Converter for surface waves with improved suppression of interfering excitation
    3.
    发明授权
    Converter for surface waves with improved suppression of interfering excitation 有权
    用于表面波的转换器,具有改善的干扰激励抑制

    公开(公告)号:US07170372B2

    公开(公告)日:2007-01-30

    申请号:US10484708

    申请日:2002-05-21

    IPC分类号: H02H9/64

    摘要: An electro-acoustic transducer for a component operating with surface waves, in particular for a surface wave filter, in which, to suppress interfering excitation ensuing in the gap region adjacent an end of a finger, a variation of the gaps is implemented with regard to at least one feature selected from transversal arrangement, size and shape. Due to the slight dimension change of the position of the gap in comparison to the finger length, the desired primary excitation in the transducer remains approximately unchanged, however the interfering excitation is displaced or divided, and made ineffectual.

    摘要翻译: 一种用于表面波操作的部件的电声换能器,特别是用于表面波滤波器,其中为了抑制随后在与手指末端相邻的间隙区域中的干扰激励,对于 从横向布置,尺寸和形状中选择的至少一个特征。 由于与手指长度相比,间隙的位置略微尺寸变化,换能器中期望的初级激发器保持大致不变,然而干扰激发被移位或分开,并且变得无效。

    Electroacoustic component and method for the production thereof
    7.
    发明授权
    Electroacoustic component and method for the production thereof 有权
    电声部件及其制造方法

    公开(公告)号:US07262676B2

    公开(公告)日:2007-08-28

    申请号:US11294077

    申请日:2005-12-05

    IPC分类号: H03H9/64

    摘要: An electroacoustic component including a layer system disposed between two substrates and electroacoustic structures for exciting a guided bulk acoustic wave, the electroacoustic structures being devoid of cavities. The layer system includes a piezo-electric layer, at least one metal layer, and a planarizing layer, which includes a planar interface provided with a substrate disposed directly thereabove. Such a component can be produced at a low cost by direct wafer bonding of two wafers. The electroacoustic component structures are electrically connected to the external contacts through perpendicular electrical connections.

    摘要翻译: 电声部件包括设置在两个基板之间的层系统和用于激发引导的体声波的电声结构,所述电声结构没有空腔。 层系统包括压电层,至少一个金属层和平坦化层,其包括设置有直接位于其上方的基板的平面界面。 可以通过两片晶片的直接晶片接合以低成本制造这种部件。 电声部件结构通过垂直的电连接与外部触点电连接。