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. 14, 2023
Filed:
Nov. 29, 2016
Snaptrack, Inc., San Diego, CA (US);
Philipp Michael Jaeger, Munich, DE;
Werner Ruile, Munich, DE;
SnapTrack, Inc., San Diego, CA (US);
Abstract
The present invention relates to a filter circuit () comprising a first and a second bulk acoustic wave resonator (), the first resonator () having a first piezoelectric layer () structured such that the first resonator () has a lower resonant frequency than the second resonator (), wherein the first piezoelectric layer () is structured by recesses () passing through the first piezoelectric layer (), the first resonator () and the second resonator () as series resonators () connected in series with a signal path of the filter circuit () or wherein the first resonator () and the second resonator () as parallel resonators () are connected to the signal path of the filter circuit () in such a way that in each case one electrode of the resonators is connected to the signal path.