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    • 1. 发明授权
    • Surface acoustic wave resonator, surface acoustic wave oscillator, and electronic instrument
    • 表面声波谐振器,表面声波振荡器和电子仪器
    • US08952596B2
    • 2015-02-10
    • US12713461
    • 2010-02-26
    • Kunihito Yamanaka
    • Kunihito Yamanaka
    • H03H9/25H03H9/145H03H9/02
    • H03H9/25H03B5/326H03H9/02551H03H9/0296H03H9/02992H03H9/14538H03H9/14594
    • A SAW resonator which, using a quartz crystal substrate with Euler angles (−1.5°≦φ≦1.5°, 117°≦θ≦142°, and 42.79°≦|105|≦49.57°, includes an IDT which excites a stop band upper end mode SAW, and grooves hollowed out of the substrate positioned between electrode fingers configuring the IDT, wherein, when the wavelength of the SAW is λ and the depth of the inter-electrode finger grooves is G, λ and G satisfy the relationship of 0.01λ≦G and wherein, when the line occupation rate of the IDT is η, the groove depth G and line occupation rate η satisfy the relationships of −2.0000×G/λ+0.7200≦η≦−2.5000×G/λ+0.7775 provided that 0.0100λ≦G≦0.0500λ, −3.5898×G/λ+0.7995≦η≦−2.5000+G/λ+0.7775 provided that 0.0500λ
    • 一种SAW谐振器,其使用具有欧拉角(-1.5°&amp; nlE; 1.5°,117°&nl;; Thetas; nlE; 142°和42.79°&nlE; | 105 |&amp; 49.57°的石英晶体衬底, 包括激发阻挡带上端模式SAW的IDT以及位于构成IDT的电极指之间的基板中的凹槽,其中,当SAW的波长为λ且电极间的指槽的深度为G ,λ和G满足0.01λ&nlE; G的关系,其中,当IDT的线占有率为eEgr时,沟槽深度G和线占有率eegr满足-2.0000×G /λ+ 0.7200&nlE的关系 ;&eegr;&nlE; -2.5000×G /λ+ 0.7775,条件是0.0100λ&NlE; G&nlE;0.0500λ,-3.5898×G /λ+ 0.7995&nlE;&eegr&nlE; -2.5000 + G /λ+ 0.7775,条件是0.0500λ< G&nlE;0.0695λ。
    • 2. 发明授权
    • Surface acoustic wave resonator, surface acoustic wave oscillator, and electronic apparatus
    • 表面声波谐振器,表面声波振荡器和电子设备
    • US08928432B2
    • 2015-01-06
    • US13212714
    • 2011-08-18
    • Takuya OwakiKeigo IizawaKunihito Yamanaka
    • Takuya OwakiKeigo IizawaKunihito Yamanaka
    • H03H9/25H03H9/64H03B5/32H03H9/02H03H9/05H03H9/145
    • H03H9/02551H03B5/326H03H9/02661H03H9/0542H03H9/14538
    • A surface acoustic wave resonator includes: an IDT which is disposed on a quartz substrate with Euler angles of (−1°≦φ≦1°, 117°≦θ≦142°, 42.79°≦|ψ|≦49.57°), which is made of Al or alloy including Al as a main component and which excites a surface acoustic wave in an upper mode of a stop band; and an inter-electrode-finger groove which is formed by recessing the quartz substrate between electrode fingers which form the IDT. Here, the following expression is satisfied: 0.01λ≦G  (1), where λ represents a wavelength of the surface acoustic wave and G represents a depth of the inter-electrode-finger groove. The depth G of the inter-electrode-finger groove and a line occupancy η of the IDT satisfy the following expression: - 2.5 × G λ + 0.675 ≦ η ≦ - 2.5 × G λ + 0.775 ( 5 ) and a number of pairs N of the electrode fingers in the IDT is in the range of the following expression: 160≦N≦220  (19).
    • 表面声波谐振器包括:设置在石英基板上的IDT,欧拉角为(-1°&amp; nlE;&amp; nlE; 1°,117°&nlE;&Thetas;&nlE; 142°,42.79°&nlE; |ψ |和nlE; 49.57°),其由Al或包含Al作为主要成分的合金制成,并且在阻带的上部模式中激发表面声波; 以及通过在形成IDT的电极指之间使石英衬底凹陷而形成的电极间指状槽。 这里,满足以下表达式:0.01λ&nlE; G(1)其中λ表示声表面波的波长,G表示电极间指槽的深度。 电极指槽的深度G和线占有率eegr; 的IDT满足以下表达式: - 2.5×Gλ+ 0.675&nlE; &eegr &nlE; - 2.5×Gλ+ 0.775(5),IDT中的电极指数对N数在下式的范围内:160&nlE; N&nlE; 220(19)。
    • 6. 发明授权
    • Surface acoustic wave device, electronic apparatus, and sensor apparatus
    • 声表面波装置,电子仪器和传感器装置
    • US08723393B2
    • 2014-05-13
    • US13223363
    • 2011-09-01
    • Kunihito Yamanaka
    • Kunihito Yamanaka
    • H03H9/145H03H9/25H03H9/19H03H9/00
    • H03H9/02551H03H9/02661H03H9/02834H03H9/14594
    • A SAW device 11 has an IDT which is provided on the principal surface of a quartz crystal substrate 12 having Euler angles (−1.5°≦φ≦1.5°, 117°≦θ≦142°, 42.79°≦|ψ|≦49.57°) and excites a SAW in a stopband upper end mode, and a pair of reflectors which are arranged on both sides of the IDT. Inter-electrode-finger grooves are recessed between the electrode fingers of the IDT, and inter-conductor-strip grooves are recessed between the conductor strips of the reflectors. The wavelength λ of the SAW and the depth G of the inter-electrode-finger grooves satisfy 0.01λ≦G. An IDT line occupancy η and the depth G of the inter-electrode-finger grooves satisfy a predetermined relational expression. The IDT line occupancy η and a reflector line occupancy ηr satisfy the relationship η
    • SAW器件11具有设置在具有欧拉角(-1.5°&amp; nlE; 1.5°,117°&amp; nlE; 1.5m)的石英晶体基板12的主表面上的IDT, ; |ψ|&nlE; 49.57°)并激励阻带上端模式的SAW,以及布置在IDT两侧的一对反射器。 电极指状槽在IDT的电极指之间凹陷,并且导体间条状凹槽凹陷在反射器的导体条之间。 SAW的波长λ和电极指间槽的深度G满足0.01λ&nlE; G。 IDT线路占用率 并且电极指间槽的深度G满足预定的关系式。 IDT线路占用率 并且反射器线占有率满足关系&eegr; <&eegr; r。 因此,能够同时实现工作温度范围内的优异的频率温度特性和高Q值。