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    Surface acoustic wave device
    1.
    发明授权
    Surface acoustic wave device 失效
    表面声波装置

    公开(公告)号：US5670921A

    公开(公告)日：1997-09-23

    申请号：US470699

    申请日：1995-06-06

    申请人： Yoshiko Tera ,  Kouji Morishima ,  Atsushi Sakai

    发明人： Yoshiko Tera ,  Kouji Morishima ,  Atsushi Sakai

    IPC分类号： H03H9/02 ,  H03H9/145 ,  H03H9/25 ,  H03H9/64

    CPC分类号： H03H9/643 ,  H03H9/02771 ,  H03H9/14547 ,  H03H9/14567 ,  H03H9/1457 ,  H03H9/6426

    摘要： To obtain a surface acoustic wave device which can be produced with ease at a low cost and can be reduced in size without causing deterioration of characteristics, a surface acoustic wave device having input and output transducers arranged alternately on the surface of a substrate for propagating a surface acoustic wave includes metal patterns provided outside the transducers along the extension line of the propagation path of the surface acoustic wave and having at least one surface inclined at an angle .theta. (5.degree.

    摘要翻译： 为了获得可以以低成本容易地制造并且可以减小尺寸而不会导致特性劣化的表面声波装置，具有输入和输出换能器的表面声波装置交替布置在基板的表面上，用于传播 表面声波包括设置在换能器外部的金属图案，沿着声表面波的传播路径的延伸线并具有至少一个以角度θ倾斜的表面（5°<85°或-85°< 5°）相对于声表面波的传播方向。

    Saw filter including multistrip coupler with varied widths
    2.
    发明授权
    Saw filter including multistrip coupler with varied widths 失效
    锯片过滤器包括宽度不同的多段联轴器

    公开(公告)号：US5565825A

    公开(公告)日：1996-10-15

    申请号：US470700

    申请日：1995-06-06

    申请人： Yoshiko Tera ,  Kouji Morishima ,  Atsushi Sakai

    发明人： Yoshiko Tera ,  Kouji Morishima ,  Atsushi Sakai

    IPC分类号： H03H9/02 ,  H03H9/145 ,  H03H9/25 ,  H03H9/64

    CPC分类号： H03H9/643 ,  H03H9/02771 ,  H03H9/14547 ,  H03H9/14567 ,  H03H9/1457 ,  H03H9/6426

    摘要： A surface acoustic wave device for propagating a surface acoustic wave having input and output transducers and a multistrip coupler formed on the surface of a substrate. The input and output transducers each have two opposite electrodes having a plurality of electrode fingers extending toward their opposites and meshing with the electrode fingers of their opposites. The multistrip coupler has strip lines of a configuration wherein portions of at least some of the coupler strip lines are more widely spaced from adjacent patterns than other portions of the coupler strip lines. The width of these more widely spaced portions of at least one of the coupler strip lines which are more widely spaced from adjacent patterns is made larger than the width of the other portions of the at least one coupler strip line to compensate for the thinning effect of the lithography process. In one preferred embodiment, the portion of the at least one coupler strip line whose width is made larger is positioned so that it is not adjacent to the pattern of the input or output transducers.

    摘要翻译： 一种用于传播具有输入和输出换能器的声表面波的表面声波装置和形成在基板表面上的多带耦合器。 输入和输出换能器各自具有两个相对的电极，其具有朝向它们的对立面延伸并与其对立面的电极指相啮合的多个电极指。 所述多段耦合器具有这样的配置的带状线，其中至少一些耦合器带状线的部分相对于相邻的图案与耦合器带状线的其它部分间隔更宽。 与相邻图案间隔更宽的耦合器带状线中至少一个的这些更宽间隔的部分的宽度被制成大于至少一个耦合器带状线的其它部分的宽度，以补偿 光刻工艺。 在一个优选实施例中，使得其宽度变大的至少一个耦合器带状线的部分被定位成使其不与输入或输出换能器的图案相邻。

    Surface acoustic wave device
    3.
    发明授权
    Surface acoustic wave device 失效
    表面声波装置

    公开(公告)号：US5396199A

    公开(公告)日：1995-03-07

    申请号：US112474

    申请日：1993-08-27

    申请人： Yoshiko Tera ,  Kouji Morishima ,  Atsushi Sakai

    发明人： Yoshiko Tera ,  Kouji Morishima ,  Atsushi Sakai

    IPC分类号： H03H9/02 ,  H03H9/145 ,  H03H9/25 ,  H03H9/64

    CPC分类号： H03H9/643 ,  H03H9/02771 ,  H03H9/14547 ,  H03H9/14567 ,  H03H9/1457 ,  H03H9/6426

    摘要： To obtain a surface acoustic wave device which can be produced with ease at a low cost and can be reduced in size without causing deterioration of characteristics, a surface acoustic wave device having input and output transducers arranged alternately on the surface of a substrate for propagating a surface acoustic wave includes metal patterns provided outside the transducers along the extension line of the propagation path of the surface acoustic wave and having at least one surface inclined at an angle .theta. (5.degree.

    摘要翻译： 为了获得可以以低成本容易地制造并且可以减小尺寸而不会导致特性劣化的表面声波装置，具有输入和输出换能器的表面声波装置交替布置在基板的表面上，用于传播 表面声波包括设置在换能器外部的金属图案，沿着声表面波的传播路径的延伸线并具有至少一个以角度θ倾斜的表面（5°<85°或-85°< 5°）相对于声表面波的传播方向。