The Two-Tone Model for Power Amplifier Modeling

This paper presents a novel methodology for power amplifier (PA) behavioral model formulation. Instead of the conventional "postulate and test", we start from the features that the model should address, to build it in a constructive way. As an example, we formulate a model intended to represent the nonlinear dynamics excited by a two-tone excitation. Conceived in the frequency domain, the resulting time-domain model, the Two-Tone Model, shows a very simple and flexible architecture and yet a very good modeling accuracy when tested against the standard Generalized Memory Polynomial (GMP) model.