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1. (WO2018137244) APPARATUS AND METHOD FOR IMPROVING EFFICIENCY OF POWER AMPLIFIER

Pub. No.:    WO/2018/137244    International Application No.:    PCT/CN2017/072752
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Fri Jan 27 00:59:59 CET 2017
IPC: H03F 1/32
Applicants: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
WANG, Zhancang
Inventors: WANG, Zhancang
Title: APPARATUS AND METHOD FOR IMPROVING EFFICIENCY OF POWER AMPLIFIER
Abstract:
A method and device for improving the efficiency of a power amplifier(104). An apparatus(100) comprising: a harmonic generator(101), configured to generate one or more harmonic according to an output signal of the power amplifier(104); a harmonic feedback device(102), configured to inject the harmonic generated by the harmonic generator(101) to an input terminal of the power amplifier(104); and a harmonic eliminator(103), configured to eliminate the harmonic in the output signal of the power amplifier(104). The efficiency of power amplifier(104) can be improved without degrading the linearity.