Invention Grant
- Patent Title: Multi-band radio frequency front-end circuit
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Application No.: US16149235Application Date: 2018-10-02
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Publication No.: US10554232B2Publication Date: 2020-02-04
- Inventor: Nadim Khlat , Marcus Granger-Jones
- Applicant: Qorvo US, Inc.
- Applicant Address: US NC Greensboro
- Assignee: Qorvo US, Inc.
- Current Assignee: Qorvo US, Inc.
- Current Assignee Address: US NC Greensboro
- Agency: Withrow & Terranova, P.L.L.C.
- Main IPC: H04M1/00
- IPC: H04M1/00 ; H04B1/00 ; H01Q1/24 ; H01Q1/52 ; H01Q5/50

Abstract:
Embodiments of the disclosure include a multi-band radio frequency (RF) front-end circuit. When a first antenna transmits an RF transmit signal in an RF transmit band, a second antenna may receive the RF transmit signal as an interference signal. The multi-band RF front-end circuit includes multiple receive filters for receiving an RF receive signal in multiple RF receive bands. A selected receive filter among the multiple receive filters is opportunistically reconfigured to help suppress the interference signal. Specifically, a bandpass bandwidth of the selected receive filter is expanded to include at least a portion of the RF spectrum of the interference signal. By doing so, it is possible to shunt the interference signal to a ground through the selected receive filter. As a result, it is possible to reduce an adverse impact of the interference signal to improve RF performance of the multi-band RF front-end circuit.
Public/Granted literature
- US20190036555A1 MULTI-BAND RADIO FREQUENCY FRONT-END CIRCUIT Public/Granted day:2019-01-31
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