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:
Dec. 09, 2003
Filed:
Oct. 25, 2001
Natalya F. Naumenko, Moscow, RU;
Benjamin P. Abbott, Orlando, FL (US);
Sawtek, Inc., Orlando, FL (US);
Abstract
A surface acoustic wave device includes a piezoelectric substrate of a single crystal LiNbO and an electrode pattern provided on a surface of the piezoelectric substrate which forms a resonator having an electrode thickness in a range of about 0.1% to about 8% of an acoustic wavelength of a surface acoustic wave excited on the surface of the substrate. The piezoelectric substrate has an orientation defined by Euler angles (&lgr;,&mgr;,&thgr;), with angle &lgr; in a range from −20° to +20°, angle &mgr; in a range from about −45° to about −10°, and angle &thgr; in a range from about (−1.16&lgr;−1.5)° to (−1.16&lgr;+1.5)°, wherein one of angle &lgr; and &thgr; is not equal to zero degrees. Such orientations simultaneously combined with an optimized propagation loss at resonant and anti-resonant frequencies provide for improved performance in RF applications.