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:
Feb. 03, 2026
Filed:
Dec. 28, 2020
Soitec, Bernin, FR;
Soitec, Bernin, FR;
Abstract
A transducer structure with means for transverse mode suppression comprises a piezoelectric substrate, and a pair of inter-digitated comb electrodes on the piezoelectric substrate. The first comb electrode has a first bus bar and a plurality of electrode fingers alternating with shorter dummy fingers, both extending from the first bus bar. The second comb electrode has a second bus bar and a plurality of electrode fingers extending from the second bus bar. The dummy fingers of the first bus bar face the fingers of the second bus bar and are separated from the fingers by first gaps. A transverse mode suppression layer is disposed partially underneath the first gap. The phase velocity of a guided wave is smaller in the region of the transverse mode suppression layer compared to the phase velocity of the guided wave in the central region underneath the alternating fingers of the first and second electrodes.