公开(公告)号：US4217564A

公开(公告)日：1980-08-12

申请号：US942622

申请日：1978-09-15

申请人： Jean-Michel Autran

发明人： Jean-Michel Autran

IPC分类号： H03H9/02 ,  H03H9/64 ,  H03H9/72 ,  H03H9/30 ,  H01L41/10 ,  H03H9/26 ,  H03H9/32

CPC分类号： H03H9/44 ,  H03H9/02779 ,  H03H9/02968

摘要： The treatment is directly effected on the waves propagated. Zones, for creating interruptions in propagation, are created on the useful surface of the propagation material. Several parallel tracks for propagating the elastic waves are thus delimited by these zones, the length and width of which are selected in dependance upon the required treatment.

摘要翻译： 治疗直接影响传播的波。 在传播材料的有用表面上创建用于创建传播中断的区域。 因此，用于传播弹性波的几个平行的轨道由这些区域限定，其长度和宽度根据所需的处理选择。

公开(公告)号：US4217563A

公开(公告)日：1980-08-12

申请号：US642802

申请日：1975-12-22

申请人： Christopher R. Vale

发明人： Christopher R. Vale

IPC分类号： G01S13/44 ,  G06G7/195 ,  H03H9/30 ,  H01L41/22 ,  H03H9/04 ,  H03H9/26

CPC分类号： G06G7/195 ,  G01S13/44 ,  Y10T29/42 ,  Y10T29/49005

摘要： A surface wave phase correlator comprises a pair of substantially identical launch and receiving filter electrode patterns disposed on a common piezoelectric substrate. The correlator is employed with receiving and processing circuitry in a monopulse radar system to provide relative phase information for target calculations by a digital processor. Fast rise and fall times for the correlator output signals enable rapid digital processing of incoming target signals.

摘要翻译： 表面波相位相关器包括一对基本相同的发射和接收滤波器电极图案，设置在公共压电基片上。 相关器与单脉冲雷达系统中的接收和处理电路一起使用，以提供用于数字处理器的目标计算的相对相位信息。 相关器输出信号的快速上升和下降时间可以实现对目标信号的快速数字处理。

公开(公告)号：US4207546A

公开(公告)日：1980-06-10

申请号：US967323

申请日：1978-12-07

申请人： Thomas W. Grudkowski

发明人： Thomas W. Grudkowski

IPC分类号： H03H9/25 ,  G06G7/19 ,  G06G7/195 ,  H03H3/08 ,  H03H9/42 ,  H03H7/08 ,  H01L27/20 ,  H03H9/26 ,  H03H9/30

CPC分类号： G06G7/195

摘要： A SAW signal processor includes a plurality of FET taps having individually programmable source-drain bias which controls both the amplitude and the phase of the mixing efficiency of internal product mixing of waves passing beneath the tap, in dependence upon the amplitude and polarity of the bias, the gates of the FETs may be interconnected so as to provide a summation of correlation at the output. Embodiments include multi-FET taps formed on substrates that are both semiconductive and piezoelectric, such as n-type epitaxial gallium aresenide, and ZnO coated silicon. Simple biphase and weighted biphase of phase-shifted tap pairs, for complete phase control, are disclosed.

摘要翻译： SAW信号处理器包括具有单独可编程源极 - 漏极偏置的多个FET抽头，其根据偏置的幅度和极性控制通过抽头下方的波的内部产品混合的混合效率的幅度和相位 ，FET的栅极可以互连，以便在输出端提供相关的和。 实施例包括形成在半导体和压电的衬底上的多FET抽头，例如n型外延镓砷化物和ZnO包覆的硅。 公开了用于完全相位控制的相移抽头对的简单双相和加权双相。

公开(公告)号：US4207545A

公开(公告)日：1980-06-10

申请号：US936984

申请日：1978-08-25

申请人： Thomas W. Grudkowski ,  Gary K. Montress ,  Thomas M. Reeder

发明人： Thomas W. Grudkowski ,  Gary K. Montress ,  Thomas M. Reeder

IPC分类号： G06G7/195 ,  H03H9/72 ,  H04J3/04 ,  H03H9/26 ,  H03H9/30 ,  H03H9/32

CPC分类号： H04J3/047 ,  G06G7/195 ,  H03H9/72

摘要： Signals extracted from the taps of a surface acoustic wave (SAW) device, as a consequence of a single wave propogating therein or as a consequence of interaction between a pair of waves propagating therein, are processed by linearly-controlled nonlinear product mixing and/or amplifying devices, to provide output signals in a serial chain of chips of RF, the magnitude of chips being dependent upon unique, selected bias applied to corresponding ones of the devices. The devices may be diodes operating in a bias range to provide impedence greater than the capacitive reactance impedance of the taps to which they are attached, thereby providing a linear RF voltage to DC bias current characteristic, while at the same time providing a nonlinear DC voltage to DC current characteristic for RF product mixing (where used); or the devices may comprise transistors, either field effect or bipolar, with similar suitable bias considerations when linearly-controlled product mixing is desired. Applications, with or without output frequency isolation from input frequencies, include time division multiplexing of DC signals (such as transducer output signals), and transversal filtering, of the type useful in correlation or other wave or coded signal analysis.

摘要翻译： 从表面声波（SAW）装置的抽头中提取的信号由于在其中传播单波或由于在其中传播的一对波之间的相互作用而产生的结果，被线性控制的非线性产物混合和/或 放大器件，以在串联的RF芯片链中提供输出信号，芯片的幅度取决于应用于相应器件的唯一选择的偏置。 器件可以是在偏置范围内工作的二极管，以提供大于其所连接的抽头的容抗电阻的阻抗，从而提供直流偏压电流特性的线性RF电压，同时提供非线性直流电压 到RF产品混合的直流电流特性; 或者当需要线性控制的产品混合时，器件可以包括场效应或双极型晶体管，具有类似的合适的偏置考虑。 具有或不具有与输入频率的输出频率隔离的应用包括在相关或其它波或编码信号分析中有用的类型的DC信号（例如换能器输出信号）和横向滤波的时分复用。

公开(公告)号：US4162465A

公开(公告)日：1979-07-24

申请号：US833028

申请日：1977-09-14

申请人： Bill J. Hunsinger ,  Kentaro Hanma

发明人： Bill J. Hunsinger ,  Kentaro Hanma

IPC分类号： H03H9/02 ,  H03H9/145 ,  H03H9/04 ,  H01L41/10 ,  H03H9/30 ,  H03H9/32

CPC分类号： H03H9/14552 ,  H03H9/02842

摘要： Applicants discovered that by employing selected transducer geometries, such as unbalanced dual-finger geometries, certain reflections, called "Mechanical electrical loaded" (MEL) reflections, can be generated which tend to cancel reflected waves inherently generated by surface acoustic wave devices.In particular, the disclosure is directed to a transducer for a surface acoustic wave device adapted for coupling to an electrical load and/or source. A pair of interdigitated comb electrodes are formed on an acoustic wave propagating substrate, for example a piezoelectric substrate. Means, such as input or output terminals, are provided for applying an electrical load and/or source across the pair of comb electrodes. Each of the comb electrodes has a plurality of interdigitated electrode fingers. The width of at least some of the adjacent fingers of the electrodes are different and are selected as a function of the impedance of the load and/or source to produce mechanical electrical loaded (MEL) reflections in said substrate which tend to cancel regeneration wave (RW) reflections generated at the transducer in the substrate. In the preferred embodiment of the invention, each of the comb electrodes has at least two adjacent electrode fingers of different widths, and preferably has a plurality of adjacent finger pairs of different widths.

摘要翻译： 申请人发现，通过采用所选择的传感器几何形状，例如不平衡的双手指几何形状，可以产生一些称为“机械电加载”（MEL）反射的某些反射，这些反射倾向于消除表面声波器件固有地产生的反射波。

公开(公告)号：US4160219A

公开(公告)日：1979-07-03

申请号：US783837

申请日：1977-04-01

申请人： Wilhelm Kuny

发明人： Wilhelm Kuny

IPC分类号： H03H3/08 ,  H03H9/02 ,  H03H9/145 ,  H03H9/04 ,  H01L41/10 ,  H03H9/26 ,  H03H9/30

CPC分类号： H03H9/1455 ,  H03H9/02842 ,  H03H9/02858 ,  H03H9/1452

摘要： The invention relates to transducer electrodes for filters or delay lines using surface wave principles on piezoelectric substrates wherein parallel mounted electrodes have interdigital fingers extending toward the electrodes and wherein feeders for the fingers have widths of one half the wave length of the surface wave at the mean filter frequency so as to equalize and eliminate reflections in the device.

公开(公告)号：US4158823A

公开(公告)日：1979-06-19

申请号：US783836

申请日：1977-04-01

申请人： Wilhelm Kuny ,  Karl Langecker

发明人： Wilhelm Kuny ,  Karl Langecker

IPC分类号： H03H3/08 ,  H03H9/02 ,  H03H9/145 ,  H03H9/04 ,  H01L41/10 ,  H03H9/26 ,  H03H9/30

CPC分类号： H03H9/02842 ,  H03H9/02858 ,  H03H9/1452

摘要： Transducer electrodes for filters or delay lines using surface waves wherein the transducers are formed by interdigital conducting films formed on the surface of piezoelectric substrates and wherein the length of the interdigital electrode fingers vary and wherein all of the fingers on at least one side are attached to an enlarged metal area which has a width equivalent to the total width of all of the electrode fingers on this side.

摘要翻译： 用于使用表面波的滤波器或延迟线的传感器电极，其中换能器由形成在压电基片的表面上的叉指导电膜形成，并且其中叉指电极指的长度变化，并且其中至少一侧上的所有指状物附接到 具有与该侧的全部电极指的总宽度相等的宽度的扩大的金属区域。

公开(公告)号：US4146851A

公开(公告)日：1979-03-27

申请号：US810376

申请日：1977-06-23

申请人： Martin E. Dempsey ,  Ching-Wen Lee

发明人： Martin E. Dempsey ,  Ching-Wen Lee

IPC分类号： H03H9/02 ,  H03H9/26 ,  H01L41/10 ,  H03H9/30 ,  H03H9/32

CPC分类号： H03H9/02842

摘要： A sidestepping acoustic surface wave filter device employing a 3 dB multistrip coupler between the input transducer and the offset output transducer. A reflector is located across the track associated with the input transducer in the region adjacent to the output transducer. The 3 dB coupler causes the output transducer and the reflector to receive equal acoustic surface wave energy. The reflector is designed so that the energy reflected by it is equal to the energy returned by the output transducer. Phase shifts produced in the returning acoustic surface waves by the coupler cause the returning acoustic surface waves to be suppressed in the track associated with the input transducer. Thus, triple transit signals are avoided.

公开(公告)号：US4110714A

公开(公告)日：1978-08-29

申请号：US756929

申请日：1977-01-05

申请人： Oberdan W. Otto

发明人： Oberdan W. Otto

IPC分类号： H03H9/02 ,  H03H9/64 ,  H03H9/26 ,  H03H9/04 ,  H03H9/30 ,  H03H9/32

CPC分类号： H03H9/6489 ,  H03H9/02716 ,  H03H9/02881

摘要： A surface acoustic wave device wherein a reflective array is disposed on a surface of material capable of supporting propagating surface acoustic wave energy, the array including a plurality of spaced, parallel elements having longitudinal axes angularly oriented with respect to the direction of a beam path of propagating straight crested phase fronts, the device also including matching structures disposed adjacent the leading and trailing ends of the elements for converting the normal mode, straight crested phase front outside the reflective array region to the normal mode, sawtoothed shaped, phase front within the reflective array region, and the reverse thereof, and thereby avoid diffractive effects at the entry and exit points of the reflective array.

摘要翻译： 一种表面声波装置，其中反射阵列设置在能够支撑传播的声波能量的材料的表面上，该阵列包括多个间隔开的平行元件，其具有相对于光束路径的方向成角度定向的纵向轴线 传播直的峰顶相位，该装置还包括邻近元件的前端和后端设置的匹配结构，用于将反射阵列区域外的正常模式，直的顶峰相位前沿转换成正常模式，在反射器内形成锯齿状的相位前沿 阵列区域和反向，从而避免在反射阵列的入射点和出射点的衍射效应。

公开(公告)号：US4110653A

公开(公告)日：1978-08-29

申请号：US781451

申请日：1977-03-25

申请人： Pierre Hartemann

发明人： Pierre Hartemann

IPC分类号： H03H9/25 ,  H01L41/00 ,  H03H3/08 ,  H03H3/10 ,  H03H9/00 ,  H03H9/02 ,  H03H9/30 ,  H03H9/42 ,  H03L1/02 ,  H01L41/10

CPC分类号： H03L1/028 ,  H01L41/00 ,  H03H3/10 ,  H03H9/02551 ,  H03H9/30 ,  H03H9/42

摘要： The present invention relates to the modification of the temperature-induced drift in propagation time of surface elastic waves. The invention proposes to achieve this modification by selecting a suitable crystal cut of the crystalline substrate, and carrying out a localized ion bombardment of the surface at which the elastic waves propagate.

摘要翻译： 本发明涉及表面弹性波的传播时间的温度诱导漂移的修改。 本发明提出通过选择晶体衬底的合适的晶体切割并且进行弹性波传播的表面的局部离子轰击来实现该修改。