知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

148 条记录 (耗时 0.019 秒)

    HIGH-FREQUENCY ULTRASOUND IMAGING SYSTEM
    3.
    发明申请
    HIGH-FREQUENCY ULTRASOUND IMAGING SYSTEM 审中-公开
    高频超声成像系统

    公开(公告)号：US20120016243A1

    公开(公告)日：2012-01-19

    申请号：US13146620

    申请日：2010-02-26

    申请人： Jeremy Brown ,  Robert Bruce Alexander Adamson

    发明人： Jeremy Brown ,  Robert Bruce Alexander Adamson

    IPC分类号： A61B8/14 ,  A61B8/12

    CPC分类号： G10K11/346 ,  A61B1/00 ,  G10K11/36 ,  H03H9/0296

    摘要： A high frequency ultrasound analog beamformer comprises a linear array of surface acoustic wave (SAW) devices formed on a single crystal piezoelectric substrate, such as a PMN-PT single crystal piezoelectric substrate. Each SAW device comprises ultrasound input and output electrode structures separated by a variable delay structure. The beamformer further comprises a delay controller operably connected to each variable delay structure to control the delay of each SAW device to dynamically focus signals received at each input electrode.

    摘要翻译： 高频超声波模拟波束形成器包括形成在诸如PMN-PT单晶压电基片的单晶压电基片上的表面声波（SAW）器件的线性阵列。 每个SAW器件包括由可变延迟结构隔开的超声输入和输出电极结构。 波束形成器还包括可操作地连接到每个可变延迟结构的延迟控制器，以控制每个SAW器件的延迟以动态地聚焦在每个输入电极处接收的信号。

    Plate-mode ultrasonic structure including a gel
    4.
    发明授权
    Plate-mode ultrasonic structure including a gel 失效
    板状超声波结构包括凝胶

    公开(公告)号：US5212988A

    公开(公告)日：1993-05-25

    申请号：US775631

    申请日：1991-10-10

    申请人： Richard M. White ,  Stuart W. Wenzel ,  Benedict J. Costello

    发明人： Richard M. White ,  Stuart W. Wenzel ,  Benedict J. Costello

    IPC分类号： B01L3/00 ,  G01H13/00 ,  G01H17/00 ,  G01L9/00 ,  G01N29/02 ,  G01P15/08 ,  G10K11/36 ,  H03H9/42

    CPC分类号： G01N29/2437 ,  B01L3/5027 ,  G01H13/00 ,  G01H17/00 ,  G01L9/0025 ,  G01N29/022 ,  G01P15/08 ,  G10K11/36 ,  H03H9/42 ,  B01L2300/0663 ,  B01L2300/1827 ,  B01L2400/0421 ,  G01N2291/014 ,  G01N2291/0255 ,  G01N2291/0256 ,  G01N2291/02818 ,  G01N2291/02827 ,  G01N2291/02854 ,  G01N2291/0427

    摘要： An ultrasonic structure which has a thin planar sheet of material forming a Lamb wave propagation medium The propagation medium is coated with a gel. The structure may also include a Lamb wave generator for generating Lamb waves in the propagation medium and an output device for producing an electrical signal representative of the propagation characteristics of the Lamb waves propagating along the propagation medium. A measuring device can be included to measure selected characteristics of the output electrical signal. The propagation medium has some physical characteristics that are determined by the value of a measurand acting on the medium and the determined physical characteristics determine the propagation characteristics of the Lamb waves which are propagated along the medium. When the sensor is acted on by a measurand to determine the physical characteristics of the propagation medium, the characteristics of the electrical signal are also determined. The measuring device measures the electrical signal and provides an indication of the measurand value.

    摘要翻译： 具有形成兰姆波传播介质的薄平板材料的超声波结构传播介质用凝胶涂覆。 该结构还可以包括用于在传播介质中产生兰姆波的兰姆波发生器和用于产生表示沿着传播介质传播的兰姆波传播特性的电信号的输出装置。 可以包括测量装置来测量输出电信号的选定特性。 传播介质具有由作用在介质上的被测量的值确定的一些物理特性，并且所确定的物理特性确定沿着介质传播的兰姆波的传播特性。 当传感器被被测量作用以确定传播介质的物理特性时，也确定电信号的特性。 测量设备测量电信号并提供被测量值的指示。

    Multiplexed surface acoustical wave apparatus
    5.
    发明授权
    Multiplexed surface acoustical wave apparatus 失效
    多路复用表面声波装置

    公开(公告)号：US4994798A

    公开(公告)日：1991-02-19

    申请号：US339133

    申请日：1989-08-28

    申请人： James R. McColl

    发明人： James R. McColl

    IPC分类号： B60R16/02 ,  B60R16/027 ,  B60R16/03 ,  G10K11/36

    CPC分类号： B60R16/027 ,  G10K11/36 ,  B60R16/0315

    摘要： An apparatus is featured for controlling remote devices. The status or one or more switches associated with remote devices may be transmitted along a single transmission line. One end of the transmission line contains a surface acoustical wave (SAW) delay line. The SAW delay line responds to an interrogation pulse of radio frequency electromagnetic energy with a series of delayed pulses, each of which transmits the status of a switch by means of the presence or absence of the pulse. The SAW delay line and switches are completely passive, requiring no power source. The transmission line may optionally be interrupted and coupled by means of a pair of inductive coils. This offers the potential for rotation, as within a steering column of an automobile, without wear or damage to the transmission line. The other end of the transmission line contains electronic circuitry to provide the interrogation pulse, to decode the return delayed pulses, and to drive other circuitry as required by the switch positions.

    摘要翻译： 一种用于控制远程设备的设备。 与远程设备相关联的状态或一个或多个交换机可以沿着单个传输线传输。 传输线的一端包含表面声波（SAW）延迟线。 SAW延迟线用一系列延迟的脉冲响应射频电磁能量的询问脉冲，每个延迟脉冲通过存在或不存在脉冲来传输开关的状态。 SAW延迟线和开关是完全被动的，不需要电源。 传输线可以可选地被中断并通过一对感应线圈耦合。 这提供了旋转的潜力，如在汽车的转向柱内，没有磨损或损坏传输线。 传输线的另一端包含提供询问脉冲的电子电路，以解码返回延迟的脉冲，并根据开关位置的要求驱动其它电路。

    Surface wave component
    6.
    发明授权
    Surface wave component 失效
    表面波分量

    公开(公告)号：US4344049A

    公开(公告)日：1982-08-10

    申请号：US181825

    申请日：1980-08-27

    申请人： Friedrich Grobe

    发明人： Friedrich Grobe

    IPC分类号： H03H9/145 ,  G10K11/36 ,  H03H3/08 ,  H03H9/02 ,  H03H9/05 ,  H03H9/25 ,  H03H9/42 ,  H03H9/64

    CPC分类号： H03H9/0542 ,  G10K11/36

    摘要： A surface wave component has a pair of interdigital transducer comb structures carried spaced apart on a surface of a substrate which is carried on a base plate. In one embodiment, signal leads extend beneath the substrate to areas adjacent the rear portions of the comb structures and are capacitively coupled thereto via the substrate which is a dielectric. In another embodiment, inductive coupling loops interconnect the rear portions of the comb structures of a respective transducer and another inductive loop is carried on the opposite side of the substrate for signal coupling. In both embodiments both symmetrical and asymmetrical signal coupling is provided by utilizing a grounding plate or layer as a signal lead.

    摘要翻译： 表面波分量具有一对叉指式换能器梳状结构，其在基板的表面上间隔开地承载在基板上。 在一个实施例中，信号引线在衬底下方延伸到与梳状结构的后部相邻的区域，并通过作为电介质的衬底电容耦合到其上。 在另一个实施例中，电感耦合回路将相应换能器的梳状结构的后部部分相互连接，另一个感应环路承载在用于信号耦合的衬底的相对侧上。 在两个实施例中，通过利用接地板或层作为信号引线来提供对称和非对称信号耦合。

    Acoustic periodic structure
    10.
    发明授权
    Acoustic periodic structure 失效
    声周期结构

    公开(公告)号：US4150346A

    公开(公告)日：1979-04-17

    申请号：US849910

    申请日：1977-11-09

    申请人： Bertram A. Auld

    发明人： Bertram A. Auld

    IPC分类号： G10K11/36 ,  H03H9/02 ,  H03H9/145 ,  H03H9/04 ,  H03B5/32 ,  H03H9/20 ,  H03H9/32

    CPC分类号： H03H9/02236 ,  G10K11/36 ,  H03H9/02535 ,  H03H9/14538

    摘要： An acoustic periodic structure for slow wave propagation and filtering having a corrugated surface with traction-free boundaries which can support a horizontally polarized shear surface wave that travels much slower than the bulk shear wave velocity and that exhibits an upper cut-off frequency. Electrodes are located on the tops of the teeth forming the corrugated surface and alternate electrodes are excited out of phase, the distribution of the excitation voltage phases determining the particular mode of resonance.

    摘要翻译： 用于慢波传播和滤波的声周期结构具有波纹表面，其具有无牵引力的边界，其可以支撑行进比体积剪切波速度慢得多且呈现上截止频率的水平偏振剪切表面波。 电极位于形成波纹表面的齿的顶部，并且交替的电极异相激发，激励电压相的分布确定特定共振模式。