Andrei Grebennikov, Member, IEEE

− The results of exact time domain analysis of the switched-mode tuned Class E power amplifiers with a quarterwave transmission line are presented with analytical determination of the optimum load network parameters. Effects of the quarterwave transmission line and collector capacitance on the current and voltage waveforms are discussed and analyzed. The ideal collector voltage and current waveforms demonstrate a possibility of 100-percent efficiency without overlapping between each other. A possibility of load network implementation including output matching circuit at RF and microwave frequencies using lumped and transmission line elements is considered with accurate derivation of the circuit parameters. The switched-mode Class E power amplifiers with a quarterwave transmission line offer a new challenge for RF and microwave power amplification providing high-efficiency operation conditions.