Invention Grant
- Patent Title: Front end circuit
- Patent Title (中): 前端电路
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Application No.: US15173815Application Date: 2016-06-06
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Publication No.: US09577691B2Publication Date: 2017-02-21
- Inventor: Kunitoshi Hanaoka
- 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: JP2013-270770 20131227
- Main IPC: H04B1/44
- IPC: H04B1/44 ; H04B1/18 ; H04B1/16 ; H04B1/00 ; H04L5/14

Abstract:
A front end circuit includes a switch including a common terminal and a plurality of individual terminals, in which at least two kinds of reception signals of different frequency bands are input to the common terminal, and in which one of the at least two kinds of reception signals is output to an individual terminal selected from the plurality of individual terminals, and in which a non-selected terminal is grounded, and a balun including a first terminal and a second terminal defining unbalanced ports as well as a third terminal and a fourth terminal defining balanced ports. The first individual terminal of the switch is indirectly connected to the first terminal of the balun and the second individual terminal of the switch is indirectly connected to the second terminal of the balun. The at least two kinds of reception signals are output in a balanced mode from the third terminal and the fourth terminal of the balun.
Public/Granted literature
- US20160285490A1 FRONT END CIRCUIT Public/Granted day:2016-09-29
Information query