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1. 发明申请

US20070229191A1 SURFACE ACOUSTIC WAVE ELEMENT AND SURFACE ACOUSTIC WAVE DEVICE COMPRISING THE ELEMENT 审中-公开
标题翻译：表面声波元件和包含元件的表面声波装置
公开(公告)号：US20070229191A1
公开(公告)日：2007-10-04
申请号：US11681563
申请日：2007-03-02
申请人： Masahiro Yamaki , Yoshikazu Kihara , Eiko Wakata
发明人： Masahiro Yamaki , Yoshikazu Kihara , Eiko Wakata
IPC分类号： H03H9/64
CPC分类号： H03H9/725 , H03H9/02818 , H03H9/0576 , H03H9/6483 , H03H9/72
摘要： A surface acoustic wave element comprises a first surface acoustic wave element unit formed on a surface of a piezo-electric substrate, and a second surface acoustic wave element unit formed on the surface of said piezo-electric substrate adjacent to said first surface acoustic wave element unit. Each of said first surface acoustic wave element unit and said second surface acoustic wave element unit includes a signal input terminal, a signal output terminal, a ground terminal, a signal path for coupling said signal input terminal to the signal output terminal, series arm resonators connected in series on said signal path, a branch line branched from said signal path to said ground terminal, and parallel arm resonators connected on said branch line. The signal path of at least one of the first surface acoustic wave element unit and second surface acoustic wave element unit is extended outside of the center line of said surface acoustic wave element unit.
摘要翻译：表面声波元件包括形成在压电基板的表面上的第一表面声波元件单元和形成在所述压电基板的与所述第一声表面波元件相邻的表面上的第二声表面波元件单元单元。所述第一表面声波元件单元和所述第二表面声波元件单元中的每一个包括信号输入端子，信号输出端子，接地端子，用于将所述信号输入端子耦合到信号输出端子的信号路径，串联臂谐振器在所述信号路径上串联连接，从所述信号路径分支到所述接地端子的分支线以及连接在所述分支线路上的并联臂谐振器。第一表面声波元件单元和第二声表面波元件单元中的至少一个的信号路径延伸到所述表面声波元件单元的中心线的外侧。

2. 发明申请

US20070018533A1 SURFACE ACOUSTIC WAVE DEVICE 有权
标题翻译：表面声波设备
公开(公告)号：US20070018533A1
公开(公告)日：2007-01-25
申请号：US11457960
申请日：2006-07-17
申请人： Yoshikazu Kihara , Katsunori Osanai , Yukio Hirokawa , Masaki Sobu
发明人： Yoshikazu Kihara , Katsunori Osanai , Yukio Hirokawa , Masaki Sobu
IPC分类号： H03H9/25
CPC分类号： H03H9/02559 , H03H9/02921
摘要： A SAW device comprises a single crystal piezo-electric strate (made, for example, of LiTaO3 or LiNbO3), and an interdigital transducer (IDT) formed of a material mainly containing Al and disposed on the piezo-electric substrate. The piezo-electric strate contains an additive (for example, Fe, Mn, Cu, Ti), and an orientation rotated by an angle in a range of 42° to 48°re preferably 46°±0.3°) from a Y-axis toward a Z-axis about an axis. The IDT presents a normalized thickness h/λ (h: thickness electrode, and λ: spacing between digits of the IDT) of 7% to 11%. A more appropriate substrate cut angle can be shown for the device which employs a piezo-electric substrate containing an additive, to improve the electric characteristics thereof.
摘要翻译： SAW器件包括单晶压电栅（例如由LiTaO 3 N 3或LiNbO 3 3制成）和由材料形成的叉指式换能器（IDT）主要含有Al并设置在压电基板上。压电栅格包含添加剂（例如Fe，Mn，Cu，Ti），并且从Y轴方向旋转角度在42°至48°，优选46°±0.3°的范围内的取向）朝向围绕轴的Z轴。 IDT呈现出7％至11％的标准化厚度h /λ（h：厚度电极和λ：IDT的位数间隔）。对于采用含有添加剂的压电基板的装置，可以示出更合适的基板切割角度，以改善其电特性。

3. 发明授权

US07411333B2 Surface acoustic wave device 有权
标题翻译：表面声波装置
公开(公告)号：US07411333B2
公开(公告)日：2008-08-12
申请号：US11457960
申请日：2006-07-17
申请人： Yoshikazu Kihara , Katsunori Osanai , Yukio Hirokawa , Masaki Sobu
发明人： Yoshikazu Kihara , Katsunori Osanai , Yukio Hirokawa , Masaki Sobu
IPC分类号： H03H9/145 , H03H9/25 , H01L41/047
CPC分类号： H03H9/02559 , H03H9/02921
摘要： A SAW device comprises a single crystal piezo-electric strate (made, for example, of LiTaO3 or LiNbO3), and an interdigital transducer (IDT) formed of a material mainly containing Al and disposed on the piezo-electric substrate. The piezo-electric strate contains an additive (for example, Fe, Mn, Cu, Ti), and an orientation rotated by an angle in a range of 42° to 48° (more preferably 46°±0.3°) from a Y-axis toward a Z-axis about an X-axis. The IDT presents a normalized thickness h/λ (h: thickness of electrode, and λ: spacing between digits of the IDT) of 7% to 11%. A more appropriate substrate cut angle can be shown for the SAW device which employs a piezo-electric substrate containing an additive, to improve the electric characteristics thereof.
摘要翻译： SAW器件包括单晶压电栅（例如由LiTaO 3 N 3或LiNbO 3 3制成）和由材料形成的叉指式换能器（IDT）主要含有Al并设置在压电基板上。压电石英片含有添加剂（例如Fe，Mn，Cu，Ti），与Y方向旋转角度在42°〜48°（更优选46°±0.3°）的范围内的取向，轴绕Z轴绕X轴。 IDT呈现7％至11％的标准化厚度h /λ（h：电极厚度和λ：IDT的位数之间的间距）。对于采用含有添加剂的压电基板的SAW器件，可以示出更合适的衬底切割角度，以改善其电特性。

4. 发明授权

US06424239B1 Differential surface acoustic wave filter 有权
标题翻译：差分声表面波滤波器
公开(公告)号：US06424239B1
公开(公告)日：2002-07-23
申请号：US09580218
申请日：2000-05-26
申请人： Hisanori Ehara , Kazushige Noguchi , Yoshikazu Kihara
发明人： Hisanori Ehara , Kazushige Noguchi , Yoshikazu Kihara
IPC分类号： H03H964
CPC分类号： H03H9/0042
摘要： In a differential surface acoustic wave resonator, when an unbalanced electric signal is inputted between an input terminal 301 and an output terminal connected to a ground potential, this electric signal is inputted to two-terminal-pair surface acoustic wave resonators 351 and 352. The electric signal inputted to the two-terminal-pair surface acoustic wave resonator 351 is converted into a surface acoustic wave, and thereafter it is again converted into an electric signal to be outputted to a two-terminal-pair surface acoustic wave resonator 353. The electric signal inputted to the two-terminal-pair surface acoustic wave resonator 353 is converted into a surface acoustic wave, and thereafter it is again converted into an electric signal to be outputted from an output terminal 302 of the differential surface acoustic wave filter as a balanced signal. On the other hand, the electric signal inputted to the two-terminal-pair surface acoustic wave resonator 352 is converted into a surface acoustic wave, and thereafter it is again converted into an electric signal to be outputted to a two-terminal-pair surface acoustic wave resonator 354. The electric signal inputted to the two-terminal-pair surface acoustic wave resonator 354 is converted into a surface acoustic wave, and thereafter it is again converted into an electric signal to be outputted from an output terminal 303 of the differential surface acoustic wave filter as a balanced signal. Here, in the respective two-terminal-pair surface acoustic wave resonators 351 to 354, the phase of the electric signal to be inputted is substantially 180° different from that of the electric signal to be outputted. The balanced signals having the same phase and the same amplitude are outputted from the two output terminals of the differential surface acoustic wave filter.
摘要翻译：在差分表面声波谐振器中，当在输入端子301和连接到地电位的输出端子之间输入不平衡电信号时，该电信号被输入到两端对声表面波谐振器351和352。输入到两端对声表面波谐振器351的电信号被转换为表面声波，然后再次转换为电信号以输出到两端对声表面波谐振器353. 输入到两端对声表面波谐振器353的电信号被转换为表面声波，然后再次转换为从差动表面声波滤波器的输出端子302输出的电信号作为平衡信号。另一方面，输入到两端对声表面波谐振器352的电信号被转换为表面声波，然后再次转换为电信号以输出到两端对表面输入到两端对声表面波谐振器354的电信号被转换成表面声波，之后再次转换为从差分的输出端子303输出的电信号表面声波滤波器作为平衡信号。这里，在各个双端子对表面声波谐振器351〜354中，输入的电信号的相位与输出的电信号的相位大致相差180°。从差动表面声波滤波器的两个输出端子输出具有相同相位和幅度相同的平衡信号。

5. 发明申请

US20050046512A1 Demultiplexer 审中-公开
标题翻译：解复用器
公开(公告)号：US20050046512A1
公开(公告)日：2005-03-03
申请号：US10885015
申请日：2004-07-07
申请人： Yoshikazu Kihara , Masahiro Yamaki
发明人： Yoshikazu Kihara , Masahiro Yamaki
IPC分类号： H03H9/72 , H03H9/64
CPC分类号： H03H9/725
摘要： A demultiplexer includes a common terminal; a plurality of surface acoustic wave filters formed of surface acoustic wave devices, having signal terminals connected to the common terminal and having pass bands different from one another; and a phase shifter formed of a lumped constant element disposed between the common terminal and predetermined one of the surface acoustic wave filters having input impedance exerting influence on matching between impedance in the pass band of the predetermined surface acoustic wave filter viewed from the common terminal side and impedance viewed from the signal terminal side.
摘要翻译：解复用器包括公共终端; 由表面声波装置形成的多个表面声波滤波器，其信号端子连接到公共端子并且具有彼此不同的通带; 以及由公共端子和预定的声表面波滤波器之间的集总常数元件形成的移相器，其具有对从公共端子侧观察的预定表面声波滤波器的通带中的阻抗匹配的输入阻抗和从信号端子侧观察的阻抗。

6. 发明授权

US06677835B2 Saw filter with an attenuation pole including a band-pass ladder type of saw filter having a saw resonator 有权
标题翻译：具有衰减极的锯片滤波器，包括具有锯形谐振器的带通梯形锯齿形滤波器
公开(公告)号：US06677835B2
公开(公告)日：2004-01-13
申请号：US09987988
申请日：2001-11-16
申请人： Kazushige Noguchi , Satoshi Terada , Tomokazu Komazaki , Yoshikazu Kihara , Yoshiaki Fujita
发明人： Kazushige Noguchi , Satoshi Terada , Tomokazu Komazaki , Yoshikazu Kihara , Yoshiaki Fujita
IPC分类号： H03H964
CPC分类号： H03H9/6483
摘要： A polar SAW (Surface Acoustic Wave) filter includes a band-pass ladder type SAW filter having a SAW resonator. A two-terminal pair circuit is serially connected to the band-pass ladder type SAW filter and includes a plurality of inductors. The polar SAW filter has attenuation poles in each of the higher-frequency and lower-frequency attenuation ranges of a pass band.
摘要翻译：极性SAW（表面声波）滤波器包括具有SAW谐振器的带通梯形SAW滤波器。两端子对电路串联连接到带通梯型SAW滤波器并且包括多个电感器。极化SAW滤波器在通带的高频和低频衰减范围的每一个中具有衰减极点。

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