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:
Jun. 24, 2025
Filed:
Sep. 13, 2021
Rf360 Singapore Pte. Ltd., Republic Plaza, SG;
Marc Konstantin Dietrich, Munich, DE;
Ingo Bleyl, Munich, DE;
Matthias Knapp, Munich, DE;
Guenter Scheinbacher, Baldham, DE;
Benno Blaschke, Munich, DE;
RF360 Singapore Pte. Ltd., Republic Plaza, SG;
Abstract
An apparatus is disclosed for a surface-acoustic-wave filter with a compensation layer having multiple densities. In an example aspect, the apparatus includes at least one surface-acoustic-wave filter with a piezoelectric layer, a substrate layer, and a compensation layer positioned between the piezoelectric layer and the substrate layer. The compensation layer includes a first portion having a first density and a second portion having a second density. The second density is greater than the first density. The first portion is positioned closer to the piezoelectric layer as compared to the second portion. The second portion is positioned closer to the substrate layer as compared to the first portion.