Generalized Analysis and Performance Investigation of the Class-E/Fn Rectifiers

This paper gives analytical waveform equations of the class-E/F
_n
rectifier. By using the analytical waveforms, we investigate performances of the class-E/F
₂
and E/F
₃
rectifiers at any quality factor of the harmonic-resonant and output filters. From the investigations, the rectifier performances, such as the power output capability and the AC-DC current transfer function, are clarified. Besides, the design parameters of the class-E/F
_n
rectifier with no input reactance, which is called the class-Φ
_n
rectifier, are obtained. Four types of rectifiers, namely, class-E/F
₂
, E/F
₃
, Φ
₂
, and Φ
₃
rectifiers, were designed and implemented as a part of the resonant DC-DC converters. The experimental and PSpice-simulation results verified the analytical waveform equations and the performance investigation.