POWER AMPLIFIER, RADIO REMOTE UNIT, AND BASE STATION

摘要

Provided is a power amplifier, comprising an envelope modulator (101), a main power amplifier (102) and an auxiliary power amplifier (103), wherein the envelope modulator (101) is respectively connected to a drain electrode of the main power amplifier (102) and a drain electrode of the auxiliary power amplifier (103) and used for obtaining an envelope voltage according to a received envelope signal and outputting the envelope voltage respectively to the drain electrodes of the main power amplifier (102) and auxiliary power amplifier (103); the main power amplifier (102) is connected to the envelope modulator (101) and used for taking the envelope voltage received from the envelope modulator (101) as an operating voltage at an operating state and performing amplification processing on a signal input by a source electrode of the main power amplifier; and the auxiliary power amplifier (103) is connected to the main power amplifier (102) in parallel, is connected to the envelope modulator (101) and is used for taking the envelope voltage received from the envelope modulator (101) as an operating voltage at an operating state and performing amplification processing on a signal input by a source electrode of the auxiliary power amplifier (103).