POWER AMPLIFICATION CIRCUIT AND RADIO FREQUENCY SYSTEM

WIPO Patent Application WO/2023/216071

A1

The present application discloses a power amplification circuit and a radio frequency system. The circuit comprises a power amplification unit and a broadband promotion unit. The power amplification unit comprises a signal input port, a signal output port, a power transistor, and a first inductor. The power transistor is used for performing power amplification on radio frequency signals in a plurality of frequency bands. The broadband promotion unit adjusts parallel resonant frequency points of the power amplification unit to reduce the envelope impedance of the power amplification unit between a first target frequency and a second target frequency, the first target frequency is the maximum frequency difference of the plurality of frequency bands, and the second target frequency is the minimum frequency difference of the plurality of frequency bands. According to the present application, on the basis of not increasing an output internal matching circuit, the envelope impedance between the first target frequency and the second target frequency is reduced by means of the added broadband promotion unit, and the video bandwidth of the power amplification circuit and the DPD linearity of the broadband signals are improved.

SUN YIPING (CN)
HE CHUAN (CN)
SUN JIE (CN)

PCT/CN2022/091778

November 16, 2023

May 09, 2022

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HUAWEI TECH CO LTD (CN)

H03F3/189

CN107070417A	2017-08-18
CN111654249A	2020-09-11
CN203590161U	2014-05-07
JP2008219327A	2008-09-18

TDIP & PARTNERS (CN)

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