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ABSTRACT: In a rotated Y-cut plate of LiNbO<sub>3</sub>, 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
</sub> 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° rotated Y-cut
LiNbO<sub>3</sub> plate is presented
Frequency and Time Forum, 1999 and the IEEE International Frequency Control Symposium, 1999., Proceedings of the 1999 Joint Meeting of the European; 02/1999
