Patent ID: 8704601

Claim:
A class-E power amplifier, comprising a driver stage (DS) including a first power amplifier with transistors, to which an input signal is inputted; a main stage (MS), including a second power amplifier with transistors, whose input is connected to the output of the DS; and a first LC resonator whose one end is connected to the output of the DS and the other end to the ground as an AC equivalent circuit and a second LC resonator whose one end is connected to the input of the MS and the other end to the ground as an AC equivalent circuit, wherein the first LC resonator includes an inductor and a capacitor connected in series with each other, wherein the AC equivalent circuit of the second LC resonator includes an inductor whose one end is connected to the input of the main stage and the other end is to the ground and a capacitance component, connected in series with the inductor, viewed from the inductor to the MS.