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公开(公告)号：US4090153A
公开(公告)日：1978-05-16
申请号：US694041
申请日：1976-06-07
申请人： Minoru Toda , Susumu Osaka
发明人： Minoru Toda , Susumu Osaka
CPC分类号： H03H9/02842 , G10K11/36 , H03H3/08
摘要： The surface acoustic waves reflecting from the edges of a surface acoustic wave device, designed for low frequency application, are attenuated by placing an epoxy resin or a powder-epoxy resin mixture near the edge of the surface acoustic wave device.
摘要翻译： 通过在表面声波装置的边缘附近放置环氧树脂或粉末环氧树脂混合物，来设计用于低频应用的表面声波装置的边缘反射的表面声波被衰减。
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公开(公告)号：US4088969A
公开(公告)日：1978-05-09
申请号：US788874
申请日：1977-04-19
摘要： A tapped surface acoustic wave (SAW) delay line with time-resolved outputssing piezoelectric leaky wave coupling and bulk wave amplification, and having low loss characteristics. A solid piezoelectric semiconductor is placed adjacent to a solid piezoelectric substrate. A pulsed rf input signal is applied to interdigital transducers (IDT) on the substrate. The applied signal launches a SAW in the substrate in a direction parallel to the interface between the substrate and the piezoelectric semiconductor solid. Upon reaching the interface, the SAW is piezoelectrically leaky-wave coupled across an air gap to a bulk acoustic wave in the piezoelectric semiconductor. Reflections of the bulk wave occur at both surfaces of the piezoelectric semiconductor, and piezoelectrically couples back across the air gap to excite a SAW on the piezoelectric substrate. The resultant rf output includes the normal delayed SAW pulse and additional delayed and time-resolved pulses. The amplitude of the bulk wave may be increased using bulk wave amplification.
摘要翻译： 具有时间分辨输出的抽头声表面波（SAW）延迟线，采用压电泄漏波耦合和体波放大，具有低损耗特性。 将固体压电半导体放置成与固体压电基板相邻。 脉冲rf输入信号被施加到基板上的指数间换能器（IDT）。 所施加的信号在平行于衬底和压电半导体固体之间的界面的方向上在衬底中发射SAW。 在到达界面时，SAW在压电半导体中横跨气隙压电泄漏波耦合到体声波。 体波的反射发生在压电半导体的两个表面，并且压电耦合回穿过气隙，以激发压电衬底上的SAW。 所得到的rf输出包括正常延迟的SAW脉冲和附加的延迟和时间分辨脉冲。 可以使用体波放大来增加体波的幅度。
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公开(公告)号：US4065734A
公开(公告)日：1977-12-27
申请号：US705177
申请日：1976-07-14
申请人： Shouzo Takeno , Masao Mashita , Toshihiro Onodera
发明人： Shouzo Takeno , Masao Mashita , Toshihiro Onodera
CPC分类号： H03H9/02834 , H03H9/02574
摘要： The elastic surface wave device comprises a piezoelectric substrate having a dielectric constant of .epsilon..sub.2, a dielectric film having a dielectric constant of .epsilon..sub.1 and a thickness of h, and deposited on the piezoelectric substrate, and an inter-digital type input-ouput transducer formed on the dielectric film. The ratio of the dielectric constants .epsilon..sub.1 /.epsilon..sub.2, and a function 2.pi./.lambda..multidot.h proportioned to the thickness of the dielectric film are selected to satisfy a condition established in a frustum shaped region bounded by coordinate points P (.epsilon..sub.1 /.epsilon..sub.2 = 1/5,(2.pi./.lambda.).multidot.h = 0.1), Q(.epsilon..sub.1 /.epsilon..sub.2 = 1/5,(2.pi./.lambda.).multidot.h = 0.00016), R(.epsilon..sub.1 /.epsilon..sub.2 = 1/500,(2.pi./.lambda.).multidot.h = 0.0004), and S(.epsilon..sub.1 /.epsilon..sub.2 = 1/500, (2.pi./.lambda.).multidot.h = 0.006) on a graph wherein the ratio .epsilon..sub.1 /.epsilon..sub.2 is represented on the ordinate and the function (2.pi./80 ).multidot.h on the abscissa, where .lambda. represents the wavelength of the elastic surface wave. As a result, the energy of the elastic surface waves is propagated from the input transducer to the output transducer with a sufficiently large power.
摘要翻译： 弹性表面波装置包括介电常数为ε2的压电基片，介电常数ε为1且厚度为h的电介质膜，并沉积在压电基片上，以及数字型输入输出传感器 形成在电介质膜上。 选择介电常数ε1 /ε2与与电介质膜的厚度成比例的函数2π/λ×h的比率以满足在由坐标点P（ε1 /ε 2 = 1/5，（2π/λ）×h = 0.1），Q（ε1 /ε2 = 1/5，（2π/λ）×h = 0.00016），R（ε1 /ε2 = 500，（2π/λ）xh = 0.0004）和S（ε1 /ε2 = 1/500，（2 pi /λ）xh = 0.006），其中ε1 / 纵坐标和横坐标上的函数（2 pi / 80）xh，其中λ表示弹性表面波的波长。 结果，弹性表面波的能量以足够大的功率从输入传感器传播到输出换能器。
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公开(公告)号：US4063198A
公开(公告)日：1977-12-13
申请号：US685572
申请日：1976-05-12
CPC分类号： H03H9/02 , G10K11/24 , G01N2291/02491 , G01N2291/0427
摘要： An improved acoustic waveguide structure which comprises a ridge waveguide disposed in a horizontal direction extending outwardly from a substrate. The horizontal orientation of the waveguide which is in the form of a ledge results in particle motion of the ledge predominantly normal to the substrate plane with the largest motion at the free edge of the ledge and almost no motion in the substrate, thereby permitting a plurality of such structures to be densely packed on a common substrate.
摘要翻译： 一种改进的声波导结构，其包括沿从衬底向外延伸的水平方向布置的脊波导。 处于凸缘形式的波导的水平取向导致突出部分的主体垂直于基板平面的颗粒运动，在凸缘的自由边缘处具有最大的运动，并且在基板中几乎没有运动，从而允许多个 的这种结构被密集地堆积在共同的基底上。
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公开(公告)号：US4044321A
公开(公告)日：1977-08-23
申请号：US662761
申请日：1976-03-01
申请人： Carmine F. Vasile
发明人： Carmine F. Vasile
CPC分类号： H03H9/02866 , H03H9/1452 , H03H9/14597 , H03H9/6426 , H03H9/02574 , H03H9/02629 , H03H9/14544 , H03H9/1455
摘要： Two piezoelectric filters are cascaded for suppression of bulk waves while mutually reinforcing surface wave band pass filtering. Each filter has an apodized central transducer and two outer transducers. In one instance the two outer transducers on one filter differ from the two outer transducers of the other filter with regard to bulk wave generation and reception. In another instance one filter provides asymmetric transmission and symmetry is restored by a wave slow-down for surface waves only. In still another instance the slow-down pad is provided also, but the signals in the two outer transducers are electrically inverted.
摘要翻译： 两个压电滤波器级联用于抑制体波，同时相互加强表面波段通过滤波。 每个过滤器都有一个变迹中心传感器和两个外部传感器。 在一个实例中，关于体波产生和接收，一个滤波器上的两个外部换能器与另一个滤波器的两个外部换能器不同。 在另一种情况下，一个滤波器提供不对称的传输，对称性仅由表面波的波浪减速恢复。 在另一个实例中也提供了减速垫，但是两个外部换能器中的信号被电反转。
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公开(公告)号：US4016512A
公开(公告)日：1977-04-05
申请号：US619096
申请日：1975-10-02
申请人： Michael T. Wauk, II
发明人： Michael T. Wauk, II
CPC分类号： H03H9/36
摘要： A bulk acoustic wave delay line including a body of acoustic wave supporting material and having at least one planar surface capable of reversably converting longitudinal wave mode acoustic energy to shear wave mode acoustic energy, the delay line also including at least one transducer for converting electromagnetic wave energy to acoustic wave energy and vice versa for propagating said acoustic wave energy along a path, a major portion of which supports shear wave mode energy and which path is at least partially defined by the mode converting planar surface, the planar surface being treated to increase the attenuation of propagating acoustic wave energy thereat by a predetermined amount, the attenuation provided at said planar surface being relatively frequency independent as compared to the attenuation per unit time of the propagating acoustic wave energy in the delay line body whereby triple transit signal suppression is significantly increased while still maintaining a relatively wide band frequency response.
摘要翻译： 一种体声波延迟线，包括声波支撑材料体并且具有能够将纵波模式声能可逆地转换成剪切波模式声能的至少一个平面，所述延迟线还包括至少一个用于转换电磁波的换能器 能量到声波能量，反之亦然，用于沿着路径传播所述声波能量，其大部分支持剪切波模式能量，并且哪个路径至少部分地由模式转换平面表面限定，待处理的平面表面增加 传播声波能量衰减预定量时，与延迟线体中传播的声波能量的每单位时间的衰减相比，在所述平面处提供的衰减相对频率无关，从而三重转接信号抑制显着 增加，同时仍然保持相对较低 ide频段响应。
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公开(公告)号：US3996606A
公开(公告)日：1976-12-07
申请号：US559401
申请日：1975-03-18
CPC分类号： H04N9/78 , H04N9/7908 , H04N9/85 , H04N9/893
摘要： Apparatus provides improved comb filtering of color video signals subject to frequency errors. A charge transfer delay line, part of a comb filter, is caused to vary in delay time in consonance with the frequency errors in the color video signal. A modulator, frequency translates the color video signal such that an associated color synchronization component is translated to a desired frequency. The color synchronization component is compared in frequency to a reference and difference signal generated to control the delay of the above-mentioned delay line and stabilize the frequency of the color synchronization component.
摘要翻译： 装置提供经过频率误差的彩色视频信号的改进的梳状滤波。 根据彩色视频信号中的频率误差，使电荷转移延迟线（梳状滤波器的一部分）在延迟时间内变化。 调制器，频率转换彩色视频信号，使得相关联的颜色同步分量被转换成期望的频率。 将颜色同步分量在频率上与生成的参考和差分信号进行比较，以控制上述延迟线的延迟并稳定颜色同步分量的频率。
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28.发明授权Microwave bulk acoustic delay device having two transducers on the same surface and method of making same 失效具有相同表面上的两个换能器的微波体声声延迟装置及其制造方法
公开(公告)号：US3996535A
公开(公告)日：1976-12-07
申请号：US594236
申请日：1975-07-09
申请人： Zygmond Turski
发明人： Zygmond Turski
摘要： A wafer of lithium niobate metallized on both major surfaces is bonded to a magnesium aluminate spinel bulk acoustic delay line. The lithium niobate layer is divided into two separate electrically and mechanically isolated transducers using ion beam milling. The bulk acoustic delay line has a surface arranged to reflect a propagating acoustic wave generated by one of the divided transducers to the other of the transducers, the one transducer serving as an input and the other as an output. The acoustic delay line is suitable for broad band operation at microwave frequencies with at least 50 db isolation between the two ports.
摘要翻译： 在两个主表面上金属化的铌酸锂晶片被结合到铝酸镁尖晶石体声延迟线。 使用离子束铣削将铌酸锂层分成两个单独的电和机械隔离的换能器。 体声声延迟线具有布置成将由分离换能器中的一个产生的传播声波反射到另一个换能器的表面，一个换能器用作输入，另一个用作输出。 声学延迟线适用于微波频段的宽带操作，两个端口之间至少有50db隔离。
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公开(公告)号：US3995240A
公开(公告)日：1976-11-30
申请号：US535890
申请日：1974-12-23
申请人： Sheldon J. Kerbel
发明人： Sheldon J. Kerbel
IPC分类号： H03H9/145 , H03H3/08 , H03H9/00 , H03H9/02 , H03H9/25 , H03H9/30 , H03H9/42 , H03H9/26 , H03H9/32
CPC分类号： H03H9/42 , H03H9/02551
摘要： Disclosed is an acoustic surface wave device having reduced temperature coefficient of propagation delay within a desired range of operating temperatures. In one embodiment the device includes a piezoelectric substrate comprising X-propagating Y-cut quartz having a cut angle at which point of zero temperature coefficient of propagation delay is at a temperature which is higher than the desired range of operating temperatures. There is included on the substrate in the desired path of the propagating surface wave a deposit of conductive material which has the effect of lowering the temperature at which the point of zero temperature coefficient of propagation delay occurs, thereby reducing the magnitude of the temperature coefficient of propagation delay within the desired range of operating temperatures.
摘要翻译： 公开了一种在期望工作温度范围内传播延迟的温度系数降低的声表面波装置。 在一个实施例中，该装置包括压电衬底，其包括具有切割角的X传播的Y切割石英，在该切割角处，零温度传播延迟系数的点处于高于所需的工作温度范围的温度。 在传播表面波的所需路径中的衬底上包括导电材料的沉积物，其具有降低发生零温度传播延迟点的温度的温度的作用，从而降低温度系数的大小 传播延迟在所需的工作温度范围内。
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公开(公告)号：US3975698A
公开(公告)日：1976-08-17
申请号：US640353
申请日：1975-12-15
申请人： Charles M. Redman
发明人： Charles M. Redman
摘要： A fiber acoustic waveguide comprising a single crystal fiber and a single ystal film deposited on the outer elongated surface of the single crystal fiber, wherein the single crystal film has a higher velocity of propagation than the single crystal fiber. The fiber acoustic waveguide has a delay that is directly proportional to its length, whereupon fixed lengths of the waveguide provided fixed delay.A fiber acoustic waveguide system is provided by connecting one end of the waveguide to driving transducer means for converting an electrical signal to an acoustic signal, and the other end of the waveguide to pickup transducing means for converting the transported acoustic signal from the waveguide back into an electrical signal.
摘要翻译： 一种包含单晶纤维和沉积在单晶纤维的外伸长表面上的单晶膜的纤维声波导，其中单晶膜具有比单晶光纤更高的传播速度。 纤维声波导具有与其长度成正比的延迟，因此波导的固定长度提供了固定的延迟。
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