Journal
INTERNATIONAL JOURNAL OF NUMERICAL MODELLING-ELECTRONIC NETWORKS DEVICES AND FIELDS
Volume 30, Issue 1, Pages -Publisher
WILEY
DOI: 10.1002/jnm.2151
Keywords
FET nonlinear model; large-signal network analyzer; nonlinear model extraction; vector-calibrated measurements
Funding
- FWO-Vlaanderen, Belgium
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In this paper, we describe an extraction procedure of nonlinear models for microwave field-effect transistor (FET). We use a nonlinear model available in commercial CAD tools, and we extract the parameters by combining direct extraction and numerical optimization. We determine a first estimate of the model parameters by few DC and S-parameter measurements. Next, we refine the parameters by optimization against low-frequency and high-frequency vector-calibrated large-signal measurements gathered with a Large-Signal-Network Analyzer (LSNA). As case study we consider a 0.25x200 mu m(2) GaN FET on SiC for power amplifier applications. Ultimately, we want to show that a good accuracy level can be achieved while minimizing the extraction effort and that an accurate model can be built and suitably tailored depending on the final application. Copyright (c) 2016 John Wiley & Sons, Ltd.
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