A new pa behavioral model based on the linearization of multivariable nonlinearities and interpolation

Abstract

Traditionally, Taylor series models are only used under small signal or mildly nonlinear regimes. In this paper, a new behavioral model for microwave power amplifiers (PAs) based on first order Taylor expansion of multivariable nonlinearities and interpolation is proposed. The model is tailored for PAs driven by wideband, highly dynamic stimuli. Theoretical comparisons are made between this model and several other representative behavioral models. A mathematical simulation experiment designed for validation purposes is discussed.