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Consistent small-signal and large-signal extraction techniques for heterojunction FET's

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5 Author(s)
Ph. Jansen ; Interuniv. Micro Electron. Center, Leuven, Belgium ; D. Schreurs ; W. De Raedt ; B. Nauwelaers
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A new method is reported to extract large-signal current and charge sources from the small-signal S-parameters of pseudomorphic heterojunction field effect transistors (PHFET's). This method produces a new intrinsic small-signal equivalent circuit topology with less constraints concerning the extraction of the large-signal current and charge sources. The main advantage of this new topology is charge conservation. The S-parameter measurements of a 0.2-μm PHFET agrees well with the small-signal S-parameter data, obtained after evaluation of the new large-signal model at different bias points

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IEEE Transactions on Microwave Theory and Techniques  (Volume:43 ,  Issue: 1 )