Surface acoustic wave device with a thicker partial bus bar area and optimal bus bar to electrode tip gap
    1.
    发明授权
    Surface acoustic wave device with a thicker partial bus bar area and optimal bus bar to electrode tip gap 有权
    表面声波器件具有较厚的局部母线面积和最佳母线至电极尖端间隙

    公开(公告)号:US07170371B2

    公开(公告)日:2007-01-30

    申请号:US10823648

    申请日:2004-04-14

    IPC分类号: H03H9/64 H03H9/25

    摘要: Efficient transverse energy confinement, and provision of a surface acoustic wave filter having preferable characteristics of both insertion loss and shape factor are obtained. In the surface acoustic wave filter, electrode fingers of one comb electrode are laid in a state of being inserted to the electrode fingers of the other comb electrode, and a thick film thicker than each plurality of electrode fingers is produced in a partial area of the bus bar, and a tip gap is provided between the top of each plurality of electrode fingers and the end face of the opposed bus bar, with a distance therebetween set not greater than 0.2λ (where, λ is one period of the comb electrode).

    摘要翻译: 获得有效的横向能量限制,并且提供具有插入损耗和形状系数都优选的特性的表面声波滤波器。 在表面声波滤波器中,一个梳状电极的电极指状物被插入到另一梳状电极的电极指的状态,并且在该多个电极指的部分区域中产生厚于多个电极指的厚膜 汇流条,并且在每个多个电极指的顶部和相对的母线的端面之间设置有尖端间隙,其间的距离设置为不大于0.2λ(其中,λ是梳状电极的一个周期) 。

    Balanced output filter
    2.
    发明申请
    Balanced output filter 有权
    平衡输出滤波器

    公开(公告)号:US20050242903A1

    公开(公告)日:2005-11-03

    申请号:US11114128

    申请日:2005-04-26

    摘要: A balanced filter includes a package having an input ground metal pattern and an output ground metal pattern, and a filter chip having an inphase filter and an antiphase filter, which filters are mounted on the package, at least one of the inphase and antiphase filters having an input ground terminal connected to the input ground metal pattern and an output ground terminal connected to the output ground metal pattern, the input and output ground terminals of said at least one of the inphase and antiphase filters being separate from each other on the filter chip.

    摘要翻译: 平衡滤波器包括具有输入接地金属图案和输出接地金属图案的封装以及具有同相滤波器和反相滤波器的滤波器芯片,该滤波器安装在封装上,至少一个同相滤波器和反相滤波器具有 连接到输入接地金属图案的输入接地端子和连接到输出接地金属图案的输出接地端子,所述至少一个同相和反相滤波器的输入和输出接地端子在滤波器芯片上彼此分离 。

    Balanced output filter having specified package input and output ground metal patterns
    3.
    发明授权
    Balanced output filter having specified package input and output ground metal patterns 有权
    平衡输出滤波器具有指定的封装输入和输出接地金属图案

    公开(公告)号:US07233219B2

    公开(公告)日:2007-06-19

    申请号:US11114128

    申请日:2005-04-26

    IPC分类号: H03H9/64

    摘要: A balanced filter includes a package having an input ground metal pattern and an output ground metal pattern, and a filter chip having an inphase filter and an antiphase filter, which filters are mounted on the package, at least one of the inphase and antiphase filters having an input ground terminal connected to the input ground metal pattern and an output ground terminal connected to the output ground metal pattern, the input and output ground terminals of said at least one of the inphase and antiphase filters being separate from each other on the filter chip.

    摘要翻译: 平衡滤波器包括具有输入接地金属图案和输出接地金属图案的封装以及具有同相滤波器和反相滤波器的滤波器芯片,该滤波器安装在封装上,至少一个同相滤波器和反相滤波器具有 连接到输入接地金属图案的输入接地端子和连接到输出接地金属图案的输出接地端子,所述至少一个同相和反相滤波器的输入和输出接地端子在滤波器芯片上彼此分离 。

    Surface acoustic wave device and method of fabricating the same
    9.
    发明授权
    Surface acoustic wave device and method of fabricating the same 有权
    表面声波装置及其制造方法

    公开(公告)号:US07227429B2

    公开(公告)日:2007-06-05

    申请号:US10809926

    申请日:2004-03-26

    IPC分类号: H03H9/72 H03H9/64 H03H3/08

    摘要: A surface acoustic wave device includes a piezoelectric substrate having a first surface on which comb-like electrodes, first pads connected thereto, and a first film are provided. The first film is located so as to surround the comb-like electrodes. A base substrate has a second surface on which second pads joined to the first pads and a second film joined to the first film are provided. The first and second films joined by a surface activation process define a cavity in which the comb-like electrodes and the first and second pads are hermetically sealed.

    摘要翻译: 声表面波装置包括具有第一表面的压电基片,其上设有梳状电极,与其连接的第一焊盘和第一膜。 第一膜定位成围绕梳状电极。 基底基板具有第二表面,第二焊盘在其上连接到第一焊盘,并且提供连接到第一膜的第二膜。 通过表面激活工艺连接的第一和第二膜限定了其中梳状电极和第一和第二焊盘被气密地密封的空腔。