POWER AMPLIFIER AND SIGNAL PROCESSING METHOD THEREOF

摘要

A power amplifier and a signal processing method thereof are provided. The power amplifier includes a second-order filter circuit (10), a modulation circuit (20) and an output circuit (30), wherein the output end of the second-order filter circuit is connected with the input end of the modulation circuit, and the output end of the modulation circuit is connected with the input end of the output circuit, and the output end of the output circuit is respectively connected with the input end of each filter circuit stage in the second-order filter circuit. The method includes: the second-order filter circuit sends the signal to the modulation circuit, and the modulation circuit modulates the signal and sends it to the output circuit, and the output circuit outputs the modulation signal and feeds back the signal to the input end of each filter circuit stage in the second-order filter circuit.