Title:
表面波でもって動作するコンポーネントのための電気音響的な変換器
Document Type and Number:
Japanese Patent JP2006514486
Kind Code:
A
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 lambda 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.
Inventors:
Marx Hauser
Ulrique Wrestler
Werner Ruile
Ulrique Wrestler
Werner Ruile
Application Number:
JP2004569022A
Publication Date:
April 27, 2006
Filing Date:
December 16, 2003
Export Citation:
Assignee:
EPCOS AG
International Classes:
H03H9/145; H03H9/02; H03H9/64
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel