公开(公告)号：US07449812B2

公开(公告)日：2008-11-11

申请号：US10547852

申请日：2003-12-16

Applicant: Markus Hauser ,  Ulrike Roesler ,  Werner Ruile

Inventor： Markus Hauser ,  Ulrike Roesler ,  Werner Ruile

IPC: H01L41/08

CPC classification number: H03H9/14523 ,  H03H9/14517

Abstract: An electroacoustic transducer includes a first electrode having first fingers connected to a first bus bar, and a second electrode having second fingers connected to a second bus bar. The first and second fingers interdigitate and terminate at ends. The ends of the first and second fingers abut gaps between the first and second electrodes. An acoustic wave of wavelength λ is excitable at a resonant frequency. The acoustic wave has a longitudinal and a transverse excitation profile and a longitudinal and a transverse energy density profile, where the longitudinal excitation profile is approximately constant and different from the longitudinal energy density profile, and the transverse excitation profile substantially corresponds to the transverse energy density profile. Transverse positions of the gaps relative to the first and second bus bars vary to substantially correspond to the transverse excitation profile across the gaps.

Abstract translation: 电声换能器包括具有连接到第一汇流条的第一指状物的第一电极和具有连接到第二母线的第二指状物的第二电极。 第一和第二个手指在末端交叉并终止。 第一和第二手指的端部邻接第一和第二电极之间的间隙。 波长λ的声波在谐振频率处是可激发的。 声波具有纵向和横向激励分布以及纵向和横向能量密度分布，其中纵向激发分布近似恒定且不同于纵向能量密度分布，并且横向激发分布基本上对应于横向能量密度 个人资料 间隙相对于第一和第二母线的横向位置变化，基本上对应于穿过间隙的横向激励曲线。

公开(公告)号：US20070296306A1

公开(公告)日：2007-12-27

申请号：US11574904

申请日：2005-08-18

Applicant: Markus Hauser ,  Ulrich Knauer ,  Anton Leidl ,  Evelyn Riha ,  Gerd Riha ,  Ulrike Rosler ,  Werner Ruile ,  Clemens Ruppel ,  Gerd Scholl ,  Ulrich Wolff

Inventor： Markus Hauser ,  Ulrich Knauer ,  Anton Leidl ,  Evelyn Riha ,  Gerd Riha ,  Ulrike Rosler ,  Werner Ruile ,  Clemens Ruppel ,  Gerd Scholl ,  Ulrich Wolff

IPC: H03H3/10 ,  H01L41/083 ,  H03H9/02 ,  H03H9/08

CPC classification number: H03H9/08 ,  H03H3/10 ,  H03H9/02574 ,  H03H9/02834 ,  H03H9/02984

Abstract: Elements and methods for forming elements that operate with acoustic waves are disclosed. The element includes a piezoelectric electric substrate that has a first thermal coefficient of expansion, electrically conducting element structures on an upper side of the substrate, a compensation layer on an underside of the substrate, and an SiO2 layer over the element structures.

Abstract translation: 公开了用于形成用声波操作的元件的元件和方法。 该元件包括具有第一热膨胀系数的压电基片，在该基片的上侧上的导电元件结构，该基片的下侧上的补偿层和一层SiO 2层 元素结构。