A Novel Approach to Selecting Doherty Amplifier Asymmetry

Abstract

This work introduces a new method for selecting the optimal Doherty power amplifier (PA) asymmetry ratio considering both the Doherty topology limitations, and the limitations of the transistor technology. The method is scalable with Doherty complexity and is technology agnostic. An example Doherty is also briefly shown which supports this new method, with excellent alignment shown between measured and predicted performance.