Radio-frequency power amplifier, radio-frequency front-end module and communication terminal

Abstract

Disclosed are a radio-frequency power amplifier, a radio-frequency front-end module and a communication terminal. The radio-frequency power amplifier includes a control unit, a power amplification unit, a detection unit and an input matching unit. In the radio-frequency power amplifier, the detection unit detects an index parameter related to the output power of the power amplification unit in real time, converts the index parameter into a voltage positively correlated to the magnitude of the index parameter, and outputs the voltage to the input matching unit, such that a phase change of a radio-frequency signal input into the power amplification unit is the opposite of a phase change generated by an output signal of the power amplification unit, thereby effectively realizing the compensation of phase distortion of radio-frequency signals output by the power amplification unit in different modes, and improving a linearity index of the radio-frequency front-end module.

Dependencies are inferred from the claim text.