A Theoretical Efficiency Analysis of Doherty Power Amplifiers built with Different Amplifier Classes

In this study, the efficiency performance of various classes in a Doherty power amplifier is investigated through theoretical calculations. Class-AB, B, and F power amplifiers are chosen as the carrier amplifier that has an equal power level with the peaking amplifier. After performing the theoretical calculations, efficiency graphs are drawn for each power amplifier class versus the normalized output power level. Also, results are compared and discussed in terms of efficiency performance.