Patent ID: 7446453

Claim:
A surface acoustic wave device comprising: a piezoelectric substrate of a LiNbO 3 single crystal, the piezoelectric substrate having an orientation defined by Euler angles (λ, μ, θ), with angle λ ranging from −5° to +5°, angle μ ranging from −74° to −65°, and angle θ ranging from −5° to +5°; and an electrode pattern forming a resonator having a plurality of electrodes disposed on a surface of the piezoelectric substrate, wherein the electrodes are at least one of Aluminum as a primary component with a thickness of the electrodes ranging from about 12% Λ to 17.5% Λ and Copper as a primary component with a thickness of the electrodes ranging from about 6% Λ to 10% Λ, with Λ defined as an acoustic wavelength of a surface acoustic wave excited on the surface of the piezoelectric substrate.