Surface acoustic wave filter
    2.
    发明授权
    Surface acoustic wave filter 有权
    表面声波滤波器

    公开(公告)号:US07236067B2

    公开(公告)日:2007-06-26

    申请号:US11410059

    申请日:2006-04-25

    IPC分类号: H03H9/64

    摘要: A surface acoustic wave filter capable of obtaining a low insertion loss and wide bandwidth characteristic is provided. The surface acoustic wave filter includes a piezoelectric substrate; a pair of reflective electrodes formed on the piezoelectric substrate; and a plurality of comb electrodes formed between the pair of reflective electrodes on the piezoelectric substrate, wherein, in regard to the neighboring two comb electrodes among the plurality of comb electrodes, an electrode pitch of one comb electrode is set so that continuously varying phases of surface acoustic waves respectively generated by the two comb electrodes are obtained in a gap opposite to an outermost finger electrode of the other neighboring comb electrode.

    摘要翻译: 提供能够获得低插入损耗和宽带宽特性的表面声波滤波器。 声表面波滤波器包括压电基片; 形成在所述压电基板上的一对反射电极; 以及形成在所述压电基板上的所述一对反射电极之间的多个梳状电极,其中,对于所述多个梳状电极中的相邻的两个梳状电极,设置一个梳状电极的电极间距,使得连续变化的相位 在与另一个相邻的梳状电极的最外侧的指状电极相反的间隙中获得由两个梳状电极分别产生的表面声波。

    Surface acoustic wave filter
    3.
    发明申请
    Surface acoustic wave filter 有权
    表面声波滤波器

    公开(公告)号:US20060192636A1

    公开(公告)日:2006-08-31

    申请号:US11410059

    申请日:2006-04-25

    IPC分类号: H03H9/64

    摘要: A surface acoustic wave filter capable of obtaining a low insertion loss and wide bandwidth characteristic is provided. The surface acoustic wave filter includes a piezoelectric substrate; a pair of reflective electrodes formed on the piezoelectric substrate; and a plurality of comb electrodes formed between the pair of reflective electrodes on the piezoelectric substrate, wherein, in regard to the neighboring two comb electrodes among the plurality of comb electrodes, an electrode pitch of one comb electrode is set so that continuously varying phases of surface acoustic waves respectively generated by the two comb electrodes are obtained in a gap opposite to an outermost finger electrode of the other neighboring comb electrode.

    摘要翻译: 提供能够获得低插入损耗和宽带宽特性的表面声波滤波器。 声表面波滤波器包括压电基片; 形成在所述压电基板上的一对反射电极; 以及形成在所述压电基板上的所述一对反射电极之间的多个梳状电极,其中,对于所述多个梳状电极中的相邻的两个梳状电极,设置一个梳状电极的电极间距,使得连续变化的相位 在与另一个相邻的梳状电极的最外侧的指状电极相反的间隙中获得由两个梳状电极分别产生的表面声波。

    Electronic circuit device
    4.
    发明申请
    Electronic circuit device 审中-公开
    电子电路装置

    公开(公告)号:US20060189292A1

    公开(公告)日:2006-08-24

    申请号:US11349342

    申请日:2006-02-08

    IPC分类号: H04B1/10 H03H9/00 H04B1/16

    摘要: An electronic circuit device includes filters, and a 90-degree hybrid circuit connected to the filters. The 90-degree hybrid circuit may have first and second output terminals. The first terminal of the 90-degree hybrid circuit is connected to an input terminal of one of the filters, and the second terminal thereof is connected to an input terminal of another one of the filters. The 90-degree hybrid circuit may include at least one of phase lines and lumped constant circuit elements.

    摘要翻译: 电子电路装置包括滤波器和连接到滤波器的90度混合电路。 90度混合电路可以具有第一和第二输出端子。 90度混合电路的第一端子连接到一个滤波器的输入端子,其第二端子连接到另一个滤波器的输入端子。 90度混合电路可以包括相线和集总常数电路元件中的至少一个。

    Surface acoustic wave device and method of fabricating the same
    7.
    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。

    Surface acoustic wave filter with optimized width and pitch of interdigital electrodes and reflector electrodes
    8.
    发明授权
    Surface acoustic wave filter with optimized width and pitch of interdigital electrodes and reflector electrodes 失效
    表面声波滤波器,具有优化的叉指电极和反射器电极的宽度和间距

    公开(公告)号:US06498548B2

    公开(公告)日:2002-12-24

    申请号:US09863443

    申请日:2001-05-24

    IPC分类号: H03H964

    CPC分类号: H03H9/6433

    摘要: A surface acoustic wave filter is free from any loss arising from the impedance mismatching by finding out optimum values achieving a widened band and lowered loss for the electrode width of the interdigital transducer and reflector electrodes. The surface acoustic wave filter includes interdigital transducers and reflectors arranged on both sides of the transducer. The piezoelectric substrate has a ratio h/&lgr; of an electrode thickness h to a surface acoustic wave wavelength &lgr; lying within the range of 0.05≦h/&lgr;0.15 and has an electrode width ratio wr/pr of a reflector electrode width wr to an electrode pitch pr lying within the range of 0.5≦wr/pr≦0.6 and has an electrode width ratio wi/pi of an interdigital transducer interdigital electrode width wi to a pitch pi lying within the range of 0.6≦wi/pi≦0.9.

    摘要翻译: 表面声波滤波器通过找到实现扩宽带的最佳值和降低叉指式换能器和反射器电极的电极宽度的损耗而不受由阻抗失配引起的任何损失。 表面声波滤波器包括布置在换能器两侧的叉指换能器和反射器。 压电基板的电极厚度h与表面声波波长兰德的比率h / lambd在0.05 <= h / lambd0.15的范围内,并且反射器电极宽度wr的电极宽度比wr / pr 电极间距pr在0.5 <= wr / pr <= 0.6的范围内,并且具有叉指式换能器叉指电极宽度wi的电极宽度比wi / pi至间距p 1在0.6 <= wi / pi <= 0.9。

    Surface-acoustic-wave device for flip-chip mounting
    9.
    发明授权
    Surface-acoustic-wave device for flip-chip mounting 有权
    用于倒装芯片安装的表面声波装置

    公开(公告)号:US06417574B1

    公开(公告)日:2002-07-09

    申请号:US09635094

    申请日:2000-08-09

    IPC分类号: H01L2348

    摘要: A SAW device includes a piezoelectric substrate and a package body holding the piezoelectric substrate, wherein the package body includes a bottom part carrying the piezoelectric substrate in a face-down state and a side wall part laterally surrounding the piezoelectric substrate, the bottom part carrying a wiring pattern for electrical connection with an electrode pattern on the piezoelectric substrate, the wiring pattern including a first ground pattern and a second ground pattern in a mutually separated relationship, the first ground pattern and the second ground pattern being connected electrically with each other.

    摘要翻译: SAW器件包括压电基板和保持压电基板的封装体,其中封装体包括以面朝下状态承载压电基板的底部和横向围绕压电基板的侧壁部分,底部部分承载 用于与压电基板上的电极图案电连接的布线图案,布线图案包括彼此分离关系的第一接地图案​​和第二接地图案,第一接地图案​​和第二接地图案彼此电连接。