A Design Technique to Improve Harmonic Suppression in High Efficiency Wideband Class E RF Power Amplifier

抄録

This paper introduces a new wide bandwidth Class E power amplifier providing high order harmonic suppression circuit. A design technique is presented on the methodology to achieve wideband high efficiency performance while preserving high harmonic suppression. A prototype board demonstrated drain efficiency of 70% and second harmonic rejection of more than 84 dBc (as well as higher harmonics), and output power level more than 6.5 W with ±0.5 dB power flatness, across VHF band (136-174 MHz). Simulations of power performance (i.e. efficiency and output power) were verified by measurements, and good agreements were obtained.