A novel higher order extending method in a MESFET channel current model for Volterra series analysis

Abstract

We propose a new method to find the higher order Taylor series coefficients of a MESFET channel current model for Volterra series analysis from the measured lower order Taylor coefficients at several bias points. Generally, the third-order Taylor expansion is not sufficient to accurately characterize the linear amplifier distortion properties. The channel current model is improved with these additional higher order terms. (C) 1999 John Wiley & Sons, Inc.