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91. 发明申请

US20060255884A1 LAMB WAVE TYPE HIGH FREQUENCY DEVICE 失效
标题翻译：拉姆波型高频器件
公开(公告)号：US20060255884A1
公开(公告)日：2006-11-16
申请号：US11380509
申请日：2006-04-27
申请人： Satoru TANAKA
发明人： Satoru TANAKA
IPC分类号： H03H9/64
CPC分类号： H03H9/02842 , H03H9/02228 , H03H9/02551 , H03H9/14552 , H03H9/6426 , H03H9/643
摘要： A lamb wave type high frequency device includes: an interdigital transducer (IDT) electrode having an electrode finger interdigitated therein; a pair of reflectors having an electrode finger and being disposed at both sides of a propagation direction of a lamb wave excited by the IDT electrode; and a piezoelectric substrate on a surface of which the IDT electrode and the reflectors are disposed, wherein a pitch of the electrode finger of the IDT electrode and a pitch of the electrode finger of the reflectors are different from one another.
摘要翻译：兰姆波型高频器件包括：叉指式换能器（IDT）电极，其中具有互相指向的电极指; 一对反射器，具有电极指并设置在由IDT电极激发的兰姆波的传播方向的两侧; 以及其上设置有IDT电极和反射器的表面上的压电基板，其中IDT电极的电极指的间距和反射器的电极指的间距彼此不同。

92. 发明授权

US07132779B2 Surface acoustic wave device 有权
公开(公告)号：US07132779B2
公开(公告)日：2006-11-07
申请号：US11118512
申请日：2005-04-29
申请人： Hajime Kando
发明人： Hajime Kando
IPC分类号： H03H9/25
CPC分类号： H03H9/14538 , H03H9/14552 , H03H9/643
摘要： A surface acoustic wave device includes a ZnO dielectric thin film on a quartz substrate and an IDT electrode having strips between the ZnO thin film and the quartz substrate. The IDT electrode has at least one region where the strips are disposed at an interval defined by approximately a half-wavelength of the surface acoustic wave. The duty ratio of the IDT electrode is preferably more than about 0.5. Alternatively, a protrusion is formed via a slope in the region of the ZnO thin film where the IDT electrode is disposed, and the inclination angle θ of the slope is more than about 30°.

93. 发明授权

US06992547B2 Surface acoustic wave arrangement for broadband signal transmission 有权
标题翻译：用于宽带信号传输的表面声波布置
公开(公告)号：US06992547B2
公开(公告)日：2006-01-31
申请号：US10812163
申请日：2004-03-29
申请人： Andreas Bergmann
发明人： Andreas Bergmann
IPC分类号： H03N9/64
CPC分类号： H03H9/14532 , H03H9/02685 , H03H9/02716 , H03H9/02795 , H03H9/14505 , H03H9/14514 , H03H9/14526 , H03H9/14547 , H03H9/14552 , H03H9/14558 , H03H9/14564 , H03H9/14567 , H03H9/1457 , H03H9/14594
摘要： A surface acoustic wave arrangement has at least two interdigital transducers being provided on a piezoelectric substrate along an acoustic path, with at least one of the interdigital transducers being a fan transducer which is divided in a transverse direction into edge tracks and a center track. The acoustic wave excited in the edge tracks can be radiated either bidirectionally or unidirectionally in a predominant direction. On the other hand, the center track is formed so that the unidirectional radiation of the wave takes place in a direction opposite the predominant direction. In this manner, the signal transmission is suppressed in the frequency range corresponding to the finger period in the center track within the passband range of the transfer function. The obtained notch in the transfer function is used, for example, in receivers of terrestrial and satellite-based signals for suppressing the terrestrial signals in the satellite path of the receiver.
摘要翻译：表面声波布置具有至少两个叉指换能器，沿着声学路径设置在压电基片上，其中至少一个叉指式换能器是沿横向分成边缘轨道和中心轨道的风扇换能器。在边缘轨道中激发的声波可以在主要方向上双向或单向辐射。另一方面，形成中心轨道使得波的单向辐射沿与主要方向相反的方向发生。以这种方式，在与传送函数的通带范围内的中心轨道中的手指周期相对应的频率范围内抑制信号传输。传递函数中获得的陷波例如用于地面和卫星信号的接收机中，用于抑制接收机卫星路径中的地面信号。

94. 发明授权

US06504453B2 Transversal surface acoustic wave filter 失效
标题翻译：横向声表面波滤波器
公开(公告)号：US06504453B2
公开(公告)日：2003-01-07
申请号：US09981792
申请日：2001-10-19
申请人： Yasuhisa Fujii
发明人： Yasuhisa Fujii
IPC分类号： H03H964
CPC分类号： H03H9/6436 , H03H9/14505 , H03H9/14526 , H03H9/14552 , H03H9/643
摘要： In a transversal surface acoustic wave filter, an interdigital transducer on the input side, an interdigital transducer on the output side, and a reflector are arranged in the surface acoustic wave propagation direction on a piezoelectric substrate. While a surface acoustic wave passes through the interdigital transducer on the output side and while the surface acoustic wave reflecting from the reflector passes through the interdigital transducer on the output side, the surface acoustic wave is converted to first and second electrical signals, respectively. The interval between the reflector and the interdigital transducer on the output side is set so that no phase difference is generated between the first and second electrical signals. The interdigital transducer on the output side adjacent to the reflector is weighted so that a part of the interdigital transducer on the output side having the highest excitation intensity is positioned on the reflector side thereof.
摘要翻译：在横向声表面波滤波器中，输入侧的叉指式换能器，输出侧的叉指式换能器和反射器在压电基板上以声表面波传播方向配置。当表面声波穿过输出侧的叉指式换能器，并且当从反射器反射的表面声波穿过输出侧的叉指式换能器时，声表面波分别被转换为第一和第二电信号。在反射器和输出侧的叉指式换能器之间的间隔设定为在第一和第二电信号之间不产生相位差。对与反射镜相邻的输出侧的叉指式传感器进行加权，使得具有最高激发强度的输出侧的叉指式换能器的一部分位于其反射器侧。

95. 发明授权

US06476691B1 Surface acoustic wave filter 有权
标题翻译：表面声波滤波器
公开(公告)号：US06476691B1
公开(公告)日：2002-11-05
申请号：US09762025
申请日：2001-04-06
申请人： Shigeru Tsuzuki , Tsutomu Igaki , Ken Matsunami , Kazunori Nishimura , Hiroyuki Nakamura , Toru Yamada
发明人： Shigeru Tsuzuki , Tsutomu Igaki , Ken Matsunami , Kazunori Nishimura , Hiroyuki Nakamura , Toru Yamada
IPC分类号： H03H964
CPC分类号： H03H9/6433 , H03H9/0076 , H03H9/02637 , H03H9/14505 , H03H9/14529 , H03H9/14538 , H03H9/14552
摘要： A SAW filter comprising a piezoelectric substrate and at least two filter tracks formed on the substrate, each having at least two IDT electrodes for input and output. The two filter tracks have substantially the same phase within a pass band, while it is substantially inverse-phased outside the pass band. For realizing the above-described conditions, input IDT electrode of one filter track is connected in parallel with input IDT electrode of the other filter track, while output IDT electrode of one filter track is connected in parallel with output IDT electrode of the other filter track. Furthermore, frequency values of said two filter tracks substantially coincide at a point 3 dB lower from the peak transfer function value. Thus the above-configured SAW filter of the present invention is smaller in the overall size and offers a broad pass band and a steep attenuation characteristic.
摘要翻译：一种SAW滤波器，包括压电衬底和形成在衬底上的至少两个滤波器轨道，每个滤波器轨道具有用于输入和输出的至少两个IDT电极。两个滤波器轨道在通带内具有基本上相同的相位，而在通带外部基本上是反相的。为了实现上述条件，一个滤波器轨道的输入IDT电极并联连接到另一滤波器轨道的输入IDT电极，而一个滤波器轨道的输出IDT电极与另一滤波器轨迹的输出IDT电极并联连接。此外，所述两个滤波器轨道的频率值基本上与从峰值传递函数值降低3dB的点相重合。因此，本发明的上述配置的SAW滤波器的总体尺寸较小，并且具有宽的通带和陡峭的衰减特性。

96. 发明授权

US06373353B1 Surface acoustic wave transducer using NSPUDT property substrate and surface acoustic wave filter using the transducer 失效
标题翻译：表面声波传感器采用NSPUDT性能基板和声表面波滤波器使用传感器
公开(公告)号：US06373353B1
公开(公告)日：2002-04-16
申请号：US08860606
申请日：1997-11-18
申请人： Masao Takeuchi , Kazuhiko Yamanouchi , Hiroyuki Odagawa , Mitsuhiro Tanaka
发明人： Masao Takeuchi , Kazuhiko Yamanouchi , Hiroyuki Odagawa , Mitsuhiro Tanaka
IPC分类号： H03H964
CPC分类号： H03H9/14547 , H03H9/02716 , H03H9/14505 , H03H9/14517 , H03H9/14552 , H03H9/14594
摘要： In order to provide a transducer suitable for an anisotropic substrate having the NSPUDT property, on the anisotropic piezoelectric substrate being cut to have the NSPUDT property, there is formed a transducer structure having an exciting electrode structure (21) and a reflector structure (22). When &lgr; is a wavelength of a fundamental surface acoustic wave, said exciting electrode structure (21) includes a positive electrode (23) having a plurality of electrode fingers arranged at a pitch &lgr; and a negative electrode (24) having at least one electrode finger interdigitally arranged between said electrode fingers of the positive electrode with a center distance of &lgr;/2. The reflector transducer (22) includes a plurality of electrode fingers arranged with a center distance of &lgr;/2, and a distance Lg between said exciting electrode structure (21) and the reflector structure (22) is set to Lg=(2n+1)&lgr;/4 (n being a positive integer).
摘要翻译：为了提供适合于具有NSPUDT特性的各向异性基板的换能器，在被切割为具有NSPUDT特性的各向异性压电基片上形成具有激发电极结构（21）和反射器结构（22）的换能器结构，。当羔羊是基本表面声波的波长时，所述激发电极结构（21）包括具有以匝数排列的多个电极指的正极（23）和具有至少一个电极指的负极（24）在正极的所述电极指之间交叉布置，中心距离为lambd / 2。反射器换能器（22）包括布置有中心距离lambd / 2的多个电极指，并且所述激励电极结构（21）和反射器结构（22）之间的距离Lg被设置为Lg =（2n + 1 ）lambd / 4（n为正整数）。

97. 发明申请

US20010052737A1 Surface acoustic wave device 失效
标题翻译：表面声波装置
公开(公告)号：US20010052737A1
公开(公告)日：2001-12-20
申请号：US09871983
申请日：2001-06-04
发明人： Satoshi Ichikawa , Seiichi Mitobe
IPC分类号： H01L041/04
CPC分类号： H03H9/6433 , H03H9/14505 , H03H9/14514 , H03H9/1455 , H03H9/14552 , H03H9/14597
摘要： Transducers are connected in parallel on a piezoelectric substrate. Each of the transducers is constituted of RSPUDTS. The RSPUDTs include SPUDTs that are opposed to each other such that their propagation directions are opposite to each other. The SPUDTs have a unidirectional electrode structure having a propagation characteristic.
摘要翻译：传感器在压电基板上并联连接。每个换能器由RSPUDTS构成。 RSPUDT包括彼此相对的SPUDT，使得它们的传播方向彼此相反。 SPUDT具有传播特性的单向电极结构。

98. 发明申请

US20010040489A1 Surface acoustic wave filter 失效
标题翻译：表面声波滤波器
公开(公告)号：US20010040489A1
公开(公告)日：2001-11-15
申请号：US09725140
申请日：2000-11-29
申请人： Fujitsu Limited
发明人： Takashi Matsuda , Jun Tsutsumi , Osamu Ikata , Yoshio Satoh
IPC分类号： H03H009/64
CPC分类号： H03H9/0285 , H03H9/02748 , H03H9/14547 , H03H9/14552 , H03H9/14564 , H03H9/6453 , H03H9/6476
摘要： A surface acoustic wave filter includes a piezoelectric substrate, an exciting electrode formed on the piezoelectric substrate and exciting a surface acoustic wave, and a receiving electrode receiving the surface acoustic wave. Both the exciting and receiving electrodes are provided with interdigital electrode fingers having a period p. Either one of the exciting and receiving electrodes is constructed of a plurality of interdigital electrode sub-units having substantially the same electrode surface areas occupied by interdigital electrode fingers. The interdigital electrode sub-units are disposed in a direction perpendicular to a propagation direction of the excited surface acoustic wave and have a positional relation such that the interdigital electrode sub-units are offset to each other by (nnullnull)p, wherein n is an integer, in a direction parallel to the propagation direction of the surface acoustic wave.
摘要翻译：表面声波滤波器包括压电基板，形成在压电基板上的激励电极和激励表面声波，以及接收声表面波的接收电极。励磁接收电极和接收电极都设有具有周期p的叉指电极指。激励电极和接收电极中的任一个由多个叉指电极子单元构成，其具有由交叉指状电极指指占据的基本相同的电极表面积。叉指电极子单元配置在与激励声表面波的传播方向垂直的方向上，具有使指数间电极子单元彼此偏移（n±¼）p的位置关系，其中n 是平行于表面声波的传播方向的整数。

99. 发明申请

US20010040421A1 Surface acoustic wave apparatus 失效
标题翻译：表面声波装置
公开(公告)号：US20010040421A1
公开(公告)日：2001-11-15
申请号：US09881718
申请日：2001-06-18
发明人： Seiichi Mitobe
IPC分类号： H03H009/64
CPC分类号： H03H9/14505 , H03H9/14552
摘要： There is provided an apparatus that shows a much better transmission function characteristic in a signal passing band, and a low insertion loss. A plurality of pairs of electrode fingers constitute a first split electrode group of 5a1, 5b1, 5a2, 5b2, 5a3, 5b3, . . . . Further, a plurality of pairs of electrode fingers constitute a second split electrode group of 6a1, 6b1, 6a2, 6b2, 6a3, 6b3, . . . . The pairs of electrode fingers of both the groups are interleaved. The pairs of electrode fingers include electrode fingers of a width narrower than null/8 (null indicates the wavelength of a surface acoustic wave serving as the operation central frequency), and electrode fingers of a width wider than null/8, and the distance between the centers of the adjacent electrode fingers differs from null/4.
摘要翻译：提供了一种在信号通过频带中显示出更好的传输功能特性以及低插入损耗的装置。多对电极指构成5a1,5b1,5a2,5b2,5a3,5b3的第一分离电极组。。。。此外，多对电极指构成6a1,6b1,6a2,6b2,6a3,6b3的第二分割电极组。。。。两组的电极指对成对交错。电极指的对包括宽度窄于lambd / 8的宽度的电极指（lambd表示作为操作中心频率的表面声波的波长），宽度大于lambd / 8的电极指和相邻电极指的中心不同于lambd / 4。

100. 发明授权

US06268782B1 Electro-acoustic device with a variable acoustic wave velocity piezoelectric substrate 失效
标题翻译：具有可变声波速度压电基片的电声装置
公开(公告)号：US06268782B1
公开(公告)日：2001-07-31
申请号：US08741025
申请日：1996-10-30
申请人： Clinton S. Hartmann , Dong Pei Chen
发明人： Clinton S. Hartmann , Dong Pei Chen
IPC分类号： H03H9145
CPC分类号： H03H9/6433 , H03H9/0038 , H03H9/0057 , H03H9/14552 , H03H9/14588 , H03H9/6436 , H03H9/6463
摘要： There is described an electro-acoustic device, comprising a piezo-electric substrate and a first transducer and second transducer supported by the substrate and each including a pair of interdigital transducer electrode arrays, the electrodes of the arrays being interleaved with each other. The first and second transducer are disposed opposing each other in a propagation direction of acoustic waves excited by the first and second transducers. The first transducer has a first electric signal associated with and existing across, and the second transducer has a second electrical signal associated with it which has a different phase from the first electrical signal. The first and second transducers are spaced apart such that substantially in-phase acoustic waves propagating in the substrate and incident on the first transducer in-phase with the first electric signal and on the second transducer in-phase with the second electrical signal. Preferably, the first and second transducers are spaced apart by an integer number of half acoustic wavelengths corresponding to an operating frequency of the device. This permits differential or balanced driving of the device. There is further disclosed examples of such a device utilised in transversely and in-line coupled resonator filters to provide balanced or differential inputs or outputs thereto, and to facilitate cascade connected coupled resonator filters having no ground loops.
摘要翻译：描述了一种电声器件，包括压电基片和由基片支撑的第一换能器和第二换能器，每个包括一对叉指式换能器电极阵列，阵列的电极彼此交错。第一和第二换能器在由第一和第二换能器激发的声波的传播方向上彼此相对设置。第一传感器具有与之相关并且存在的第一电信号，并且第二换能器具有与其相关联的第二电信号，其具有与第一电信号不同的相位。第一和第二换能器间隔开，使得基本上同相的声波在衬底中传播并且与第一电信号同相入射在第一换能器上，并且与第二电信号同相入射到第一换能器上。优选地，第一和第二换能器间隔开对应于装置的工作频率的整数个半声波长。这允许设备的差动或平衡驱动。还公开了用于横向和串联耦合谐振器滤波器中的这种器件的示例，以向其提供平衡或差分输入或输出，并且便于没有接地回路的级联连接的耦合谐振器滤波器。

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