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72 条记录 (耗时 0.023 秒)

    Bonded wafer SAW filters and methods
    44.
    发明授权
    Bonded wafer SAW filters and methods 有权
    粘结晶片SAW滤波器和方法

    公开(公告)号：US08035464B1

    公开(公告)日：2011-10-11

    申请号：US12398711

    申请日：2009-03-05

    申请人： Benjamin P. Abbott ,  Robert Aigner ,  Julien Gratier ,  Taeho Kook

    发明人： Benjamin P. Abbott ,  Robert Aigner ,  Julien Gratier ,  Taeho Kook

    IPC分类号： H03H9/64

    CPC分类号： H03H9/02574 ,  H03H9/02559 ,  H03H9/02866

    摘要： Improved coupling coefficients and desirable filter characteristics are exhibited in a SAW filter including an electrode pattern deposited on a piezoelectric substrate bonded directly to an anti-reflective layer, wherein the anti-reflective layer is bonded to a carrier through an adhesive layer such that a preselected thickness of the anti-reflective layer is sufficient for enhancing an acoustic match between the piezoelectric substrate and the adhesive layer.

    摘要翻译： 改进的耦合系数和期望的滤波器特性表现在包括沉积在直接结合到抗反射层上的压电基片上的电极图案的SAW滤波器中，其中抗反射层通过粘合剂层结合到载体，使得预选 抗反射层的厚度足以增强压电基片和粘合剂层之间的声匹配。

    PISTON MODE ACOUSTIC WAVE DEVICE AND METHOD PROVIDING A HIGH COUPLING FACTOR
    45.
    发明申请
    PISTON MODE ACOUSTIC WAVE DEVICE AND METHOD PROVIDING A HIGH COUPLING FACTOR 有权
    活塞式振动波装置及提供高耦合因子的方法

    公开(公告)号：US20110068655A1

    公开(公告)日：2011-03-24

    申请号：US12564305

    申请日：2009-09-22

    申请人： Marc Solal ,  Julien Gratier ,  Robert Aigner ,  Kevin Gamble

    发明人： Marc Solal ,  Julien Gratier ,  Robert Aigner ,  Kevin Gamble

    IPC分类号： H01L41/047

    CPC分类号： H03H9/02858 ,  H03H9/1452 ,  H03H9/1457

    摘要： An interdigital transducer includes an edge gap length between ends of electrodes and the opposing busbar increased sufficiently for reducing or even eliminating tunneling effects through the gap. As a result, a wave velocity of the acoustic wave within the longitudinally extending edge regions is less than the wave velocity within the transducer center region, and the wave velocity within the opposing gap regions is greater than a velocity in the transducer center region, thus an essentially flat propagation mode results within the aperture of the transducer. A SAW transducer or a SAW resonator on a high coupling substrate will thus guide the energy in the transducer region without a need for apodization. Higher equivalent coupling factors as well as lower losses are obtained.

    摘要翻译： 叉指换能器包括电极端部之间的边缘间隙长度，并且相对的母线充分增加以减少甚至消除通过间隙的隧道效应。 结果，纵向延伸的边缘区域内的声波的波速小于换能器中心区域内的波速，相对间隙区域内的波速大于换能器中心区域的速度，因此 在传感器的孔内产生基本平坦的传播模式。 因此，高耦合衬底上的SAW换能器或SAW谐振器将引导换能器区域中的能量而不需要变迹。 获得较高的等效耦合系数以及较低的损耗。

    BAW duplexer without phase shifter
    47.
    发明申请
    BAW duplexer without phase shifter 有权
    BAW双工器无移相器

    公开(公告)号：US20070080756A1

    公开(公告)日：2007-04-12

    申请号：US11246996

    申请日：2005-10-07

    申请人： Robert Aigner ,  Martin Handtmann

    发明人： Robert Aigner ,  Martin Handtmann

    IPC分类号： H03H9/70

    CPC分类号： H03H9/706

    摘要： A duplexer for connection with an antenna comprises an antenna port, a transmitting filter comprising bulk acoustic wave (BAW) resonators having a first antenna side impedance coupled with the antenna port, a receiving filter comprising BAW resonators having a second antenna side impedance coupled with the antenna port, and a shunt inductance coupled between the antenna port and ground. The shunt inductance and the first and second antenna side impedances of the transmitting filter and the receiving filter are selected in such a way that the shunt inductance turns the first and second input impedance in a negative direction in a Smith diagram.

    摘要翻译： 用于与天线连接的双工器包括天线端口，发射滤波器，包括具有与天线端口耦合的第一天线侧阻抗的体声波（BAW）谐振器，接收滤波器，包括具有与第二天线侧阻抗耦合的第二天线侧阻抗的BAW谐振器 天线端口和耦合在天线端口和地之间的并联电感。 选择发射滤波器和接收滤波器的并联电感和第一和第二天线侧阻抗，使得并联电感在史密斯图中将负的第一和第二输入阻抗转变成负方向。

    Bulk acoustic wave filter with a roughened substrate bottom surface and method of fabricating same
    50.
    发明授权
    Bulk acoustic wave filter with a roughened substrate bottom surface and method of fabricating same 有权
    具有粗糙化基板底面的体声波滤波器及其制造方法

    公开(公告)号：US06943647B2

    公开(公告)日：2005-09-13

    申请号：US10840320

    申请日：2004-05-06

    申请人： Robert Aigner ,  Pasi Tikka ,  Juha Sakari Ella

    发明人： Robert Aigner ,  Pasi Tikka ,  Juha Sakari Ella

    IPC分类号： H03H3/02 ,  H03H9/02 ,  H03H9/17 ,  H03H9/58 ,  H03H9/09 ,  H03H9/15 ,  H03H9/56

    CPC分类号： H03H9/175 ,  H03H3/02 ,  H03H9/02055 ,  H03H9/0211 ,  H03H9/585 ,  H03H9/589 ,  Y10T29/42

    摘要： A filter device comprises a substrate having a top surface and a bottom surface, and at least one acoustic wave situated on the top surface of the substrate, wherein the bottom surface of the substrate is roughened to reduce the reflection of an acoustic wave back to the acoustic wave filter. The effect achieved by the roughening of the bottom surface of the substrate that an acoustic wave which is generated by the acoustic wave filter and reaches the bottom surface of the substrate, is basically scattered so the acoustic wave that is actually reflected back to the acoustic wave device is reduced which, in turn, improves the performance characteristics of the acoustic wave filter.

    摘要翻译： 滤波器装置包括具有顶表面和底表面的衬底和位于衬底的顶表面上的至少一个声波，其中衬底的底表面被粗糙化以减小声波的反射回到 声波滤波器 通过基板的底面的粗糙化，由声波滤波器产生的声波到达基板的底面的声波基本上被散射，使得实际上被反射回声波的声波 装置被减少，这进而改善了声波滤波器的性能特性。