Nonlinear common source MESFET behaviour and model validation

In this paper we investigate the effect of bias conditions and load resistance on the nonlinear behaviour of a MESFET Common Source (CS) amplifier at medium frequencies. The distortion nulling effects observed in measured results provide a good criteria for assessing large signal model performance over a wide range of bias conditions. The Parker-Skellern model of the MESFET is used to simulate the MESFET circuit configuration for which the distortion measurements were performed. The model predicts the observed distortion structure.