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:
Mar. 18, 2025
Filed:
Mar. 30, 2020
Rf360 Singapore Pte. Ltd., Republic Plaza, SG;
Michael Smirnow, Munich, DE;
Matthias Knapp, Munich, DE;
RF360 Singapore Pte. Ltd., Singapore, SG;
Abstract
In at least one embodiment, the SAW device comprises a carrier substrate (), a piezoelectric thin-film () on the carrier substrate, an interdigital electrode structure () on the piezoelectric thin-film and a layer stack () of waveguide layers. The layer stack is arranged between the carrier substrate and the piezoelectric thin-film. The layer stack comprises a first waveguide layer () and second waveguide layer (), wherein a sound velocity in the first waveguide layer is at least 1.5 times as great as in the second waveguide layer. The device may comprise a temperature compensating layer () and a trap rich layer () between the layer stack and the carrier substrate.