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. 17, 2017
Filed:
Mar. 31, 2014
Avago Technologies General Ip (Singapore) Pte. Ltd., Singapore, SG;
Dariusz Burak, Fort Collins, CO (US);
Stefan Bader, Fort Collins, CO (US);
Alexandre Shirakawa, San Jose, CA (US);
Kevin J. Grannen, Thornton, CO (US);
Avago Technologies General IP (Singapore) Pte. Ltd., Singapore, SG;
Abstract
An acoustic resonator structure comprises a piezoelectric layer having a first surface and a second surface, a first electrode disposed adjacent to the first surface, and a second electrode disposed adjacent to the second surface. The first electrode comprises a first conductive layer disposed adjacent to the piezoelectric layer and having a first acoustic impedance, and a second conductive layer disposed on a side of the first conductive layer opposite the piezoelectric layer and having a second acoustic impedance greater than the first acoustic impedance. The second electrode may be disposed between a substrate and the piezoelectric layer, and it may comprise a third conductive layer disposed adjacent to the piezoelectric layer and having a third acoustic impedance, and a fourth conductive layer disposed on a side of the third conductive layer opposite the piezoelectric layer and having a fourth acoustic impedance greater than the third acoustic impedance.