发明授权
- 专利标题： Duplexer and ladder type filter
- 专利标题（中）： 双工器和梯形过滤器
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申请号： US11500486申请日： 2006-08-08
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公开(公告)号： US07573354B2公开(公告)日： 2009-08-11
- 发明人: Tokihiro Nishihara , Shogo Inoue , Takashi Matsuda , Masanori Ueda , Masafumi Iwaki , Shinji Taniguchi , Go Endo
- 申请人： Tokihiro Nishihara , Shogo Inoue , Takashi Matsuda , Masanori Ueda , Masafumi Iwaki , Shinji Taniguchi , Go Endo
- 申请人地址： JP Yokohama JP Kawasaki
- 专利权人： Fujitsu Media Devices Limited,Fujitsu Limited
- 当前专利权人： Fujitsu Media Devices Limited,Fujitsu Limited
- 当前专利权人地址： JP Yokohama JP Kawasaki
- 代理机构： Arent Fox LLP
- 优先权： JP2005-229165 20050808; JP2006-130662 20060509
- 主分类号： H03H9/70
- IPC分类号： H03H9/70 ; H03H9/72 ; H03H9/54 ; H03H9/64
摘要：
A duplexer includes an antenna terminal, a first filter connected to the antenna terminal, and a second filter connected to the antenna terminal. At least one of the first filter and the second filter is a ladder type filter in which a parallel resonator and multiple series resonators are included, one or more first inductors are respectively connected in parallel with one or more series resonators out of the multiple series resonators, and one of the one or more first inductors is connected in parallel with one of the multiple series resonators that is arranged closest to the antenna terminal.
公开/授权文献
- US20070030096A1 Duplexer and ladder type filter 公开/授权日：2007-02-08
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