发明授权
- 专利标题: Saw element, saw device and branching filter
- 专利标题(中): 锯片,锯装置和分支过滤器
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申请号: US10436438申请日: 2003-05-13
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公开(公告)号: US06946772B2公开(公告)日: 2005-09-20
- 发明人: Kenji Inoue , Masahiro Nakano , Katsuo Sato
- 申请人: Kenji Inoue , Masahiro Nakano , Katsuo Sato
- 申请人地址: JP Tokyo
- 专利权人: TDK Corporation
- 当前专利权人: TDK Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: McGinn & Gibb, PLLC
- 优先权: JP2002-138052 20020514
- 主分类号: H03H9/10
- IPC分类号: H03H9/10 ; H03H9/64 ; H03H9/72 ; H03H9/25
摘要:
An SAW element 11 comprises a first wiring section 20 formed between an input terminal 18 and an output terminal 19, a plurality of first SAW resonators 15 which are located in serial to the first wiring section 20, a plurality of second SAW resonators 16 which are located in serial to the first wiring section 20 at the side of the input terminal 18 or at the side of the output terminal 19 with respect to the first SAW resonators 15, a plurality of second wiring section 22 which are formed between an intermediate point of the second SAW resonators 16 each other in the first wiring section 20 and a reference voltage electrode 21, and a plurality of third SAW resonators 17 which are located in the second wiring section 22, respectively, and which have anti-resonant frequencies corresponding with resonant frequencies of the second SAW resonators 16.
公开/授权文献
- US20040075362A1 Saw element, saw device and branching filter 公开/授权日:2004-04-22