an important new insight into the correlation between the various extrinsic and intrinsic parameters. The method also reveals that there are two sets of solution for the parameters R/sub s/ and L/sub s/ which can fully satisfy the global solution. A numerical comparison in terms of both accuracy and speed between the proposed method and some conventional methods on a 400-/spl mu/m gatewidth GaAs MESFET is presented.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0018-9480
1557-9670
DOI:10.1109/22.643741