公开(公告)号：US07038353B2

公开(公告)日：2006-05-02

申请号：US10220759

申请日：2001-12-13

申请人： Yoshio Maeda ,  Shouichi Komatsu ,  Yusuke Kinoshita

发明人： Yoshio Maeda ,  Shouichi Komatsu ,  Yusuke Kinoshita

IPC分类号： H03H9/25

CPC分类号： H03H9/0542 ,  H03H3/08 ,  H03H9/0038 ,  H03H9/0047 ,  H03H9/02669 ,  H03H2260/00

摘要： The invention provides a piezoelectric substrate in the form of a rectangular plate in which a Rayleigh wave is propagated, and an IDT and a reflector are provided by forming interdigital electrodes on the piezoelectric substrate. At least an end face on a shorter side of the piezoelectric substrate on a top side thereof is formed as a vertical smooth surface that is substantially in parallel with a conductor strip at an end of the reflector in the position of an imaginary node of a stress wave exiting the conductor strip, thereby providing a reflecting end face to reflect the stress wave.

摘要翻译： 本发明提供了一种矩形板形式的压电基片，其中瑞利波被传播，并且通过在压电基片上形成叉指电极来提供IDT和反射器。 至少在其顶侧的压电基板的较短侧上的端面形成为垂直平滑表面，其基本上与反射器的端部处的导体条平行，处于应力的虚拟节点的位置 离开导体条，从而提供反射端面以反映应力波。