Analysis of a class E tuned power amplifier with non-linear parasitic capacitance, using genetic algorithm

At the frequencies above 900 MHz, the nonlinear parasitic capacitance of the transistor will be the majority of the needed parallel capacitance of a class E amplifier. Using the Genetic Algorithm and Runge-Kutta Method, this paper analyses the class E amplifier with a small DC-feed inductance and a nonlinear parallel capacitance. The effects caused by these two non-ideal elements are presented.