The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 2011
Filed:
Dec. 18, 2006
Markus Mayer, Taufkirchen, DE;
Karl Christian Wagner, Unterhaching, DE;
Andreas Bergmann, Haiming, DE;
Markus Mayer, Taufkirchen, DE;
Karl Christian Wagner, Unterhaching, DE;
Andreas Bergmann, Haiming, DE;
EPCOS AG, Munich, DE;
Abstract
A transducer includes an acoustic track in which an acoustic wave can be propagated, the acoustic track having a transversal fundamental mode, the acoustic track being subdivided in a transversal direction into an excitation area and two peripheral areas. The transducer also includes a first outside area and a second outside area bordering the acoustic track such that the acoustic track is arranged in the transversal direction between the first and second outside area. The transducer also includes peripheral areas configured such that the longitudinal phase velocity vof the acoustic wave in the respective peripheral area is greater than the longitudinal phase velocity vof the wave in the excitation area.