公开(公告)号：US07170372B2

公开(公告)日：2007-01-30

申请号：US10484708

申请日：2002-05-21

申请人： Werner Ruile ,  Thomas Bauer ,  Michael Jakob ,  Ulrike Rösler

发明人： Werner Ruile ,  Thomas Bauer ,  Michael Jakob ,  Ulrike Rösler

IPC分类号： H02H9/64

CPC分类号： H03H9/02992 ,  H03H9/1452 ,  H03H9/14544 ,  H03H9/14547

摘要： An electro-acoustic transducer for a component operating with surface waves, in particular for a surface wave filter, in which, to suppress interfering excitation ensuing in the gap region adjacent an end of a finger, a variation of the gaps is implemented with regard to at least one feature selected from transversal arrangement, size and shape. Due to the slight dimension change of the position of the gap in comparison to the finger length, the desired primary excitation in the transducer remains approximately unchanged, however the interfering excitation is displaced or divided, and made ineffectual.

摘要翻译： 一种用于表面波操作的部件的电声换能器，特别是用于表面波滤波器，其中为了抑制随后在与手指末端相邻的间隙区域中的干扰激励，对于 从横向布置，尺寸和形状中选择的至少一个特征。 由于与手指长度相比，间隙的位置略微尺寸变化，换能器中期望的初级激发器保持大致不变，然而干扰激发被移位或分开，并且变得无效。