An integrated nonlinear behavior modeling system for RF power amplifiers/transmitters

Abstract

This paper proposes an integrated nonlinear behavior modeling system for RF power amplifiers/transmitters. The system includes several sub-routines such as: a) Signal generation/acquisition module used to feed the device under test with a modulated signal and to capture its output signal. b) Modeling module that first estimate and correct for the DUT delay and then identify the parameters of a given behavioral model (reverse or forward). c) Post-processing module which includes a time-domain, frequency domain and power domain validation features. It is also compatible with system level simulation tools such as Agilent-ADS and Simulink. Different dynamic nonlinear models and a variety of model identification algorithms can be applied to build the dynamic nonlinear behavior model of the power amplifier/transmitter.