Title:
MATCHING CIRCUIT CAPABLE OF SWITCHING LOAD LINES, LOAD LINE SWITCHING METHOD, AND POWER AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2020/113865
Kind Code:
A1
Abstract:
A matching circuit capable of switching load lines, a load line switching method, and a power amplifier. The matching circuit performs matching with respect to an output impedance of the power amplifier amplifying an input signal and outputting the amplified signal. The matching circuit is characterized by comprising a filter circuit and a switch group for load-line selection. An output terminal of the filter circuit is connected to the switch group. The switch group comprises at least two independent switches. Each switch independently forms a signal line, and is configured to be controlled to turn on and off by means of an external control signal. The matching circuit employs the switch group consisting of at least two independent switches, and each independent switch forms a signal line connecting to a load, such that the matching circuit can simultaneously be connected to a plurality of loads. Moreover, the external control signal is used to control one or more independent switches in the switch group to be turned on and off so as to achieve switching between load lines. The matching circuit as a whole employs the switch group to achieve selection of and control over signal lines, has a simple structure, and adopts an easy control technique.
Inventors:
CAO XIUMEI (CN)
Application Number:
PCT/CN2019/080127
Publication Date:
June 11, 2020
Filing Date:
March 28, 2019
Export Citation:
Assignee:
CAO XIUMEI (CN)
International Classes:
H03F1/56; H03F3/213; H03F3/24
Foreign References:
| CN109379053A | 2019-02-22 | |||
| CN109639248A | 2019-04-16 | |||
| CN107453719A | 2017-12-08 | |||
| CN207399147U | 2018-05-22 | |||
| CN103368667A | 2013-10-23 | |||
| US4945317A | 1990-07-31 |
Attorney, Agent or Firm:
CHENGDU ZHIJISHI PATENT AGENCY (CN)
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