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1. 发明授权

US4776917A Single crystal wafer of lithium tantalate 失效
标题翻译：钽酸锂单晶晶片
公开(公告)号：US4776917A
公开(公告)日：1988-10-11
申请号：US22591
申请日：1987-03-04
申请人： Masahiro Ogihara , Shinji Makikawa , Masaaki Iguchi
发明人： Masahiro Ogihara , Shinji Makikawa , Masaaki Iguchi
IPC分类号： C30B29/30 , C30B15/00 , H01L41/18 , H03H9/02 , C30B33/00
CPC分类号： H03H9/02968 , C30B15/00 , C30B29/30 , H01L41/18 , H03H9/02559 , Y10T29/42
摘要： The single crystal wafer of lithium tantalate provided by the invention is characterized by the limited range of variation of the value of double refraction which should not exceed .+-.6.times.10.sup.-4 so that the value of the double refraction is given by 4.5.times.10.sup.-3 .+-.6.times.10.sup.-4. When single crystal wafers of lithium tantalate each satisfying the above requirements are used for the manufacture of SAW devices, the devices may have a very small deviation of the SAW sound velocity from the standard value and the range of variation of the SAW sound velocity within a wafer is also very small so that the SAW devices can be manufactured with greatly improved productivity and excellent quality.
摘要翻译：由本发明提供的钽酸锂单晶晶片的特征在于双折射值的变化范围不能超过+/- 6×10 -4，使得双折射值由4.5×10 -3 +/- 6x10-4。当满足上述要求的钽酸锂的单晶晶片用于制造SAW器件时，器件可能具有非常小的SAW声速与标准值的偏差和SAW声速的变化范围晶片也非常小，使得SAW器件可以以大大提高的生产率和优良的品质制造。

2. 发明授权

US3893047A Acoustic surface wave transmission system 失效
标题翻译：声表面波传输系统
公开(公告)号：US3893047A
公开(公告)日：1975-07-01
申请号：US44808374
申请日：1974-03-04
申请人： THOMSON CSF
发明人： LARDAT CLAUDE
IPC分类号： H03H9/00 , H03H9/02 , H03H9/42 , H03H9/64 , H03H9/72 , H03H9/76 , H03H9/26 , H03H9/30 , H03H9/32
CPC分类号： H03H9/44 , H03H9/02716 , H03H9/02779 , H03H9/02795 , H03H9/02968 , H03H9/423 , H03H9/72
摘要： A system for processing a signal during its transmission in the form of acoustic surface waves. A piezoelectric substrate, having transmitting and receiving transducers and at least one grating reflecting transmitted acoustic surface waves, comprises a thin photoconductive layer on the path of the reflected waves. Subjecting the layer-substrate interaction zone to selective illumination of variable intensity leads to the production of an acousto-electric effect having zero electric field, so that the signal is attenuated outside the nonilluminated zones. The invention is of use particularly for non-dispersive filters and light-controlled delay lines.
摘要翻译：一种用于在其传播期间以声表面波的形式处理信号的系统。

3. 发明公开

EP0064382A3 SURFACE ACOUSTIC WAVE FILTER 失效
标题翻译：表面声波滤波器
公开(公告)号：EP0064382A3
公开(公告)日：1983-06-01
申请号：EP82302165
申请日：1982-04-27
申请人： FUJITSU LIMITED
发明人： ONO, MASAAKI , FUJIWARA, YOSHIRO , YANAGISAWA, MASANOBU
IPC分类号： H03H9/145 , H03H3/08 , H03H9/02 , H03H9/42 , H03H9/64 , H03H9/72 , H03H9/76
CPC分类号： H03H9/72 , H03H9/02968 , H03H9/6403 , H03H9/643 , H03H9/76
摘要： A surface acoustic wave filter comprises: a substrate of piezoelectric material; a multistrip coupler comprising a plurality of parallel conductive strips formed on said subs trate; at least one input transducer disposed on one side of said multistrip coupler; and at least one output transducer disposed on the other side of said multistrip coupler. A part of the middle portion of each of said conductive strips of said multistrip coupler is made of a photo-conductive material. This can provide a switchable or adjustable surface acoustic wave filter.

4. 发明公开

EP0373602A2 Optically modulated acoustic charge transport device 失效
标题翻译： Akustische Ladungstransporteinrichtung mit optischer Modulation。
公开(公告)号：EP0373602A2
公开(公告)日：1990-06-20
申请号：EP89122953.6
申请日：1989-12-12
申请人： UNITED TECHNOLOGIES
发明人： Merritt, Sears W. , Sacks, Robert N. , Foyt, Arthur G.
IPC分类号： H03H9/02
CPC分类号： H01L27/20 , H03H9/02968
摘要： A novel heterojunction acoustic charge transport device (10) includes a transducer (24) fabricated on a GaAs/AlGaAs heterojunction material that launches surface acoustic waves (SAW) along a transport channel (35). The device is characterized by a photodiode (40) configured adjacent to the channel on the substrate (28) to receive a modulated optical beam. An electrical signal equivalent is provided to a Schottky electrode (33) at the end of the transport channel modulating the charge propagated by the surface acoustic wave. The modulated signal is output at a distal end of the transport channel.
摘要翻译：一种新颖的异质结声电荷传输装置（10）包括在沿着传输通道（35）发射表面声波（SAW）的GaAs / AlGaAs异质结材料上制造的换能器（24）。该器件的特征在于配置成与衬底（28）上的通道相邻的光电二极管（40），以接收调制的光束。在传输通道末端对肖特基电极（33）提供电信号，调制由声表面波传播的电荷。调制信号在传输信道的远端输出。

5. 发明公开

EP0373602A3 Optically modulated acoustic charge transport device 失效
标题翻译：光电调制充电传输装置
公开(公告)号：EP0373602A3
公开(公告)日：1991-09-25
申请号：EP89122953.6
申请日：1989-12-12
申请人： UNITED TECHNOLOGIES
发明人： Merritt, Sears W. , Sacks, Robert N. , Foyt, Arthur G.
IPC分类号： H03H9/02
CPC分类号： H01L27/20 , H03H9/02968
摘要： A novel heterojunction acoustic charge transport device (10) includes a transducer (24) fabricated on a GaAs/AlGaAs heterojunction material that launches surface acoustic waves (SAW) along a transport channel (35). The device is characterized by a photodiode (40) configured adjacent to the channel on the substrate (28) to receive a modulated optical beam. An electrical signal equivalent is provided to a Schottky electrode (33) at the end of the transport channel modulating the charge propagated by the surface acoustic wave. The modulated signal is output at a distal end of the transport channel.

6. 发明公开

EP0064382A2 Surface acoustic wave filter 失效
标题翻译：表面声波滤波器。
公开(公告)号：EP0064382A2
公开(公告)日：1982-11-10
申请号：EP82302165.4
申请日：1982-04-27
申请人： FUJITSU LIMITED
发明人： Ono, Masaaki , Fujiwara, Yoshiro , Yanagisawa, Masanobu
IPC分类号： H03H9/64
CPC分类号： H03H9/72 , H03H9/02968 , H03H9/6403 , H03H9/643 , H03H9/76
摘要： A surface acoustic wave filter comprises: a substrate of piezoelectric material; a multistrip coupler comprising a plurality of parallel conductive strips formed on said substrate; at least one input transducer disposed on one side of said multistrip coupler; and at least one output transducer disposed on the other side of said multistrip coupler. A part of the middie portion of each of said conductive strips of said multistrip coupler is made of a photo-conductive material. This can provide a switchable or adjustable surface acoustic wave filter.

7. 发明授权

US07430344B2 Acousto-optic device and fabrication method of acousto-optic device 失效
标题翻译：声光装置的声光装置及其制造方法
公开(公告)号：US07430344B2
公开(公告)日：2008-09-30
申请号：US11723936
申请日：2007-03-22
申请人： Hiroshi Miyata , Yukito Tsunoda , Tadao Nakazawa , Yumi Nakazawa
发明人： Hiroshi Miyata , Yukito Tsunoda , Tadao Nakazawa , Yumi Nakazawa
IPC分类号： G02F1/295
CPC分类号： G02F1/125 , G02F1/116 , H03H9/02968 , H04J14/021
摘要： An acousto-optic device is disclosed which can achieve both of suppression of secular change and prevention of device damage and can maintain a stabilized wavelength selection filtering operation. The acousto-optic device includes a substrate on which a SAW guide for guiding a surface acoustic wave and an optical waveguide for guiding an optical wave are provided. A pyro-electricity coping conductive wiring pattern is provided in a region of the substrate other than the SAW guide and neutralizes polarization charge generated on a surface of the substrate.
摘要翻译：公开了一种可以实现抑制长期变化和防止设备损坏的声光器件，并且可以保持稳定的波长选择滤波操作。声光装置包括：基板，用于引导表面声波的SAW引导件和用于引导光波的光波导的基板。在除了SAW引导件之外的基板的区域中设置热电承载导电布线图案，并且中和在基板的表面上产生的极化电荷。

8. 发明申请

US20050259906A1 Acousto-optic device and fabrication method of acousto-optic device 有权
标题翻译：声光装置的声光装置及其制造方法
公开(公告)号：US20050259906A1
公开(公告)日：2005-11-24
申请号：US10945923
申请日：2004-09-22
申请人： Hiroshi Miyata , Yukito Tsunoda , Tadao Nakazawa , Yumi Nakazawa
发明人： Hiroshi Miyata , Yukito Tsunoda , Tadao Nakazawa , Yumi Nakazawa
IPC分类号： G02F1/11 , G02F1/125 , G02F1/335 , H03H9/02 , H03H9/145 , H03H9/25 , H04J14/02
CPC分类号： G02F1/125 , G02F1/116 , H03H9/02968 , H04J14/021
摘要： An acousto-optic device is disclosed which can achieve both of suppression of secular change and prevention of device damage and can maintain a stabilized wavelength selection filtering operation. The acousto-optic device includes a substrate on which a SAW guide for guiding a surface acoustic wave and an optical waveguide for guiding an optical wave are provided. A pyro-electricity coping conductive wiring pattern is provided in a region of the substrate other than the SAW guide and neutralizes polarization charge generated on a surface of the substrate.
摘要翻译：公开了一种可以实现抑制长期变化和防止设备损坏的声光器件，并且可以保持稳定的波长选择滤波操作。声光装置包括：基板，用于引导表面声波的SAW引导件和用于引导光波的光波导的基板。在除了SAW引导件之外的基板的区域中设置热电承载导电布线图案，并且中和在基板的表面上产生的极化电荷。

9. 发明授权

US06710510B1 Method and apparatus for modifying acoustic wave characteristics 有权
标题翻译：改善声波特性的方法和装置
公开(公告)号：US06710510B1
公开(公告)日：2004-03-23
申请号：US09672682
申请日：2000-09-28
申请人： John Hong
发明人： John Hong
IPC分类号： H01L4108
CPC分类号： G10K11/36 , H03H9/02968
摘要： Acoustic wave characteristics varied by illumination of the acoustic wave propagation medium. An acoustic wave is generated and propagated on or through a medium, typically a piezoelectric substrate. The medium is illuminated, creating a charge grating. The velocity of the acoustic wave is altered and certain frequency components of the acoustic wave are reflected. Transducers may be used to extract the selected frequency. The characteristics of the illumination, including, among others, the wavelength and the intensity, may be varied to produce various acoustic wave velocities and to select particular acoustic wave frequency components.
摘要翻译：声波特性通过声波传播介质的照射而变化。在介质上或通过介质（通常为压电基片）上产生和传播声波。介质被照亮，产生电荷光栅。声波的速度被改变，声波的某些频率分量被反射。传感器可用于提取所选频率。可以改变照明的特征，包括波长和强度等，以产生各种声波速度并选择特定的声波频率分量。

10. 发明授权

US4798987A Surface acoustic wave generator 失效
标题翻译：表面声波发生器
公开(公告)号：US4798987A
公开(公告)日：1989-01-17
申请号：US87410
申请日：1987-08-20
申请人： Kenji Nakamura
发明人： Kenji Nakamura
IPC分类号： H03H9/02 , H01L41/08
CPC分类号： H03H9/02968
摘要： A surface acoustic wave generator includes a transducer array of a plurality of surface acoustic wave transducers having different center frequencies from each other, and a variable frequency oscillator for supplying an HF signal to drive the transducer array. A distributor distributes the HF signal supplied from the oscillator to each of the transducers of the transducer array, and a device provided between each of the transducers and the distributor prevents the HF signals reflected by the transducers from returning to the distributor.
摘要翻译：表面声波发生器包括具有彼此不同的中心频率的多个表面声波换能器的换能器阵列，以及用于提供HF信号以驱动换能器阵列的可变频率振荡器。分配器将从振荡器提供的HF信号分配给换能器阵列的每个换能器，并且设置在每个换能器和分配器之间的装置防止换能器反射的HF信号返回到分配器。

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