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1. 发明授权

US07876021B2 Surface acoustic wave device including an IDT defined by a metal filled in grooves in a piezoelectric substrate 有权
标题翻译：表面声波装置包括由填充在压电基板中的凹槽中的金属限定的IDT
公开(公告)号：US07876021B2
公开(公告)日：2011-01-25
申请号：US12629924
申请日：2009-12-03
申请人： Michio Kadota , Takeshi Nakao
发明人： Michio Kadota , Takeshi Nakao
IPC分类号： H01L41/04
CPC分类号： H03H9/02834 , H03H9/02559 , H03H9/02653
摘要： A surface acoustic wave device includes a LiTaO3 substrate, and an IDT having a high reflection coefficient, which has a relatively high electromechanical coupling coefficient k2, and which can obtain superior resonance characteristics and/or filter characteristics. In a surface acoustic wave device in which a plurality of grooves is provided in an upper surface of a LiTaO3 substrate and an IDT having a plurality of electrode fingers made of a metal filled in the plurality of grooves, the following equation is satisfied:(ρ3×C44)1/2>1.95×1011, where ρ represents the density of the metal defining the IDT, and C44 represents the stiffness thereof.
摘要翻译：表面声波装置包括LiTaO 3衬底和具有高反射系数的IDT，其具有相对较高的机电耦合系数k2，并且其可以获得优异的谐振特性和/或滤波器特性。在其中在LiTaO 3基板的上表面设置有多个槽的ID声表面波装置和具有由填充在多个槽中的金属制成的多个电极指的IDT，满足以下等式：（＆rgr ; 3×C44）1/2> 1.95×1011，其中＆rgr; 表示限定IDT的金属的密度，C44表示其刚度。

2. 发明申请

US20100072856A1 SURFACE ACOUSTIC WAVE DEVICE 有权
标题翻译：表面声波设备
公开(公告)号：US20100072856A1
公开(公告)日：2010-03-25
申请号：US12629924
申请日：2009-12-03
申请人： Michio KADOTA , Takeshi NAKAO
发明人： Michio KADOTA , Takeshi NAKAO
IPC分类号： H01L41/047
CPC分类号： H03H9/02834 , H03H9/02559 , H03H9/02653
摘要： A surface acoustic wave device includes a LiTaO3 substrate, and an IDT having a high reflection coefficient, which has a relatively high electromechanical coupling coefficient k2, and which can obtain superior resonance characteristics and/or filter characteristics. In a surface acoustic wave device in which a plurality of grooves is provided in an upper surface of a LiTaO3 substrate and an IDT having a plurality of electrode fingers made of a metal filled in the plurality of grooves, the following equation is satisfied:(ρ3×C44)1/2>1.95×1011, where ρ represents the density of the metal defining the IDT, and C44 represents the stiffness thereof.
摘要翻译：表面声波装置包括LiTaO 3衬底和具有高反射系数的IDT，其具有相对较高的机电耦合系数k2，并且其可以获得优异的谐振特性和/或滤波器特性。在其中在LiTaO 3基板的上表面设置有多个槽的ID声表面波装置和具有由填充在多个槽中的金属制成的多个电极指的IDT，满足以下等式：（＆rgr ; 3×C44）1/2> 1.95×1011，其中＆rgr; 表示限定IDT的金属的密度，C44表示其刚度。

3. 发明授权

US5684437A End face reflection type surface wave resonator 失效
标题翻译：端面反射型表面波谐振器
公开(公告)号：US5684437A
公开(公告)日：1997-11-04
申请号：US623631
申请日：1996-03-28
申请人： Junya Ago , Michio Kadota
发明人： Junya Ago , Michio Kadota
IPC分类号： H03H9/25 , H03H9/02 , H03H9/08 , H03H9/15 , H03H9/64
CPC分类号： H03H9/02669 , H03H9/02653 , H03H9/02677
摘要： An end face reflection type surface wave resonator utilizing a surface wave of an SH type is constructed by forming comb electrodes on one major surface of a piezoelectric substrate, which constitute an IDT, and forming grooves extending from one major surface to the other major surface to form a pair of end faces on which a surface wave is to be reflected the resonator having piezoelectric plate portions outside the grooves.
摘要翻译：利用SH型表面波的端面反射型表面波谐振器通过在构成IDT的压电基板的一个主表面上形成梳状电极，并且形成从一个主表面延伸到另一主表面的凹槽形成一对端面，使表面波在凹槽外侧具有压电板部分的谐振器被反射。

4. 发明授权

US5270606A Processing robust acoustic reflectors 失效
标题翻译：处理坚固的声反射器
公开(公告)号：US5270606A
公开(公告)日：1993-12-14
申请号：US733933
申请日：1991-07-22
申请人： Frederick Y. Cho , Thomas S. Hickernell , David Penunuri
发明人： Frederick Y. Cho , Thomas S. Hickernell , David Penunuri
IPC分类号： H03H9/02 , H01L41/08
CPC分类号： H03H9/02653 , H03H9/02637 , Y10T29/42
摘要： A reflector arrangement for an acoustic wave device comprises an acoustic wave propagating substrate, reflection elements having at least two different widths separated by at least one gap breadth disposed on the acoustic wave propagating substrate. The at least two different widths enhance reflected waves produced by the propagating acoustic wave in such a fashion to as to achieve a total acoustic reflectivity which is independent of variations in width of the reflection elements.
摘要翻译：用于声波装置的反射器装置包括声波传播基板，具有至少两个不同宽度的反射元件，该至少两个不同的宽度被布置在声波传播基板上的至少一个间隙宽度分开。至少两个不同的宽度以这样的方式增强由传播声波产生的反射波，以便实现与反射元件的宽度的变化无关的全部声反射率。

5. 发明授权

US4206426A Multiple pole surface wave acoustic filters employing angled grooved distributed reflector arrays 失效
标题翻译：采用斜槽式分布式反射器阵列的多极表面波声滤波器
公开(公告)号：US4206426A
公开(公告)日：1980-06-03
申请号：US964763
申请日：1978-11-29
申请人： Leland P. Solie , William J. Tanski
发明人： Leland P. Solie , William J. Tanski
IPC分类号： H03H9/25 , H03H3/08 , H03H9/02 , H03H9/64 , H01L41/10 , H03H9/26 , H03H9/32
CPC分类号： H03H9/02771 , H03H9/02653 , H03H9/02716 , H03H9/02795 , H03H9/6433 , H03H9/6436 , H03H9/6446
摘要： A multiple track acoustic surface wave filter processes input signals successively flowing in coupled resonant acoustic tracks, each track being realized between pairs of surface wave reflectors in the surface of a planar piezoelectric substrate.
摘要翻译：多声道声表面波滤波器处理在耦合谐振声道中连续流动的输入信号，每个轨迹在平面压电基片的表面中的表面波反射器对之间实现。

6. 发明授权

US3781717A Piezoelectric filter having resonators formed between adjacent interference locations 失效
标题翻译：具有相干干扰位置之间形成的谐振器的压电过滤器
公开(公告)号：US3781717A
公开(公告)日：1973-12-25
申请号：US3781717D
申请日：1972-06-29
申请人： SIEMENS AG
发明人： KUENEMUND F
IPC分类号： H03H9/145 , H03H3/08 , H03H7/46 , H03H9/00 , H03H9/02 , H03H9/25 , H03H9/64 , H03H9/72 , H04R17/08 , H03H7/04 , H03H9/26
CPC分类号： H03H9/72 , H03H9/02653 , H03H9/02771 , H03H9/02905 , H04R17/08
摘要： An electromechanical device operating on the surface-wave principle as a transducer of a filter comprises a substrate carrying a plurality of electrodes. The substrate may include a piezoelectric material and have interference locations defining resonant circuits. The interference locations may include a broken line of laser produced spots, a protuberance or a groove extending perpendicular to the direction of wave propagation.
摘要翻译：作为滤波器的换能器的基于表面波原理的机电装置包括承载多个电极的基板。衬底可以包括压电材料并且具有限定谐振电路的干涉位置。干涉位置可以包括激光产生的点的虚线，垂直于波传播方向延伸的突起或凹槽。

7. 发明授权

US08264299B2 Boundary acoustic wave device and communication equipment 有权
标题翻译：边界声波装置及通讯设备
公开(公告)号：US08264299B2
公开(公告)日：2012-09-11
申请号：US12711965
申请日：2010-02-24
申请人： Satoru Matsuda , Michio Miura , Takashi Matsuda
发明人： Satoru Matsuda , Michio Miura , Takashi Matsuda
IPC分类号： H03H9/25 , H03H9/145
CPC分类号： H03H9/02834 , H03H9/0222 , H03H9/02653
摘要： A boundary acoustic waves device includes a piezoelectric substrate having piezoelectricity, interdigitated electrodes formed on the piezoelectric substrate, a first medium formed on the piezoelectric substrate so as to cover the interdigitated electrode, and a second medium formed on the first medium. The interdigitated electrodes include a plurality of electrode fingers and bus bars that connect ends of the plurality of electrode fingers. A third medium is formed on the first medium. The second medium and the third medium are in contact with the first medium. The first medium, the second medium, and the third medium are formed of different materials. The first medium, the second medium, and the third medium are different in a ratio in length of a part with the third medium formed with respect to a length of a propagation path of boundary acoustic waves in a cross-section perpendicular to a longitudinal direction of the electrode fingers, in the longitudinal direction of the electrode fingers.
摘要翻译：声界面波装置包括具有压电性的压电基板，形成在压电基板上的叉指电极，形成在压电基板上以覆盖交叉指向电极的第一介质，以及形成在第一介质上的第二介质。交叉电极包括连接多个电极指的端部的多个电极指和汇流条。在第一介质上形成第三介质。第二介质和第三介质与第一介质接触。第一介质，第二介质和第三介质由不同的材料形成。第一介质，第二介质和第三介质在与纵向方向垂直的截面中相对于边界声波的传播路径的长度形成的部分的长度的比例不同的电极指的长度方向。

8. 发明申请

US20110199169A1 TUNABLE FILTER 有权
标题翻译： TUNABLE过滤器
公开(公告)号：US20110199169A1
公开(公告)日：2011-08-18
申请号：US13096026
申请日：2011-04-28
申请人： Michio KADOTA
发明人： Michio KADOTA
IPC分类号： H03H9/25
CPC分类号： H03H9/02834 , H03H9/02653 , H03H9/25 , H03H9/6403 , H03H9/6483
摘要： A tunable filter includes a surface acoustic wave resonator, in which an IDT electrode is defined by an electrode material provided in a recess in an upper surface of a piezoelectric substrate made of LiNbO3 or LiTaO3, and a ZnO film is arranged to cover the upper surface of the piezoelectric substrate, and variable capacitors connected with the surface acoustic wave resonator.
摘要翻译：可调滤波器包括表面声波谐振器，其中IDT电极由设置在由LiNbO 3或LiTaO 3制成的压电基板的上表面的凹部中的电极材料限定，并且ZnO膜被布置成覆盖上表面的压电基板和与表面声波谐振器连接的可变电容器。

9. 发明授权

US06480076B2 Recessed reflector single phase unidirectional transducer 有权
公开(公告)号：US06480076B2
公开(公告)日：2002-11-12
申请号：US09745820
申请日：2000-12-21
申请人： David S. Yip , Alvin M. Kong , Rahil U. Bhorania
发明人： David S. Yip , Alvin M. Kong , Rahil U. Bhorania
IPC分类号： H03H964
CPC分类号： H03H9/14505 , H03H3/08 , H03H9/02653 , H03H9/14541
摘要： The invention relates to a new family of surface acoustic wave single-phase unidirectional transducers (SPUDTs) by using M uniform width, uniformly spaced, single-level interdigitated electrodes lying on a uniform grid of a piezoelectric substrate where unidirectionality is achieved by selectively etching reflective structures into the substrate either in the spaces located between adjacent electrodes or under selected electrodes of the transducer. A SAW filter, resonator or delay line can also be formed by fabricating two such transducers on a single substrate, each having surface acoustic waves radiating towards the other.

10. 发明申请

US20020079987A1 Recessed reflector single phase unidirectional transducer 有权
标题翻译：嵌入式反射器单相单向传感器
公开(公告)号：US20020079987A1
公开(公告)日：2002-06-27
申请号：US09745820
申请日：2000-12-21
发明人： David S. Yip , Alvin M. Kong , Rahil U. Bhorania
IPC分类号： H03H009/64
CPC分类号： H03H9/14505 , H03H3/08 , H03H9/02653 , H03H9/14541
摘要： The invention relates to a new family of surface acoustic wave single-phase unidirectional transducers (SPUDTs) by using M uniform width, uniformly spaced, single-level interdigitated electrodes lying on a uniform grid of a piezoelectric substrate where unidirectionality is achieved by selectively etching reflective structures into the substrate either in the spaces located between adjacent electrodes or under selected electrodes of the transducer. A SAW filter, resonator or delay line can also be formed by fabricating two such transducers on a single substrate, each having surface acoustic waves radiating towards the other.
摘要翻译：本发明涉及一种新的表面声波单相单向换能器系列（SPUDT），它们通过使用均匀宽度均匀间隔的单电平指状电极，位于压电衬底的均匀栅格上，其中通过选择性地蚀刻反射在位于相邻电极之间的空间中或在换能器的选定电极下的结构进入衬底。也可以通过在单个基板上制造两个这样的换能器来形成SAW滤波器，谐振器或延迟线，每个具有朝向另一个辐射的表面声波。

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