发明授权
- 专利标题： Surface acoustic wave device having a langasite single crystal substrate
- 专利标题（中）： 表面声波装置，具有朗氏单晶基板
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申请号： US130926申请日： 1998-08-06
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公开(公告)号： US6163099A公开(公告)日： 2000-12-19
- 发明人: Michio Kadota , Makoto Kumatoriya
- 申请人： Michio Kadota , Makoto Kumatoriya
- 申请人地址： JPX Kyoto
- 专利权人： Murata Manufacturing Co., Ltd.
- 当前专利权人： Murata Manufacturing Co., Ltd.
- 当前专利权人地址： JPX Kyoto
- 优先权： JPX9-231204 19970827; JPX10-011498 19980123
- 主分类号： H03H9/25
- IPC分类号： H03H9/25 ; H03H9/02 ; H03H9/15
摘要：
A surface acoustic wave device includes a piezoelectric substrate made of a Langasite single crystal and at least one interdigital transducer including a pair of comb-shaped electrodes which are interdigitated with each other and are in contact with the piezoelectric substrate. The piezoelectric substrate has a Euler angle of approximately (0.degree., 130.degree. to 170.degree., 23.degree. to 30.degree.), whereby the surface acoustic wave device has an excellent TCD and also has a large K.sup.2 value.
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