公开(公告)号：US4213104A

公开(公告)日：1980-07-15

申请号：US945359

申请日：1978-09-25

申请人： Donald E. Cullen ,  Robert A. Wagner

发明人： Donald E. Cullen ,  Robert A. Wagner

IPC分类号： G10K11/36 ,  H03H3/08 ,  H03H3/10 ,  H03H9/10 ,  H03H9/25 ,  H03H9/04 ,  H03H9/30

CPC分类号： H03H9/1092 ,  G10K11/36

摘要： A surface acoustic wave (SAW) device having a substrate of desired material is vacuum encapsulated in a structure fabricated from the same material as that comprising the substrate.

摘要翻译： 具有所需材料的衬底的表面声波（SAW）器件被真空封装在由与包括衬底的材料相同的材料制成的结构中。

公开(公告)号：US4137470A

公开(公告)日：1979-01-30

申请号：US775515

申请日：1977-03-08

申请人： Bernard Desormiere ,  Gerard Volluet

发明人： Bernard Desormiere ,  Gerard Volluet

IPC分类号： H03H9/25 ,  B06B1/08 ,  G10K11/36 ,  H03H3/08 ,  H03H9/145 ,  H01L41/14

CPC分类号： H03H9/14502 ,  B06B1/08 ,  G10K11/36

摘要： The invention relates to elastic surface-wave structures. The elastic surface wave structure in accordance with the invention comprises a non magnetic substrate and a surface wave transducer containing at least one emissive zone situated in a deposited layer of magnetostrictive material subjected to an alternating magnetic field and to a magnetic polarization field.

摘要翻译： 本发明涉及弹性表面波结构。 根据本发明的弹性表面波结构包括非磁性基板和表面波换能器，其包含位于经受交变磁场和磁极化场的磁致伸缩材料的沉积层中的至少一个发射区域。

公开(公告)号：US4109173A

公开(公告)日：1978-08-22

申请号：US826108

申请日：1977-08-19

申请人： Robert M. O'Connell

发明人： Robert M. O'Connell

IPC分类号： G10K11/36 ,  H01L41/18 ,  H01L41/10

CPC分类号： G10K11/36 ,  H01L41/18

摘要： Doubly rotated propagation surface defining cuts of single crystal berlinite (AIPO.sub.4) are utilized to provide temperature compensated surface acoustic wave (SAW) substrates having high piezoelectric coupling factors and low diffraction losses. A preferred embodiment of the invention comprises a berlinite substrate member having a propagation surface that substantially coincides with a plane defined by Euler angles Lambda = 76.8.degree., mu = 90.0.degree., and Theta = 11.5.degree.. An alternative embodiment utilizes a propagation surface that substantially coincides with a plane defined by Euler angles Lambda = 79.7.degree., mu = 90.0.degree., and Theta = 15.5.degree..

公开(公告)号：US3978731A

公开(公告)日：1976-09-07

申请号：US445193

申请日：1974-02-25

申请人： Thomas M. Reeder ,  Anthony J. Demaria

发明人： Thomas M. Reeder ,  Anthony J. Demaria

IPC分类号： G01B17/00 ,  G01D5/48 ,  G01L9/00 ,  G01L11/00 ,  G01P15/08 ,  G10K11/36 ,  H03B5/04 ,  H03B5/32

CPC分类号： G01L9/0025 ,  G10K11/36 ,  H03B5/326 ,  H03B5/04 ,  Y10S73/04

摘要： Surface acoustic waves are propagated across a thin, flexible diaphragm which is subjected to an applied external pressure. Since the wave velocity and path length vary with diaphragm deformation, the acoustic wave delay time is a function of the applied external pressure. Electroacoustic transducers are fabricated on opposite edges of the diaphragm for electronic excitation and detection of the surface acoustic wave. An electronic feedback path including the two transducers, the wave path, and an electronic amplifier oscillates at a frequency which is determined by the delay time required for acoustic wave propagation over the diaphragm path, and which decreases approximately linearly with applied external pressure. A second acoustic path called the reference path has a length equal to the first path and in the preferred embodiment contains a diaphragm which is subject to a different applied pressure. A second electronic feedback path composed of two transducers, the reference path and a second amplifier oscillates at a second frequency called the reference frequency. By applying a sample of the first and second oscillator voltages to a semiconductor mixer, a difference frequency output is obtained which is proportional to the differential pressure. The difference frequency output is approximately independent of temperature, and is easily converted to various digital codes by use of standard frequency counter circuits. If only one set of transducers is used, the device can also measure temperature in a digital manner. By adding a mass load to the center of the diaphragm, acceleration may be measured. Stress or strain measurements may also be made by bonding the diaphragms or only the transducers directly on the physical surface to be measured.

摘要翻译： 表面声波在穿过施加的外部压力的薄的柔性隔膜上传播。 由于波浪速度和路径长度随隔膜变形而变化，所以声波延迟时间是施加的外部压力的函数。 在隔膜的相对边缘上制造电声换能器，用于电子激发和检测表面声波。 包括两个换能器，波道和电子放大器的电子反馈路径以由隔膜路径上的声波传播所需的延迟时间确定的频率振荡，并且随着施加的外部压力而大致线性地减小。 称为基准路径的第二声路径具有等于第一路径的长度，并且在优选实施例中包含经受不同施加压力的隔膜。 由两个换能器组成的第二电子反馈路径，参考路径和第二放大器以称为参考频率的第二频率振荡。 通过将第一和第二振荡器电压的样本应用于半导体混频器，获得与压差成比例的差分频率输出。 差频输出大体上与温度无关，并且通过使用标准频率计数器电路容易地转换成各种数字代码。 如果仅使用一组换能器，则该装置还可以以数字方式测量温度。 通过向隔膜的中心添加质量负载，可以测量加速度。 压力或应变测量也可以通过将膜片或仅传感器直接粘合在待测物理表面上来进行。

公开(公告)号：US3962673A

公开(公告)日：1976-06-08

申请号：US518987

申请日：1974-10-29

申请人： Jean Desbois ,  Pierre Tournois

发明人： Jean Desbois ,  Pierre Tournois

IPC分类号： G10L15/08 ,  G10K11/36 ,  G10L15/02 ,  H04N3/10 ,  H04B11/00

CPC分类号： H04N3/10 ,  G10K11/36

摘要： A system is provided for reading acoustic images such as those obtainable in an elastic medium as a result of the focusing of, or interference between, acoustic waves. The image analysing device comprises a substrate made of piezoelectric material which is provided on one face with an interdigital array and an electro-acoustic transducer.The system permits to read acoustic images formed at the free surface on the opposite face of the substrate or at a certain distance from its free surface in contact with an elastic propagation medium.

摘要翻译： 提供了一种系统，用于读取诸如由于声波的聚焦或干涉而在弹性介质中可获得的声像的声像。 图像分析装置包括由设置在具有叉指阵列的一个面上的压电材料制成的基板和电声换能器。

公开(公告)号：US3952268A

公开(公告)日：1976-04-20

申请号：US492791

申请日：1974-07-29

申请人： Manfred B. Schulz ,  Melvin G. Holland

发明人： Manfred B. Schulz ,  Melvin G. Holland

IPC分类号： G01S13/28 ,  G10K11/36 ,  H03H3/10 ,  H03H9/02 ,  H03H9/145 ,  H03H9/42 ,  H03H7/30

CPC分类号： G01S13/28 ,  G01S13/282 ,  G10K11/36 ,  H03H3/10 ,  H03H9/02574 ,  H03H9/02834 ,  H03H9/145 ,  H03H9/42

摘要： A temperature compensated acoustic surface wave device, such as a surface wave delay line is provided in which temperature compensation is provided by the deposition of an interdigital electrode structure on a substrate with an overlay film surface of piezoelectric material of a predetermined thickness. A double substrate arrangement is also disclosed in which the interdigital electrode structure is deposited upon the surface of a non-piezo-electric layer which in turn is placed upon the surface of a piezoelectric substrate.

摘要翻译： 提供了诸如表面波延迟线的温度补偿声表面波器件，其中通过在具有预定厚度的压电材料的覆盖膜表面的衬底上沉积叉指电极结构来提供温度补偿。 还公开了一种双基板布置，其中叉指电极结构沉积在非压电层的表面上，非压电层又被放置在压电基板的表面上。

公开(公告)号：US3946338A

公开(公告)日：1976-03-23

申请号：US584765

申请日：1975-06-09

申请人： Ronald Vernon Schmidt

发明人： Ronald Vernon Schmidt

IPC分类号： H03H9/145 ,  B06B1/00 ,  G10K11/24 ,  G10K11/36 ,  H03H3/08 ,  H03H9/00 ,  H03H9/02 ,  H03H9/30 ,  H03H9/64 ,  H03H9/72 ,  H04B11/00 ,  H03H9/26 ,  H01L41/18 ,  H03H9/32

CPC分类号： H04B11/00 ,  B06B1/00 ,  G10K11/24 ,  G10K11/36 ,  H03H9/02622 ,  H03H9/02708 ,  H03H9/02881 ,  H03H9/42 ,  H03H9/6486 ,  H03H9/72

摘要： Acoustic waveguides, acoustic filters and acoustic reflectors are based upon the discovery of increased acoustic wave velocity in materials such as lithium niobate and lithium tantalate into which a metal such as titanium, nickel or chromium has been diffused. Velocity increases larger than 1 percent have been obtained; and negligible effect on acoustic loss is incurred thereby. The technique and the resulting devices result in a simpler structure than provided by the metallic strips or the ion beam etched surface regions of prior acoustic devices in which velocity perturbations of comparable magnitude have been desired.

摘要翻译： 声波导，声学滤波器和声反射器基于在诸如钛，镍或铬的金属已经扩散到其中的诸如铌酸锂和钽酸锂的材料中增加的声波速度的发现。 速度提高大于1％已经获得; 并且由此产生对声学损失的微不足道的影响。 该技术和所得到的装置导致比先前的声学装置的金属条或离子束蚀刻的表面区域提供的结构更简单的结构，其中期望具有相当大小的速度扰动。

公开(公告)号：US3936774A

公开(公告)日：1976-02-03

申请号：US450966

申请日：1974-03-14

申请人： Donald Williams Mellon ,  Richard Alan Kempf

发明人： Donald Williams Mellon ,  Richard Alan Kempf

IPC分类号： G10K11/36 ,  H03H9/02 ,  H03H9/145 ,  H03H9/26 ,  H03H9/30 ,  H04R17/10

CPC分类号： H03H9/14555 ,  G10K11/36 ,  H03H9/02866 ,  H03H9/14544 ,  H03H9/14517

摘要： Disclosed is a surface wave device comprising one transducer having its fundamental resonant frequency at a subharmonic of the device operating frequency and a second transducer having its fundamental resonant frequency at the device operating frequency. Both transducers respond to surface waves at the operating frequency. Only the harmonic operated transducer responds to bulk waves at the operating frequency. Thus, signal coupled from one transducer to the other at the operating frequency contains no noise generated by bulk mode coupling.

摘要翻译： 公开了一种表面波装置，其包括一个换能器，其基本共振频率处于器件工作频率的次谐波处，而第二换能器具有在器件工作频率下的基本谐振频率。 两个传感器在工作频率下响应于表面波。 只有谐波操作的传感器以工作频率响应体波。 因此，在工作频率处从一个换能器耦合到另一个换能器的信号不包含体模耦合产生的噪声。

公开(公告)号：US3935564A

公开(公告)日：1976-01-27

申请号：US528742

申请日：1974-12-02

申请人： Calvin F. Quate ,  Thomas W. Grudkowski

发明人： Calvin F. Quate ,  Thomas W. Grudkowski

IPC分类号： G10K11/36 ,  G11C8/00 ,  G11C27/00 ,  H04N3/10 ,  G11C13/00 ,  G11C19/00

CPC分类号： G11C8/005 ,  G10K11/36 ,  G11C27/00 ,  H04N3/10

摘要： Charge storage and monitoring apparatus including a barrier electrode capable of supporting a charge adjacent a piezoelectric semiconductor to control the depletion layer and provide an output signal related to an acoustic wave in the semiconductor and the applied charge.

摘要翻译： 电荷存储和监测装置包括能够支持邻近压电半导体的电荷的阻挡电极以控制耗尽层并提供与半导体中的声波相关的输出信号和所施加的电荷。

公开(公告)号：US3908137A

公开(公告)日：1975-09-23

申请号：US42003873

申请日：1973-12-26

申请人： MAGNAVOX CO

发明人： HUNSINGER BILL J ,  CHO FREDERICK Y ,  FUGIT BRIAN B

IPC分类号： G10K11/36 ,  H03H9/02 ,  H03H9/145 ,  H01L41/08 ,  H03H7/30

CPC分类号： H03H9/0285 ,  G10K11/36 ,  H03H9/14508 ,  H03H9/1455

摘要： Apparatus and method for reduction of triple transit signals generated by the interaction between acoustic surface waves and transducer elements in acoustic surface wave devices. Input transducers are positioned such that the transit time between a first input transducer and an output transducer is delayed by a quarter of a wavelength relative to the transit time between a second input transducer and the output transducer. The input signal to the second input transducer is delayed externally by a length of time equivalent to a quarter of a wavelength. The output transducer signals can therefore be combined to produce an enhanced output signal. Acoustic surface waves generated at an output transducer and returned to the output transducer after interaction with the first input transducer will be retarded two quarter wave lengths (one for each transit) as compared to acoustic surface simultaneously generated at an output transducer and returned to the output transducer after interaction with the second input transducer. Because of the phase relationship, the signals generated at the output transducers as a result of acoustic wave interactions with the two input transducers will cancel when combined.

摘要翻译： 用于减少由声表面波和声表面波装置中的换能器元件之间的相互作用产生的三重转接信号的装置和方法。 输入传感器被定位成使得第一输入传感器和输出传感器之间的传播时间相对于第二输入传感器和输出传感器之间的传播时间被延迟四分之一波长。 到第二输入传感器的输入信号在外部延迟等于四分之一波长的时间长度。 因此，可以将输出的换能器信号组合以产生增强的输出信号。 与输出变换器相互作用时返回到输出变换器的声表面波与在输出变换器同时产生的声表面相比将延迟两个四分之一波长（每个转接一个） 换能器与第二输入换能器相互作用。 由于相位关系，当与两个输入换能器的声波相互作用时，在输出换能器处产生的信号在组合时将被取消。