Invention Application
- Patent Title: TRANSCEIVER HAVING RADIO-FREQUENCY FRONT-END CIRCUIT, DEDICATED RADIO-FREQUENCY FRONT-END CIRCUIT, AND SWITCHABLE MATCHING CIRCUIT INTEGRATED IN SAME CHIP
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Application No.: US17864388Application Date: 2022-07-13
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Publication No.: US20220385330A1Publication Date: 2022-12-01
- Inventor: Wei-Chia Chan , Tse-Yu Chen , Hui-Hsien Liu , Jui-Lin Hsu , Chun-Wei Lin
- Applicant: MEDIATEK INC.
- Applicant Address: TW Hsin-Chu
- Assignee: MEDIATEK INC.
- Current Assignee: MEDIATEK INC.
- Current Assignee Address: TW Hsin-Chu
- Main IPC: H04B1/44
- IPC: H04B1/44

Abstract:
A transceiver includes: a radio-frequency (RF) front-end circuit; a dedicated RF front-end circuit; and a switchable matching circuit, integrated in a chip. The RF front-end circuit deals with communications of a first wireless standard, and the dedicated RF front-end circuit deals with communications of a second wireless standard. The switchable matching circuit provides impedance matching between the signal port and the RF front-end circuit when the RF front-end circuit is in operation, and provides impedance matching between the signal port and the dedicated RF front-end circuit when the dedicated RF front-end circuit is in operation, and includes: a first capacitive circuit coupled to the signal port; a first switch circuit coupled between the first capacitive circuit and the dedicated RF front-end circuit; a second capacitive circuit coupled to the dedicated RF front-end circuit; and a second switch circuit coupled to a second terminal of the second capacitive circuit.
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