发明申请
- 专利标题： Surface acoustic wave device and communication terminal using the same
- 专利标题（中）： 表面声波装置和通信终端使用相同
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申请号： US11514229申请日： 2006-09-01
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公开(公告)号： US20070120623A1公开(公告)日： 2007-05-31
- 发明人: Kazuyuki Sakiyama , Kengo Asai , Atsushi Isobe , Kunio Matsumoto , Shinichi Fujiwara
- 申请人： Kazuyuki Sakiyama , Kengo Asai , Atsushi Isobe , Kunio Matsumoto , Shinichi Fujiwara
- 优先权： JP2005-344870 20051130
- 主分类号： H03H9/72
- IPC分类号： H03H9/72 ; H03H9/64
摘要：
A surface acoustic wave device in the present invention is provided with a piezoelectric substrate, a supporting substrate being jointed to the piezoelectric substrate and including a material different in expansion coefficient from the piezoelectric substrate and an interdigital electrode for exciting a surface acoustic wave, the electrode being arranged on the surface of the piezoelectric substrate. Either the interdigital electrode or the piezoelectric substrate is configured so that the interdigital electrode is 40% or more to 70% or less as long as the piezoelectric substrate in the direction to which a surface acoustic wave propagates.
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