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1. 发明授权

US09887343B2 Acoustic wave element 有权
公开(公告)号：US09887343B2
公开(公告)日：2018-02-06
申请号：US14555125
申请日：2014-11-26
申请人： TAIYO YUDEN CO., LTD.
发明人： Jun Tsutsumi , Masafumi Iwaki , Kentaro Nakamura
IPC分类号： H03H9/25 , H01L41/047 , H03H9/02
CPC分类号： H01L41/047 , H03H9/02559 , H03H9/02669
摘要： An acoustic wave element includes: a piezoelectric substrate; an IDT (Interdigital Transducer) formed on the piezoelectric substrate; and an end face of the piezoelectric substrate that is formed on at least one end of the IDT in a propagation direction of an acoustic wave; wherein when a wavelength of the acoustic wave which the IDT excites is expressed by “λ” and a metallization ratio of the IDT is expressed by “D”, a distance between an inner end of an electrode finger of the IDT nearest to the end face and the end face is equal to or more than 7λ/16+D×λ/4 and equal to or less than 3λ/4+D×λ/4.

2. 发明授权

US09136823B2 Duplexer 有权
标题翻译：双工器
公开(公告)号：US09136823B2
公开(公告)日：2015-09-15
申请号：US13344265
申请日：2012-01-05
申请人： Shogo Inoue , Hiroshi Nakamura
发明人： Shogo Inoue , Hiroshi Nakamura
IPC分类号： H03H9/72 , H03H9/70 , H03H9/00 , H03H9/02 , H03H9/54 , H03H9/58 , H03H9/64
CPC分类号： H03H9/725 , H03H9/0023 , H03H9/0071 , H03H9/0085 , H03H9/02669 , H03H9/542 , H03H9/585 , H03H9/6436 , H03H9/644 , H03H9/6483 , H03H9/6489 , H03H9/706
摘要： A duplexer includes a reception filter that is connected between a reception terminal and an antenna terminal and includes one or a plurality of series resonators that are acoustic wave resonators, and a transmission filter that is connected between a transmission terminal and the antenna terminal and includes one or a plurality of acoustic wave resonators, a resonance frequency of a first series resonator that is one of the one or the plurality of series resonators and is closest to the antenna terminal in the reception filter being higher than an upper limit frequency of a reception band of the reception filter.
摘要翻译：双工器包括连接在接收端子和天线端子之间的接收滤波器，并且包括作为声波谐振器的一个或多个串联谐振器，以及连接在发送端子和天线端子之间的发送滤波器，并且包括一个或多个声波谐振器，作为一个或多个串联谐振器之一并且最接近接收滤波器中的天线端子的第一串联谐振器的谐振频率高于接收频带的上限频率的接收过滤器。

3. 发明申请

US20130106243A1 Acoustic Wave Electromechanical Device Comprising a Transduction Region and an Extended Cavity 有权
标题翻译：包括传导区和扩展腔的声波机电装置
公开(公告)号：US20130106243A1
公开(公告)日：2013-05-02
申请号：US13456026
申请日：2012-04-25
申请人： Alexandre REINHARDT , Emmanuel DEFAY , Francois PERRUCHOT
发明人： Alexandre REINHARDT , Emmanuel DEFAY , Francois PERRUCHOT
IPC分类号： H03H9/25
CPC分类号： H03H9/25 , H03H3/02 , H03H3/08 , H03H9/02228 , H03H9/02622 , H03H9/02637 , H03H9/02669 , H03H9/02763 , H03H9/02803 , H03H9/0542 , H03H9/17 , H03H9/542 , H03H9/6403 , H03H2009/02165
摘要： An electromechanical device having a resonator using acoustic waves propagating laterally within a piezoelectric plane resonant structure and electrodes on a face of said structure. The resonant structure comprises: a transduction region having a transduction length and generating acoustic waves; a free propagation region for the acoustic waves, adjacent to the transduction region and defined the plane of the transduction region; the resonant structure length being equal to an integer number of half-wavelengths, the resonance frequency of said resonator equaling the average propagation velocity of the wave within the structure divided by said wavelength, to adjust the quality factor of the resonator fixed by the length of the resonant structure and the coupling coefficient fixed by the ratio of the transduction length over the length of the resonant structure; the resonant structure defined by the assembly of the transduction region and the propagation region being laterally bounded by reflection regions.
摘要翻译：一种机电装置，其具有使用在压电平面共振结构内横向传播的声波和在所述结构的面上的电极的谐振器。谐振结构包括：具有转导长度并产生声波的转导区域; 用于声波的自由传播区域，邻近转导区域并限定换能区域的平面; 谐振结构长度等于半波长的整数，所述谐振器的谐振频率等于结构中的波的平均传播速度除以所述波长，以调整谐振器的质量因子固定的长度谐振结构和耦合系数由谐振结构长度上的换能长度比固定; 由转导区域和传播区域的组装限定的共振结构由反射区域横向界定。

4. 发明申请

US20100134211A1 Transversal Filter Operating Using Surface Acoustic Waves 有权
标题翻译：使用表面声波操作的横向滤波器
公开(公告)号：US20100134211A1
公开(公告)日：2010-06-03
申请号：US12640097
申请日：2009-12-17
申请人： Werner Ruile , Clemens Ruppel
发明人： Werner Ruile , Clemens Ruppel
IPC分类号： H03H9/64 , H03H9/54
CPC分类号： H03H9/1452 , H03H9/02669 , H03H9/02685
摘要： A transversal filter operates using surface acoustic waves and has a piezoelectric substrate and an acoustic track that is arranged on the substrate and in which a first transducer and a second transducer are arranged. Each transducer has electrode fingers. A function, which characterizes the weighting of the overlap length of electrode fingers of different polarity in the second transducer, has a half main lobe and at least one side lobe. The amplitude of the lobes decreases monotonally in a direction that points to the first transducer.
摘要翻译：横向滤波器使用表面声波进行操作，并且具有布置在基板上并且布置有第一换能器和第二换能器的压电基板和声轨。每个换能器都有电极指。表征第二换能器中不同极性的电极指的重叠长度的加权的功能具有半主瓣和至少一个旁瓣。波瓣的振幅在指向第一换能器的方向上单调减小。

5. 发明授权

US07194793B2 Method for producing an edge reflection type surface acoustic wave device 有权
标题翻译：边缘反射型声表面波装置的制造方法
公开(公告)号：US07194793B2
公开(公告)日：2007-03-27
申请号：US10844940
申请日：2004-05-13
申请人： Michio Kadota , Yasunori Takakuwa , Seigo Hayashi , Junya Ago , Hideya Horiuchi , Mamoru Ikeura
发明人： Michio Kadota , Yasunori Takakuwa , Seigo Hayashi , Junya Ago , Hideya Horiuchi , Mamoru Ikeura
IPC分类号： H04R31/00
CPC分类号： H03H9/6483 , H03H9/02669 , H03H9/14552 , H03H9/6436 , H03H9/6463 , Y10T29/42 , Y10T29/49004 , Y10T29/49005 , Y10T29/49011 , Y10T29/4908 , Y10T29/49128 , Y10T29/4913
摘要： A method for adjusting a frequency characteristic of an edge reflection type surface acoustic wave device includes the step of obtaining a frequency characteristic of an edge reflection type surface acoustic wave device having a piezoelectric substrate. The edge reflection type surface acoustic wave device has a pair of edges of the piezoelectric substrate which define a predetermined distance therebetween. The piezoelectric substrate is cut at a position which defines a distance that is shorter than the predetermined distance when a final frequency characteristic of the edge reflection type surface acoustic wave device is to be higher than the obtained frequency characteristic. The piezoelectric substrate is cut at a position which defines a distance that is longer than the predetermined distance when a final frequency characteristic of the edge reflection type surface acoustic wave device is to be lower than the obtained frequency characteristic.
摘要翻译：用于调整边缘反射型声表面波装置的频率特性的方法包括获得具有压电基片的边缘反射型声表面波装置的频率特性的步骤。边缘反射型弹性表面波器件具有在其间限定预定距离的压电基片的一对边缘。当边缘反射型弹性表面波器件的最终频率特性要比所获得的频率特性高时，将压电基片切割成限定比预定距离短的距离的位置。当边缘反射型弹性表面波器件的最终频率特性要低于所获得的频率特性时，压电基片被切割在限定比预定距离长的距离的位置处。

6. 发明授权

US07038353B2 Surface acoustic wave device and method of manufacturing the same 失效
标题翻译：表面声波装置及其制造方法
公开(公告)号：US07038353B2
公开(公告)日：2006-05-02
申请号：US10220759
申请日：2001-12-13
申请人： Yoshio Maeda , Shouichi Komatsu , Yusuke Kinoshita
发明人： Yoshio Maeda , Shouichi Komatsu , Yusuke Kinoshita
IPC分类号： H03H9/25
CPC分类号： H03H9/0542 , H03H3/08 , H03H9/0038 , H03H9/0047 , H03H9/02669 , H03H2260/00
摘要： The invention provides a piezoelectric substrate in the form of a rectangular plate in which a Rayleigh wave is propagated, and an IDT and a reflector are provided by forming interdigital electrodes on the piezoelectric substrate. At least an end face on a shorter side of the piezoelectric substrate on a top side thereof is formed as a vertical smooth surface that is substantially in parallel with a conductor strip at an end of the reflector in the position of an imaginary node of a stress wave exiting the conductor strip, thereby providing a reflecting end face to reflect the stress wave.
摘要翻译：本发明提供了一种矩形板形式的压电基片，其中瑞利波被传播，并且通过在压电基片上形成叉指电极来提供IDT和反射器。至少在其顶侧的压电基板的较短侧上的端面形成为垂直平滑表面，其基本上与反射器的端部处的导体条平行，处于应力的虚拟节点的位置离开导体条，从而提供反射端面以反映应力波。

7. 发明授权

US06879225B2 Surface acoustic wave device 有权
标题翻译：表面声波装置
公开(公告)号：US06879225B2
公开(公告)日：2005-04-12
申请号：US10610925
申请日：2003-07-01
申请人： Michio Kadota , Hideya Horiuchi , Takeshi Nakao , Yasuhiro Kuratani , Masakazu Mimura , Junya Ago
发明人： Michio Kadota , Hideya Horiuchi , Takeshi Nakao , Yasuhiro Kuratani , Masakazu Mimura , Junya Ago
IPC分类号： H03H9/145 , H03H3/10 , H03H9/02 , H03H9/25 , H03H9/64 , H03H9/15
CPC分类号： H03H9/6436 , H03H3/10 , H03H9/02559 , H03H9/02669 , H03H9/02834 , H03H9/02984 , H03H9/6433
摘要： A surface acoustic wave device includes a Y-cut, X-propagation LiTaO3 substrate, at least one interdigital transducer provided on the LiTaO3 substrate and made of Al or a metal containing Al as a major component, and an SiO2 film provided on the surface of the LiTaO3 substrate so as to cover the interdigital transducer, wherein the thickness Hs of the SiO2 film normalized by the wavelength λ of a surface acoustic wave and the cut angle θ of the LiTaO3 substrate are set to be in any one of the ranges represented by formulae (1) to (8): in the case of 0.00
摘要翻译：表面声波装置包括Y切割的X传播LiTaO 3基板，设置在LiTaO 3基板上的由Al或含有Al作为主要成分的金属制成的至少一个叉指换能器，以及设置在 LiTaO 3衬底以覆盖叉指换能器，其中由表面声波的波长λ和LiTaO 3衬底的切割角度θ归一化的SiO 2膜的厚度Hs被设定为由式（1）〜（8）：

8. 发明授权

US5914554A Surface wave resonator 失效
标题翻译：表面波谐振器
公开(公告)号：US5914554A
公开(公告)日：1999-06-22
申请号：US706303
申请日：1996-08-30
申请人： Michio Kadota , Junya Ago
发明人： Michio Kadota , Junya Ago
IPC分类号： H03H9/02 , H03H9/25 , H03H9/64 , H01L41/08
CPC分类号： H03H9/02669 , H03H9/6413
摘要： An end-face reflecting-type surface wave resonator using the SH-type surface wave achieves two types of resonance characteristics by use of only a single device. An interdigital transducer having a pair of comb-like electrodes are formed on a piezoelectric substrate having two oppositely-facing end faces. The interdigital transducer has two peaks of main lobes and are assigned with weights so that the two peaks of main lobes substantially coincide with frequency positions of attenuation poles disposed across a main lobe of a virtual normal-type interdigital transducer having the same number of pairs of electrodes as the weighted interdigital transducer. Thus, two types of resonance characteristics can be obtained.
摘要翻译：使用SH型表面波的端面反射型表面波谐振器仅通过单个器件实现两种谐振特性。具有一对梳状电极的叉指换能器形成在具有两个相对端面的压电基片上。叉指式换能器具有主瓣的两个峰值并且被赋予权重，使得主瓣的两个峰值与设置在具有相同数量的对的虚拟正交型叉指式换能器的主瓣之间的衰减极的频率位置基本一致电极作为加权叉指换能器。因此，可以获得两种类型的谐振特性。

9. 发明授权

US11848663B2 Resonant cavity surface acoustic wave (SAW) filters 有权
公开(公告)号：US11848663B2
公开(公告)日：2023-12-19
申请号：US17263880
申请日：2019-07-25
申请人： FREC'N'SYS
发明人： Sylvain Ballandras , Thierry LaRoche
IPC分类号： H03H9/64 , H03H9/02
CPC分类号： H03H9/6483 , H03H9/02669 , H03H9/02724 , H03H9/02771 , H03H9/02905 , H03H9/6489
摘要： A coupled cavity filter structure that uses a surface acoustic wave, in particular, a guided surface acoustic wave, comprises an acoustic wave propagating substrate, at least one input transducer structure and one output transducer structure, provided over the substrate, each comprising inter-digitated comb electrodes, at least one reflecting structure comprising at least one or more metallic strips positioned at a distance and in between the input and output transducer structures, in the direction of propagation of an acoustic wave. The acoustic wave propagating substrate is a composite substrate comprising a base substrate and a piezoelectric layer. In additional embodiments, a coupled cavity filter structure comprises a groove. In additional embodiments, a SAW ladder filter device comprises at least two coupled cavity filter structures as described herein, wherein the at least two coupled cavity filter structures are positioned on a single line.

10. 发明授权

US10879870B2 Elastic wave device, front-end circuit, and communication device 有权
公开(公告)号：US10879870B2
公开(公告)日：2020-12-29
申请号：US16375871
申请日：2019-04-05
申请人： Murata Manufacturing Co., Ltd.
发明人： Yutaka Kishimoto , Tetsuya Kimura
IPC分类号： H03H9/02 , H03H9/25 , H03H9/145 , H03H9/64
CPC分类号： H03H9/02653 , H03H9/02007 , H03H9/02574 , H03H9/02622 , H03H9/02669 , H03H9/02677 , H03H9/145 , H03H9/25 , H03H9/64
摘要： An elastic wave device includes a piezoelectric substrate and an IDT electrode provided on the piezoelectric substrate. The IDT electrode includes a busbar electrode extending in an elastic wave propagation direction and electrode fingers connected to the busbar electrode and extending in a direction perpendicular or substantially perpendicular to the elastic wave propagation direction. The piezoelectric substrate includes a groove extending along the elastic wave propagation direction. The groove is provided on a side across the busbar electrode in the perpendicular or substantially perpendicular direction from a side at which the electrode fingers are located.

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