Title:
HIGH-FREQUENCY FRONT-END CIRCUIT AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/061782
Kind Code:
A1
Abstract:
A high-frequency front-end circuit (1) is provided with a switch circuit (10), duplixers (20, 30) and a capacitor (C), the switch circuit (10) having a main switch (SW1) for switching a connection between a common terminal (111) and a selection terminal (112), a sub-switch (SW1g) for switching a connection between the selection terminal (112) and ground by exclusive on/off with the main switch (SW1), a main switch (SW2) for switching a connection between the common terminal (111) and a selection terminal (113), and a sub-switch (SW2g) for switching a connection between the selection terminal (113) and ground by exclusive on/off with the main switch (SW2), there being switching between a first connection state in which only one of the main switches (SW1, SW2) is turned on and a second connection state in which both are turned on, the capacitor (C) connecting the selection terminal (112) and the selection terminal (113) together.
Inventors:
NOSAKA KOJI (JP)
Application Number:
PCT/JP2017/033141
Publication Date:
April 05, 2018
Filing Date:
September 13, 2017
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H04B1/00; H04B1/52
Domestic Patent References:
| WO2010053131A1 | 2010-05-14 |
Foreign References:
| JP2011041291A | 2011-02-24 | |||
| JPH1093473A | 1998-04-10 | |||
| JP2015029233A | 2015-02-12 |
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (JP)
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