Patent ID: 7569972
Filing Date: 2009-08-04
Classification: H03H

Abstract:
1. A surface acoustic wave device utilizing a Rayleigh wave, the device comprising: a LiNbO an electrode disposed on the LiNbO a first silicon oxide film disposed in a region other than a region in which the electrode is disposed, the first silicon oxide film having a film thickness substantially equal to a thickness of the electrode; and a second silicon oxide film arranged to cover the electrode and the first silicon oxide film; wherein the film thickness of the electrode is in the range of about 0.062λ to about 0.14λ, where λ represents the wavelength of a surface acoustic wave, and θ of the Euler angles of (0°±5°, θ±5°, 0°±10°) is in a range satisfying the following Formula: where T