发明申请
- 专利标题： High-frequency switching circuit, high-frequency module, and wireless communications device
- 专利标题（中）： 高频开关电路，高频模块和无线通信设备
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申请号： US11067520申请日： 2005-02-25
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公开(公告)号： US20050197095A1公开(公告)日： 2005-09-08
- 发明人: Katsuro Nakamata , Hiroshi Ninomiya , Masafumi Horiuchi , Shinji Isoyama , Tooru Takahashi
- 申请人： Katsuro Nakamata , Hiroshi Ninomiya , Masafumi Horiuchi , Shinji Isoyama , Tooru Takahashi
- 专利权人： KYOCERA CORPORATION
- 当前专利权人： KYOCERA CORPORATION
- 优先权： JP2004-54530 20040227; JP2004-158431 20040527; JP2004-158432 20040527; JP2004-287422 20040930
- 主分类号： H03H11/34
- IPC分类号： H03H11/34 ; H04B1/40 ; H04B1/44 ; H04B1/50 ; H04Q7/20
摘要：
The present invention provides a high-frequency switching circuit comprising: two or more high-frequency switches SW1 and SW2 provided correspondingly to a plurality of communication systems having mutually different frequency bands; and a control circuit DEC1 adapted to control the switching of the two or more high-frequency switches SW1 and SW2, in which a common antenna terminal ANT3 and common terminals ANT1 and ANT2 of the respective high-frequency switches SW1 and SW2 are connected via a matching circuit MAT1 having a filtering function capable of allowing passage of direct current. When one path of the high-frequency switch SW1 is turned on, the other paths of the high-frequency switch SW1 and all paths of the high-frequency switch SW2 can be turned off.
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