专利检索 ap:("Taiyo Yuden Co., Ltd.") AND inv:"KAWACHI, Osamu c/o FUJITSU MEDIA DEVICES LIMITED" 第 1 页

1.

发明授权
ELASTIC SURFACE WAVE APPARATUS 有权
标题翻译：弹性声表面波器件

公开(公告)号：EP1480336B1

公开(公告)日：2011-08-24

申请号：EP03703177.0

申请日：2003-02-05

申请人： Taiyo Yuden Co., Ltd.

发明人： KAWACHI, Osamu c/o FUJITSU MEDIA DEVICES LIMITED , ORITO, Satoshi c/o FUJITSU MEDIA DEVICES LIMITED , ABE, Takuya

IPC分类号： H03H9/145 , H03H9/25 , H03H9/64 , H01L41/09 , H01L41/18

CPC分类号： H03H9/6469 , H03H9/0042

摘要： An elastic surface wave apparatus includes a substrate (10), a pair of reflection electrodes (14, 18) formed on the substrate, and a plurality of drive electrodes (12) formed so as to be sandwiched by the pair of reflection electrodes. Cycle of each of the reflection electrodes changes according to a predetermined change pattern. Thus, it is possible to simultaneously improve suppression of spurious wave and squareness characteristics (precipitous shoulder portion of a passing zone).