发明授权
US08228138B2 Filter element, duplexer and electronic device having piezoelectric thin-film resonators stacked vertically
失效
具有垂直堆叠的压电薄膜谐振器的滤波器元件，双工器和电子器件
- 专利标题： Filter element, duplexer and electronic device having piezoelectric thin-film resonators stacked vertically
- 专利标题（中）： 具有垂直堆叠的压电薄膜谐振器的滤波器元件，双工器和电子器件
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申请号： US13177797申请日： 2011-07-07
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公开(公告)号： US08228138B2公开(公告)日： 2012-07-24
- 发明人: Motoaki Hara , Shinji Taniguchi , Takeshi Sakashita , Tsuyoshi Yokoyama , Masafumi Iwaki , Tokihiro Nishihara , Masanori Ueda
- 申请人： Motoaki Hara , Shinji Taniguchi , Takeshi Sakashita , Tsuyoshi Yokoyama , Masafumi Iwaki , Tokihiro Nishihara , Masanori Ueda
- 申请人地址： JP Tokyo
- 专利权人： Taiyo Yuden Co., Ltd.
- 当前专利权人： Taiyo Yuden Co., Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Chen Yoshimura LLP
- 主分类号： H03H9/54
- IPC分类号： H03H9/54 ; H03H9/70
摘要：
A filter element includes a plurality of multilayer filters that are connected in cascade, each of the plurality of multilayer filters including a plurality of piezoelectric thin-film resonators stacked vertically, each of the piezoelectric thin-film resonators including a piezoelectric film and a pair of first electrodes between which the piezoelectric film is interposed, and a capacitor connected between an input terminal of one of the plurality of multilayer filters of a preceding stage and an input terminal of another one of the plurality of multilayer filters of a following stage, exciting directions of piezoelectric thin-film resonators to which the input terminals of the multilayer filters of the preceding and following stages are connected being opposite to each other.
公开/授权文献
- US20110267155A1 FILTER ELEMENT, DUPLEXER AND ELECTRONIC DEVICE 公开/授权日：2011-11-03
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