Title:
RADIO FREQUENCY SWITCH CIRCUIT, WIRELESS TRANSCEIVING SYSTEM AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/231832
Kind Code:
A1
Abstract:
The present application discloses a radio frequency switch circuit, a wireless transceiving system, and an electronic device. The radio frequency switch circuit comprises: an output end of a power amplifier (PA) output matching network is connected to an antenna, and an input end of the PA output matching network is connected to a PA. A low-noise amplifier (LNA) input matching network comprises a first coupling device, a second coupling device and a switching device. The first coupling device and the second coupling device are coupled. A first end of the first coupling device is connected to the antenna, a second end of the first coupling device is connected to a first end of the switching device, and the second end of the first coupling device is connected to a first end of the LNA. A second end of the switching device is connected to a first end of the second coupling device, a second end of the second coupling device is grounded, and a third end of the second coupling device is connected to a second end of the LNA. A signal transmitting switching device is turned on, the first coupling device and the second coupling device are connected in series, and a signal receiving switching device is turned off. The output power of the PA output matching network is increased, thus increasing the working efficiency.
Inventors:
QIU QILIN (CN)
ZHANG MINGMING (CN)
ZHANG MINGMING (CN)
Application Number:
PCT/CN2023/095754
Publication Date:
December 07, 2023
Filing Date:
May 23, 2023
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H03F1/26
Foreign References:
| CN110932747A | 2020-03-27 | |||
| US20170194918A1 | 2017-07-06 | |||
| CN103546101A | 2014-01-29 | |||
| CN108063600A | 2018-05-22 | |||
| CN113517869A | 2021-10-19 | |||
| US20190074862A1 | 2019-03-07 | |||
| US20200389133A1 | 2020-12-10 |
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
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