公开(公告)号：US20160126928A1

公开(公告)日：2016-05-05

申请号：US14979287

申请日：2015-12-22

Applicant: EPCOS AG

Inventor： Werner Ruile ,  Markus Mayer ,  Ulrike Rösler ,  Markus Hauser ,  Ingo Bleyl ,  Karl-Christian Wagner ,  Wolfgang Sauer ,  Michael Jakob ,  Thomas Ebner ,  Edgar Schmidhammer ,  Stefan Berek ,  Christoph Eggs

IPC: H03H9/25

CPC classification number: H03H9/25 ,  H03H3/08 ,  H03H9/02535 ,  H03H9/02858 ,  H03H9/14532 ,  H03H9/1455 ,  H03H9/1457 ,  Y10T29/42

Abstract: An electroacoustic transducer has reduced loss due to acoustic waves emitted in the transverse direction. For this purpose, a transducer comprises a central excitation area, inner edge areas flanking the central excitation area, outer edge areas flanking the inner edge areas, and areas of the busbar flanking the outer edge areas. The longitudinal speed of the areas can be set so that the excitation profile of a piston mode is obtained.