Noise Parameter Extraction of GaAs MESFETs and PHEMTs From Swept Noise Figure Measurements

A new method of measuring and extracting bias dependent noise parameters for GaAs MESFETs and PHEMTs is presented. This technique only requires noise figure and S-parameter measurements over fiequency. This eliminates the need for time-consuming traditional sourcepull measurements and facilitates rapid noise parameter extraction. This technique makes the extraction of bias-dependent noise models of MESFETs and PHEMTs practical, for the first time, in a production test environment.