Analysis of the effects of parasitic capacitance and inductance on inverse class E power amplifier

Abstract

In this paper, an analysis is performed to determine the effects of the power transistor's parasitic capacitance and inductance on the performance of inverse Class E power amplifiers. The theoretical analysis shows that the inverse Class E power amplifier's performance does not monotonically vary with the increasing parasitic output capacitance. Numerical results are given to show the variations of output signal's magnitude and phase, drain efficiency, and other parameters about the non-optimum switching conditions. After that, the equation to determine the maximum frequency of the inverse Class E power amplifier is also proposed.