发明授权
- 专利标题： Surface-acoustic-wave device having an improved pass-band characteristic and an improved degree of freedom for setting input and output impedances
- 专利标题（中）： 表面声波装置具有改善的通带特性和提高设定输入和输出阻抗的自由度
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申请号： US09363751申请日： 1999-07-30
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公开(公告)号： US06271739B1公开(公告)日： 2001-08-07
- 发明人: Masanori Ueda , Gou Endoh , Osamu Kawachi , Yoshiro Fujiwara
- 申请人： Masanori Ueda , Gou Endoh , Osamu Kawachi , Yoshiro Fujiwara
- 优先权： JP8-133675 19960528
- 主分类号： H03H964
- IPC分类号： H03H964
摘要：
A surface acoustic wave device supported by a package body. At least one surface acoustic wave element having interdigital electrodes disposed on a propagation path of a surface acoustic wave on the piezoelectric substrate. These interdigital electrodes include an input-side interdigital electrode connected to a ground pad on the package body and an output-side interdigital electrode connected to another ground pad on the package body.