Invention Grant
- Patent Title: Radio frequency circuit, radio-frequency front-end circuit, and communication device
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Application No.: US16126542Application Date: 2018-09-10
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Publication No.: US10707909B2Publication Date: 2020-07-07
- Inventor: Daisuke Watanabe
- Applicant: Murata Manufacturing Co., Ltd.
- Applicant Address: JP Kyoto
- Assignee: MURATA MANUFACTURING CO., LTD.
- Current Assignee: MURATA MANUFACTURING CO., LTD.
- Current Assignee Address: JP Kyoto
- Agency: Pearne & Gordon LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@28a3935
- Main IPC: H01Q1/24
- IPC: H01Q1/24 ; H04B1/18 ; H01Q5/328 ; H03F3/189 ; H01Q15/00 ; H03F3/195 ; H03F3/24 ; H04B1/04 ; H04B1/48 ; H01Q1/50

Abstract:
A radio frequency circuit includes a switching circuit, an amplifying circuit, and a potential stabilizing circuit. The switching circuit includes a switch disposed on a path connecting a first terminal, to which a radio-frequency signal is input, to a second terminal, from which the radio-frequency signal is output, a first capacitor disposed between the first terminal and the switch, and a second capacitor disposed between the switch and the second terminal. The amplifying circuit includes an amplifier disposed between the switching circuit and the second terminal, a third capacitor disposed between the switching circuit and the amplifier, and a fourth capacitor disposed between the amplifier and the second terminal. The potential stabilizing circuit is connected to a first node which is located between the switching circuit and the amplifying circuit and which is located on a path connecting the second capacitor to the third capacitor.
Public/Granted literature
- US20190081651A1 RADIO FREQUENCY CIRCUIT, RADIO-FREQUENCY FRONT-END CIRCUIT, AND COMMUNICATION DEVICE Public/Granted day:2019-03-14
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