COUPLING CIRCUIT AND ELECTRONIC DEVICE FOR 4G FULL-BAND POWER AMPLIFIER

WIPO Patent Application WO/2023/040472

A1

Embodiments of the present invention disclose a coupling circuit for 4G full-band power amplifier, comprising a directional coupler, a coupling signal output port, a low-frequency coupling path network, a medium-high-frequency coupling path network, a first handover switch and a second handover switch. The first handover switch is used to selectively connect a coupling end of the directional coupler to an input end of the low-frequency coupling path network or an input end of the medium-high-frequency coupling path network. The second handover switch is used to connect the coupling signal output port to an output port of the low-frequency coupling path network when the coupling port is connected to the input port of the low-frequency coupling path network, and to connect the coupling signal output port to an output end of the medium-high-frequency coupling path network when the coupling end is connected to the input end of the medium-high-frequency coupling path network. Thus, the coupling circuit can be selectively operated in the low-frequency band or the middle-high-frequency band.

ZHOU JIAHUI (CN)
GUO JIASHUAI (CN)

PCT/CN2022/108111

March 23, 2023

July 27, 2022

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LANSUS TECH INC (CN)

H03F1/48; H03F3/195; H03F3/213

CN113872532A	2021-12-31
CN113162646A	2021-07-23
CN109560360A	2019-04-02
CN106656076A	2017-05-10
CN107210507A	2017-09-26
CN107404294A	2017-11-28

SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)

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