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    Microfabricated acoustic transducer with a multilayer electrode
    1.
    发明申请
    Microfabricated acoustic transducer with a multilayer electrode 有权
    具有多层电极的微型声学换能器

    公开(公告)号：US20090080292A1

    公开(公告)日：2009-03-26

    申请号：US11903329

    申请日：2007-09-20

    申请人： Paul A. Wagner ,  Igal Ladabaum ,  Kathy J. Jackson

    发明人： Paul A. Wagner ,  Igal Ladabaum ,  Kathy J. Jackson

    IPC分类号： H04R19/00 ,  H04R31/00 ,  H01G7/00

    CPC分类号： B81B3/0021 ,  B06B1/0292 ,  B81B2201/0257 ,  Y10T29/43 ,  Y10T29/49005

    摘要： In a capacitive membrane ultrasound transducer, one or more electrodes include multiple layers of conductive or semiconductive material. The layers may be positioned adjacent an insulator or cavity in an arrangement to reduce electrical degradation. For example, a conductive layer with less work function and less resistivity is spaced from an insulator by a conductive layer with more work function and more resistivity. The different layers of electrode material may provide for less electrical degradation due to the type of material used and relative location.

    摘要翻译： 在电容膜超声换能器中，一个或多个电极包括多层导电或半导体材料。 层可以在布置中邻近绝缘体或空腔定位以减少电气劣化。 例如，具有较小功函数和较小电阻率的导电层通过具有更多功函数和更大电阻率的导电层与绝缘体隔开。 电极材料的不同层可以由于所用材料的类型和相对位置而提供更少的电气降解。

    Microfabricated acoustic transducer with a multilayer electrode
    2.
    发明授权
    Microfabricated acoustic transducer with a multilayer electrode 有权
    具有多层电极的微型声学换能器

    公开(公告)号：US07839722B2

    公开(公告)日：2010-11-23

    申请号：US11903329

    申请日：2007-09-20

    申请人： Paul A. Wagner ,  Igal Ladabaum ,  Kathy J. Jackson

    发明人： Paul A. Wagner ,  Igal Ladabaum ,  Kathy J. Jackson

    IPC分类号： H04R19/00

    CPC分类号： B81B3/0021 ,  B06B1/0292 ,  B81B2201/0257 ,  Y10T29/43 ,  Y10T29/49005

    摘要： In a capacitive membrane ultrasound transducer, one or more electrodes include multiple layers of conductive or semiconductive material. The layers may be positioned adjacent an insulator or cavity in an arrangement to reduce electrical degradation. For example, a conductive layer with less work function and less resistivity is spaced from an insulator by a conductive layer with more work function and more resistivity. The different layers of electrode material may provide for less electrical degradation due to the type of material used and relative location.

    摘要翻译： 在电容膜超声换能器中，一个或多个电极包括多层导电或半导体材料。 层可以在布置中邻近绝缘体或空腔定位以减少电气劣化。 例如，具有较小功函数和较小电阻率的导电层通过具有更多功函数和更大电阻率的导电层与绝缘体隔开。 电极材料的不同层可以由于所用材料的类型和相对位置而提供更少的电气降解。

    Microfabricated ultrasonic transducer with suppressed substrate modes
    3.
    发明授权
    Microfabricated ultrasonic transducer with suppressed substrate modes 失效
    具有抑制衬底模式的微型超声波换能器

    公开(公告)号：US06862254B2

    公开(公告)日：2005-03-01

    申请号：US09971095

    申请日：2001-10-03

    申请人： Igal Ladabaum ,  Paul A. Wagner

    发明人： Igal Ladabaum ,  Paul A. Wagner

    IPC分类号： B06B1/02 ,  B06B1/06 ,  H04R17/00

    CPC分类号： B06B1/0681 ,  B06B2201/76

    摘要： The present invention provides a microfabricated acoustic transducer with suppressed substrate modes. The modes are suppressed by either thinning the substrate such that a longitudinal ringing mode occurs outside of the frequency band of interest or by applying a judiciously designed damping material on the backside of the transducer substrate.

    摘要翻译： 本发明提供了一种具有抑制衬底模式的微制造声学换能器。 通过使衬底变薄来抑制这些模式，使得纵向振铃模式发生在感兴趣的频带之外，或通过在换能器基板的背面施加明智地设计的阻尼材料。

    Method and apparatus for improving the performance of capacitive acoustic transducers using bias polarity control and multiple firings
    4.
    发明授权
    Method and apparatus for improving the performance of capacitive acoustic transducers using bias polarity control and multiple firings 有权
    用于改善使用偏置极性控制和多次发射的电容式声换能器的性能的方法和装置

    公开(公告)号：US07780597B2

    公开(公告)日：2010-08-24

    申请号：US10819094

    申请日：2004-04-05

    申请人： Satchi Panda ,  Paul A Wagner ,  Christopher M Daft ,  Igal Ladabaum

    发明人： Satchi Panda ,  Paul A Wagner ,  Christopher M Daft ,  Igal Ladabaum

    IPC分类号： A61B8/00

    CPC分类号： G01S15/8959 ,  B06B1/0292 ,  G01S7/52038 ,  G01S7/52047 ,  G01S7/52077 ,  G01S15/8909 ,  G01S15/8995

    摘要： Presented is a method of operating a capacitive microfabricated ultrasonic transducer (cMUT) array with multiple firings of varying bias voltage polarity patterns to improve its performance in imaging non-linear media, such as in contrast agent imaging or tissue harmonic imaging. Additionally, transducers incorporating the method are provided. The method of cMUT operation and the corresponding cMUT does not require pre-distortion or phase inversion of the transmit signal and can achieve an improvement in the elevation focus of the cMUT, as compared to the elevation focus that a single firing can achieve. Further, the method of operating the cMUT minimizes the deleterious effects that result from insulators being subjected to high electric fields.

    摘要翻译： 提出了一种操作具有改变的偏置电压极性图案的多次发射的电容微型超声波换能器（cMUT）阵列的方法，以提高其在成像非线性介质中的性能，例如对比剂成像或组织谐波成像。 另外，提供了包含该方法的换能器。 与单次点火可以实现的高程焦点相比，cMUT操作的方法和相应的cMUT不需要发射信号的预失真或相位反转，并且可以实现cMUT的高程焦点的改善。 此外，操作cMUT的方法使由绝缘子经受高电场导致的有害影响最小化。

    Electric circuit for tuning a capacitive electrostatic transducer
    5.
    发明授权
    Electric circuit for tuning a capacitive electrostatic transducer 有权
    用于调谐电容式静电传感器的电路

    公开(公告)号：US07670290B2

    公开(公告)日：2010-03-02

    申请号：US10803808

    申请日：2004-03-17

    申请人： John A. Hossack ,  Brett Bymaster ,  Igal Ladabaum ,  Paul A. Wagner ,  Christopher M. W. Daft

    发明人： John A. Hossack ,  Brett Bymaster ,  Igal Ladabaum ,  Paul A. Wagner ,  Christopher M. W. Daft

    IPC分类号： A61B8/00

    CPC分类号： B06B1/0292 ,  A61B8/4483 ,  G01S7/52079

    摘要： An electrostatic transducer circuit and method of tuning the same, in which a balancing circuit is inserted into the electrostatic transducer circuit, is described. The electrostatic transducer circuit generally includes transmit circuitry, receive circuitry, a capacitive electrostatic transducer and the balancing circuit. The balancing circuit can include, either singly or in combination, an inductance and a negative capacitance. The balancing inductance is tuned to counteract the negative reactance of the capacitive electrostatic transducer at a desired operating frequency and can be inserted into the transmit circuitry and/or the receive circuitry. The balancing negative capacitance is tuned to counteract the capacitance of the capacitive electrostatic transducer and can be inserted into the receive circuitry and/or the transmit circuitry. The transmit circuitry can be isolated from the receive circuitry, and vice versa, once the balancing circuit has been inserted. Isolation can be achieved by switching the electrostatic transducer circuit between transmit and receive modes of operation, or by providing separate transmit and receive electrode subsets.

    摘要翻译： 描述了一种静电换能器电路及其调谐方法，其中平衡电路插入到静电换能器电路中。 静电换能器电路通常包括发射电路，接收电路，电容式静电变换器和平衡电路。 平衡电路可以单独地或组合地包括电感和负电容。 调整平衡电感以抵消在期望的工作频率下的电容式静电换能器的负电抗并且可以插入到发射电路和/或接收电路中。 调整平衡负电容以抵消电容式静电变换器的电容，并可将其插入接收电路和/或发射电路。 一旦平衡电路被插入，发射电路可以与接收电路隔离，反之亦然。 可以通过在发射和接收工作模式之间切换静电转换器电路，或通过提供单独的发射和接收电极子集来实现隔离。

    Microfabricated acoustic transducer with suppressed substrate modes
    6.
    发明授权
    Microfabricated acoustic transducer with suppressed substrate modes 有权
    具有抑制衬底模式的微型声学传感器

    公开(公告)号：US06714484B2

    公开(公告)日：2004-03-30

    申请号：US10280317

    申请日：2002-10-25

    申请人： Igal Ladabaum ,  Paul A. Wagner

    发明人： Igal Ladabaum ,  Paul A. Wagner

    IPC分类号： H04R1700

    CPC分类号： B06B1/0681 ,  B06B2201/76

    摘要： A microfabricated acoustic transducer with suppressed substrate modes includes a diaphragm containing an upper electrode suspended above a substrate containing a lower electrode; the substrate may or may not contain electronic circuits. The substrate modes are suppressed by either thinning the substrate such that a longitudinal ringing mode occurs outside of the frequency band of interest or applying a judiciously designed damping material that absorbs acoustic energy from the substrate on the backside of the transducer substrate, or by both thinning the substrate and applying the damping material. The damping material has an acoustic impedance that matches the acoustic impedance of the substrate and is lossy.

    摘要翻译： 具有抑制衬底模式的微加压声换能器包括：隔膜，其包含悬浮在含有下电极的衬底上方的上电极; 衬底可以包含或可以不包含电子电路。 通过使衬底变薄来抑制衬底模式，使得纵向振铃模式发生在感兴趣的频带之外，或施加明智地设计的阻尼材料，其从换能器衬底的背面上的衬底吸收声能，或者通过减薄 衬底和施加阻尼材料。 阻尼材料具有与基底的声阻抗匹配的声阻抗并且是有损耗的。

    Microfabricated ultrasonic transducers with bias polarity beam profile control and method of operating the same
    9.
    发明授权
    Microfabricated ultrasonic transducers with bias polarity beam profile control and method of operating the same 有权
    具有偏置极性光束轮廓控制的微型超声换能器及其操作方法

    公开(公告)号：US07087023B2

    公开(公告)日：2006-08-08

    申请号：US10367106

    申请日：2003-02-14

    申请人： Christopher M. W. Daft ,  Paul A. Wagner ,  Igal Ladabaum

    发明人： Christopher M. W. Daft ,  Paul A. Wagner ,  Igal Ladabaum

    IPC分类号： A61B8/14

    CPC分类号： G01S15/8925 ,  B06B1/0292 ,  G01S7/52046 ,  G10K11/341

    摘要： A capacitive microfabricated ultrasonic transducer with control of elevation phase through alternating bias polarity is disclosed. Such control of elevation phase results in simple ultrasonic probes with excellent slice thickness attributes. Furthermore, tight spatial variation of phase results in an effective way to achieve transmit aperture and apodization control. Further still, such capacitive microfabricated ultrasonic transducers can achieve elevation focus without the need of a lossy mechanical lens.

    摘要翻译： 公开了一种通过交替偏置极性控制高程相的电容式微制造超声换能器。 这种升高相位的控制导致具有优异切片厚度属性的简单超声波探头。 此外，相位的紧密空间变化导致实现传输孔径和变迹控制的有效方式。 此外，这种电容微型超声波换能器可以实现仰角，而不需要有损耗的机械透镜。

    Contamination resistant ports for hearing devices
    10.
    发明授权
    Contamination resistant ports for hearing devices 有权
    用于听觉设备的防污端口

    公开(公告)号：US08457336B2

    公开(公告)日：2013-06-04

    申请号：US12819066

    申请日：2010-06-18

    申请人： Igal Ladabaum ,  Stuart Wenzel ,  Ganapati Mauze ,  Ian Michael Day ,  Leland Stock ,  Paul Wagner

    发明人： Igal Ladabaum ,  Stuart Wenzel ,  Ganapati Mauze ,  Ian Michael Day ,  Leland Stock ,  Paul Wagner

    IPC分类号： H04R25/00

    CPC分类号： H04R25/656 ,  H04R25/602 ,  H04R25/654 ,  H04R2225/023 ,  Y10T29/49005

    摘要： An in-canal hearing device includes a receiver, battery, and microphone assembly with a housing. The housing has an air and sound opening which is covered with a structure to inhibit the entry of cerumen and moisture. The structure may be in the form of an end cap having passages with walls which are both hydrophobic and oleophobic to prevent the entry of water, cerumen and other liquids. The structure may also include a flexible tube or a rigid perforated shell surrounding the passages that inhibit the deposition of solid cerumen and other debris onto the passages.

    摘要翻译： 管内听力装置包括具有壳体的接收器，电池和麦克风组件。 外壳具有空气和声音开口，覆盖有结构以抑制耳垢和水分的进入。 结构可以是端盖的形式，其具有通道，其具有疏水性和疏油性的壁，以防止水，耳垢和其它液体的进入。 结构还可以包括柔性管或围绕通道的刚性穿孔壳，其阻止固体耳垢和其它碎屑沉积在通道上。