Amplifier circuit, antenna module and wireless communication apparatus

摘要

An amplifier circuit that amplifies a carrier wave that a transmitting and receiving part has received, and includes a superimposition wave generation part that generates a superimposition wave to be superimposed onto the carrier wave; an amplifying part that adds the carrier wave and the superimposition wave to obtain an amplified carrier wave and outputs the amplified carrier wave; and an amplitude detection part that detects, based on a change in an amplitude value of the carrier wave, that the carrier wave is a predetermined carrier wave that carries a predetermined communication signal. The amplifier circuit outputs the amplified carrier wave when having detected the predetermined carrier wave.

主权项

1. An amplifier circuit that amplifies a carrier wave that a transmitting and receiving part has received, the amplifier circuit comprising:
a superimposition wave generation part that generates a superimposition wave to be superimposed onto the carrier wave; an amplifying part that adds the carrier wave and the superimposition wave to obtain an amplified carrier wave, and outputs the amplified carrier wave; an amplitude detection part that detects, based on a change in an amplitude value of the carrier wave, that the carrier wave is a predetermined carrier wave that carries a predetermined communication signal, wherein the amplifier circuit outputs the amplified carrier wave when the amplitude detection part has detected the predetermined carrier wave; and a switch part that controls connection between the amplifying part and an output terminal of the amplifier circuit, wherein the amplitude detection part controls the switch part to supply the output of the amplifying part to the output terminal of the amplifier circuit when the amplitude detection part has detected the predetermined carrier wave.