公开(公告)号：US06911881B2

公开(公告)日：2005-06-28

申请号：US10460299

申请日：2003-06-13

申请人： Daisuke Tamazaki ,  Takeshi Nakao ,  Toshimaro Yoneda

发明人： Daisuke Tamazaki ,  Takeshi Nakao ,  Toshimaro Yoneda

IPC分类号： H03H9/25 ,  H03H9/00 ,  H03H9/02 ,  H03H9/145 ,  H03H9/64

CPC分类号： H03H9/0028 ,  H03H9/02889 ,  H03H9/02905 ,  H03H9/6459

摘要： A surface acoustic wave device has first and second surface acoustic wave filter elements which are arranged on a surface acoustic wave substrate so as to define a filter device having a two-stage configuration. A free surface portion is provided by forming a perforation in an inter-stage connecting portion connecting the first and second surface acoustic wave filter elements.

摘要翻译： 表面声波装置具有布置在表面声波基板上的第一和第二表面声波滤波器元件，以限定具有两级结构的滤波器装置。 通过在连接第一和第二表面声波滤波器元件的级间连接部分中形成穿孔来提供自由表面部分。