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    Multilayer piezoelectric structure with uniform electric field
    4.
    发明授权
    Multilayer piezoelectric structure with uniform electric field 有权
    具有均匀电场的多层压电结构

    公开(公告)号：US06822374B1

    公开(公告)日：2004-11-23

    申请号：US09712687

    申请日：2000-11-15

    申请人： Lowell Scott Smith ,  Douglas Glenn Wildes ,  Venkat Subramaniam Venkataramani

    发明人： Lowell Scott Smith ,  Douglas Glenn Wildes ,  Venkat Subramaniam Venkataramani

    IPC分类号： H01L4108

    CPC分类号： B06B1/064 ,  H04R17/00

    摘要： An ultrasound transducer element incorporates material of low dielectric constant to confine the electric field of a stack of piezoelectric ceramic layers. Edge segments made of material having a low dielectric constant and extending in the thickness direction are formed at opposing ends of the multilayer structure. These regions of low dielectric constant material confine the electric field to the piezoelectric ceramic material of high dielectric constant, where it remains directed vertically. In this way, when a voltage is applied between the electrodes, the piezoelectrically induced strains are almost entirely vertical. Spurious modes are therefore substantially reduced.

    摘要翻译： 超声换能器元件结合了低介电常数的材料，以限制一叠压电陶瓷层的电场。 在多层结构的相对端形成由具有低介电常数并在厚度方向上延伸的材料制成的边缘段。 低介电常数材料的这些区域将电场限制在高介电常数的压电陶瓷材料上，并保持垂直方向。 以这种方式，当在电极之间施加电压时，压电诱发的应变几乎完全垂直。 因此，杂散模式大大减少。

    High-density cable and method therefor
    5.
    发明授权
    High-density cable and method therefor 有权
    高密度电缆及其方法

    公开(公告)号：US06559389B1

    公开(公告)日：2003-05-06

    申请号：US09617941

    申请日：2000-08-25

    申请人： William Paul Kornrumpf ,  Lowell Scott Smith ,  Douglas Glenn Wildes

    发明人： William Paul Kornrumpf ,  Lowell Scott Smith ,  Douglas Glenn Wildes

    IPC分类号： H05K103

    CPC分类号： H05K1/118 ,  H01B7/0892 ,  Y10T29/49124

    摘要： A high-density cable of a type suitable for transmitting ultrasound signals from an ultrasonic probe to multiplexing circuitry during a medical ultrasound procedure is provided. The cable includes one or more flexible circuits arranged within a flexible sheath that surrounds and confines the flexible circuits. Each flexible circuit includes an elongate flexible substrate with oppositely-disposed surfaces and multiple conductors on at least one of these surfaces. The opposing longitudinal ends of the substrate define integral connectors for connecting with respective output connectors and/or electronic devices, such as an ultrasonic probe or multiplexing circuitry.

    摘要翻译： 提供了一种适用于在医疗超声程序期间将超声波信号从超声波探头发射到复用电路的高密度电缆。 电缆包括布置在柔性护套内的柔性电路，其围绕并限制柔性电路。 每个柔性电路包括具有相对布置的表面的细长柔性基板和在这些表面中的至少一个上的多个导体。 衬底的相对的纵向端部限定了用于与相应的输出连接器和/或诸如超声波探头或多路复用电路的电子设备连接的整体连接器。

    Imaging system with multiplexer for controlling a multi-row ultrasonic transducer array
    9.
    发明授权
    Imaging system with multiplexer for controlling a multi-row ultrasonic transducer array 失效
    具有用于控制多行超声波换能器阵列的多路复用器的成像系统

    公开(公告)号：US5897501A

    公开(公告)日：1999-04-27

    申请号：US26660

    申请日：1998-02-20

    申请人： Douglas Glenn Wildes ,  Gregory Allen Lillegard

    发明人： Douglas Glenn Wildes ,  Gregory Allen Lillegard

    IPC分类号： A61B8/00 ,  G01S7/52 ,  G01S15/89 ,  G10K11/34

    CPC分类号： G01S15/8925 ,  A61B8/4494 ,  G01S15/8997 ,  G01S7/52049 ,  G10K11/341

    摘要： In an ultrasound imaging system, a multiplexer connects a beamformer to a multi-row transducer array, where the array has more electrically independent transducer elements than the beamformer has channels, so as to provide dynamic selection and beamforming control of multi-row apertures. The multiplexer allows the active aperture to be scanned along at least one axis of the array and allows the shape of the active aperture to be varied electronically. The multiplexer, which supports transmit and receive apertures appropriate for synthetic aperture beamforming, is of modular construction, enabling multiplexers appropriate for transducer arrays with various numbers of rows and columns of elements to be easily assembled from a standard set of parts. The multiplexer is physically designed as a passive backplane into which various switch cards can be plugged. The card connectors are arranged in two parallel columns. Traces from system channels are distributed on the backplane; coaxial leads from transducer elements are connected to the switch cards.

    摘要翻译： 在超声成像系统中，多路复用器将波束形成器连接到多行换能器阵列，其中阵列具有比波束形成器具有通道更多的电独立换能器元件，以便提供多列孔径的动态选择和波束成形控制。 多路复用器允许沿着阵列的至少一个轴扫描有效孔径，并允许主动孔径的形状以电子方式变化。 支持适合于合成孔径波束形成的发射和接收孔径的多路复用器是模块化构造，使得适合于具有各种数量的行和列的元件的换能器阵列的多路复用器能够容易地从标准的部件组合而成。 多路复用器被物理设计为可以插入各种开关卡的无源底板。 卡连接器布置成两个平行的列。 来自系统通道的轨迹分布在背板上; 换能器元件的同轴引线连接到开关卡。

    Multi-row ultrasonic transducer array with uniform elevator beamwidth
    10.
    发明授权
    Multi-row ultrasonic transducer array with uniform elevator beamwidth 失效
    具有均匀电梯波束宽度的多列超声波换能器阵列

    公开(公告)号：US5882309A

    公开(公告)日：1999-03-16

    申请号：US852810

    申请日：1997-05-07

    申请人： Richard Yung Chiao ,  Douglas Glenn Wildes

    发明人： Richard Yung Chiao ,  Douglas Glenn Wildes

    IPC分类号： G01N29/24 ,  A61B8/00 ,  G01S7/52 ,  G01S15/89 ,  G06T1/00 ,  H04R1/00 ,  H04R1/34 ,  H04R17/00

    CPC分类号： G01S15/8925 ,  G01S7/52046

    摘要： A multi-row ultrasound transducer array having a central row of transducer elements and a pair of outermost rows of transducer elements on opposing sides of the central row. The corresponding elements of the outermost rows are connected in parallel to a respective signal lead. The area of each element in the central row is less than the combined area of each pair of elements of the outermost rows. The greater total area of the combined elements of the outermost rows as compared to the area of each element of the central row provides improved elevation performance (thinner and more uniform image slice, greater contrast resolution), especially in the very near field, as compared to conventional transducers. The array may further include one or more pairs of rows of elements intermediate the central row and the respective outermost rows. The corresponding elements of the intermediate rows are connected in parallel to respective signal leads. The combined area of each pair of elements of the intermediate rows is less than the combined area of each pair of elements of the outermost rows, but greater than the area of a central row element.

    摘要翻译： 一种多列超声换能器阵列，其具有中心排的换能器元件和在中心排的相对侧上的一对最外面的换能器元件。 最外面的行的相应元件与相应的信号引线并联连接。 中央行中的每个元素的面积小于最外面行的每对元素的组合面积。 与中央行的每个元件的面积相比，最外面行的组合元件的总面积更大，提供了改进的高程性能（更薄和更均匀的图像切片，更大的对比度分辨率），特别是在非常近的场域 传统传感器。 阵列还可以包括在中心行和相应的最外行之间的一对或多对元件行。 中间行的相应元件并联连接到相应的信号引线。 中间行的每对元素的组合面积小于最外面行的每对元素的组合面积，但是大于中央行元素的面积。