Invention Grant
- Patent Title: Multiplexer, transmission device, reception device, high-frequency front end circuit, communication device and impedance matching method for multiplexer
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Application No.: US16221772Application Date: 2018-12-17
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Publication No.: US10541674B2Publication Date: 2020-01-21
- Inventor: Yuichi Takamine
- 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: Keating & Bennett, LLP
- Priority: JP2015-127039 20150624
- Main IPC: H04B1/10
- IPC: H04B1/10 ; H03H9/72 ; H03H7/38 ; H03H9/145 ; H03H9/64 ; H04B1/04 ; H04B1/18 ; H04B1/52 ; H03H9/02 ; H04B1/00 ; H03H9/00
Abstract:
A multiplexer includes elastic wave filters with different pass bands, a common terminal to which an inductance element is serially connected in a connection path between an antenna element and the common terminal; and an inductance element. Among the elastic wave filters, a reception input terminal of a first reception filter is connected to the common terminal via the inductance element and is connected to a parallel resonator. Transmission output terminals of transmission filters and a reception input terminal of a second reception filter are connected to the common terminal, are connected to series resonators, and are not connected to parallel resonators.
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