发明授权
- 专利标题： Surface acoustic wave device using a leaky surface acoustic wave with an optimized cut angle of a piezoelectric substrate
- 专利标题（中）： 使用具有压电基板的最佳切割角的泄漏表面声波的表面声波装置
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申请号： US09448171申请日： 1999-11-24
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公开(公告)号： US06317015B1公开(公告)日： 2001-11-13
- 发明人: Masanori Ueda , Osamu Kawachi , Gou Endoh , Osamu Ikata , Ken-ya Hashimoto , Masatsune Yamaguchi
- 申请人： Masanori Ueda , Osamu Kawachi , Gou Endoh , Osamu Ikata , Ken-ya Hashimoto , Masatsune Yamaguchi
- 优先权： JP7-265466 19951013; JP8-179551 19960709
- 主分类号： H03H964
- IPC分类号： H03H964
摘要：
A surface acoustic wave device includes a piezoelectric substrate of a single crystal LiTaO3 and an electrode pattern provided on the piezoelectric substrate. The electrode pattern contains Al as a primary component and has a thickness in a range of 0.03-0.15 times a wavelength of a surface acoustic wave excited on the piezoelectric substrate. The piezoelectric substrate has an orientation rotated about an X-axis thereof from a Y-axis thereof toward a Z-axis thereof, with a rotational angle of 38-46°.