Title:
MATCHING CIRCUIT, RADIO FREQUENCY FRONT END POWER AMPLIFICATION CIRCUIT, AND MOBILE COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/020014
Kind Code:
A1
Abstract:
The present application relates to a matching circuit, a radio frequency front end power amplification circuit, and a mobile communication device. The matching circuit is used for a radio frequency front end power amplifier, and comprises: a first impedance matcher, wherein at a first frequency, the impedance of the first impedance matcher is a first preset impedance; a first bandpass filter connected between a front end of the first impedance matcher and the ground, the first bandpass filter allowing a signal of the first frequency to pass through and suppressing at least one of a signal of a second frequency and a first harmonic signal of the signal of the first frequency, wherein the second frequency is lower than the first frequency; and a first wave trap connected between a rear end of the first impedance matcher and the ground to suppress a second harmonic signal of the signal of the first frequency.
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Inventors:
ZHOU JIAHUI (CN)
LONG HUA (CN)
LONG HUA (CN)
Application Number:
PCT/CN2022/090482
Publication Date:
February 23, 2023
Filing Date:
April 29, 2022
Export Citation:
Assignee:
LANSUS TECH INC (CN)
International Classes:
H03H7/38
Foreign References:
| CN113411062A | 2021-09-17 | |||
| CN106559048A | 2017-04-05 | |||
| CN108964621A | 2018-12-07 | |||
| CN109167582A | 2019-01-08 | |||
| US20200169224A1 | 2020-05-28 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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