Class E oscillator with two switchable frequencies

The paper describes a new design of Class E oscillator that can switch between two oscillation frequencies while maintaining high efficiency at both frequencies. The oscillator is designed based on a class E amplifier with an output circuit that satisfies the conditions of class E at two frequencies. The feedback circuit allows the change of capacitor to switch between two operating frequencies. Calculation, modeling and experimental study of the oscillator at frequencies of 4.5 and 5 MHz are presented.