发明授权
- 专利标题： Surface acoustic wave resonator, surface acoustic wave oscillator, and electronic apparatus
- 专利标题（中）： 表面声波谐振器，表面声波振荡器和电子设备
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申请号： US13162162申请日： 2011-06-16
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公开(公告)号： US09088263B2公开(公告)日： 2015-07-21
- 发明人: Kunihito Yamanaka
- 申请人： Kunihito Yamanaka
- 申请人地址： JP
- 专利权人： Seiko Epson Corporation
- 当前专利权人： Seiko Epson Corporation
- 当前专利权人地址： JP
- 代理机构： Harness, Dickey & Pierce, P.L.C.
- 优先权： JP2010-138495 20100617
- 主分类号： H03H9/25
- IPC分类号： H03H9/25 ; H03H9/125 ; H03B5/32 ; H03H9/02 ; H03H9/00
摘要：
A surface acoustic wave (SAW) resonator and a SAW oscillator and an electronic apparatus including the resonator are to be provided. A SAW resonator includes: an IDT exciting a SAW using a quartz crystal substrate of Euler angles (−1.5°≦φ≦1.5°, 117°≦θ≦142°, 42.79°≦|ψ|≦49.57°); one pair of reflection units arranged so as allow the IDT to be disposed therebetween; and grooves acquired by depressing the quartz crystal substrate located between electrode fingers. When a wavelength of the SAW is λ, and a depth of the grooves is G, “0.01λ≦G” is satisfied.
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