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. 16, 2021
Filed:
Oct. 17, 2017
Applicant:
Qorvo Us, Inc., Greensboro, NC (US);
Inventors:
Shogo Inoue, Longwood, FL (US);
Marc Solal, Longwood, FL (US);
Assignee:
Qorvo US, Inc., Greensboro, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/25 (2006.01); H03H 9/64 (2006.01); H03H 9/02 (2006.01); H03H 9/145 (2006.01);
U.S. Cl.
CPC ...
H03H 9/6413 (2013.01); H03H 9/02551 (2013.01); H03H 9/02559 (2013.01); H03H 9/02566 (2013.01); H03H 9/02574 (2013.01); H03H 9/02669 (2013.01); H03H 9/14541 (2013.01); H03H 9/25 (2013.01);
Abstract
A guided acoustic wave device includes a substrate, a lithium tantalate layer on the substrate, and a transducer on the lithium tantalate film. The lithium tantalate has a crystalline orientation defined by (YXl)Θ°, where Θ is between 10° and 37°. The inventors discovered that limiting the crystalline orientation of the lithium tantalate in this manner provides significant increases in the electromechanical coupling coefficient of the acoustic wave device, thereby increasing bandwidth and improving performance.