Invention Grant
- Patent Title: Radio frequency circuit, radio frequency front end circuit, and communication apparatus
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Application No.: US16879165Application Date: 2020-05-20
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Publication No.: US11043930B2Publication Date: 2021-06-22
- Inventor: Hirotsugu Mori
- 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: JPJP2017-225872 20171124
- Main IPC: H04B1/38
- IPC: H04B1/38 ; H03H7/03 ; H03H7/01 ; H03H7/46 ; H04B1/40

Abstract:
A radio frequency circuit includes a filter of a Band A, a filter of a Band B, a filter of a Band C, a low pass filter that is connected between a common terminal and a first terminal, a high pass filter that is connected between the common terminal and a second terminal, and an impedance variable circuit. The frequency interval between the Band A and the Band B is smaller than the frequency interval between the Band A and the Band C. In CA of the Band A and the Band B, the filter is connected to the first terminal, the filter is connected to the second terminal, and an impedance of the low pass filter when viewed from the first terminal and an impedance of the high pass filter when viewed from the second terminal have a complex conjugate relationship.
Public/Granted literature
- US20200280296A1 RADIO FREQUENCY CIRCUIT, RADIO FREQUENCY FRONT END CIRCUIT, AND COMMUNICATION APPARATUS Public/Granted day:2020-09-03
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