Invention Grant
US08868008B2 Switch circuit for controlling a connection between an antenna and an external circuit
有权
用于控制天线和外部电路之间的连接的开关电路
- Patent Title: Switch circuit for controlling a connection between an antenna and an external circuit
- Patent Title (中): 用于控制天线和外部电路之间的连接的开关电路
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Application No.: US13180751Application Date: 2011-07-12
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Publication No.: US08868008B2Publication Date: 2014-10-21
- Inventor: Satoshi Tanaka , Tadashi Matsuoka , Masanori Iijima , Yasushi Shigeno
- Applicant: Satoshi Tanaka , Tadashi Matsuoka , Masanori Iijima , Yasushi Shigeno
- Applicant Address: JP Kyoto
- Assignee: Murata Manufacturing Co., Ltd.
- Current Assignee: Murata Manufacturing Co., Ltd.
- Current Assignee Address: JP Kyoto
- Agency: Mattingly & Malur, PC
- Priority: JP2010-221097 20100930
- Main IPC: H04B1/44
- IPC: H04B1/44 ; H03K17/10 ; H03K17/693 ; H03K17/62 ; H03K17/06
Abstract:
A switch circuit with a unit capable of improving a margin voltage without using a negative bias generation circuit is provided. A switch comprising an N-type MOSFET is used for a switch passing a signal to an antenna and a switch comprising a P-type MOSFET is used for a shunt switch grounding a signal. A common control signal is input to the gate terminal of the MOSFET constituting each switch. The inverted signal of this control signal is coupled to a ground terminal of the switch, and thus the potential of the gate terminal of each MOSFET can be set to the ground voltage.
Public/Granted literature
- US20120081262A1 SWITCH CIRCUIT, SEMICONDUCTOR DEVICE, AND PORTABLE WIRELESS DEVICE Public/Granted day:2012-04-05
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