Microwave Power FET DC Model Extraction through Isothermal Non-Pulsed Measurements

In this work a new approach to extract the experimental fitting parameters of a microwave power FET temperature dependent DC-model is presented. The suggested procedure avoids the possibility of multiple model solutions by eliminating the measurements temperature dependence. This is accomplished by making use of isothermal measurements which in turn are obtained following a simple non-pulsed approach. The proposed technique was applied to a commercial X band MMIC FET power amplifier