Abstract
In a rotated Y-cut plate of LiNbO/sub 3/, two orthogonal thickness-shear vibrations can be excited independently by electric fields perpendicular and parallel to the plate surface. Using the trapped-energy thickness-shear vibrations, piezoelectric vibratory gyroscopes of easy mount with no need of trimming are obtained. In this paper, a trapped-energy gyroscope using a rotated Y-cut of LiNbO/sub 3/ is proposed. It is shown experimentally that by choosing appropriate cuts the two orthogonal thickness-shear vibrations have close resonance frequencies, and the energy of the thickness-shear vibrations is trapped around the electrodes. The basic characteristics of a vibratory gyroscope using a 163/spl deg/ rotated Y-cut LiNbO/sub 3/ plate is presented.
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