Crystal resonator with low acceleration sensitivity and method o

Details Crystal resonator with low acceleration sensitivity and method o Crystal resonator with low acceleration sensitivity and method o

1987-10-02

1989-06-06

Tarcza, Thomas H.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310348, 310353, 29 2535, H01L 4104, H01L 4108, H01L 4122

Patent

active

048374750

ABSTRACT:
Crystal resonator with low acceleration sensitivity includes a piezoelectric quartz crystal, support structure for holding the crystal and a signal source for causing the crystal to resonate with an active region of vibration. The resonator is modified, if need be, to control (generally reduce) the gamma vector which is a measure of the acceleration senstivity. This may be done by adding mass, removing mass, or both adding and removing mass, all in order to move or change the shape of the active region of vibration and thereby reduce the gamma vector.

REFERENCES:
patent: 3651353 (1972-03-01), Hvgli et al.
patent: 4410822 (1983-10-01), Filler
patent: 4451755 (1984-05-01), Vig et al.
patent: 4453141 (1984-06-01), Rosati
Filler et al., "Further Studies on the Acceleration Sensitivity of Quartz Resonators", 37th Annual Frequency Control Symposium-1983.
Filler, "The Acceleration Sensitivity of Quartz Crystal Oscillators: A Review", 41st Annual Frequency Control Symposium-1987.
"Elastic Waves and Vibrations in Deformed Crystal Plates", Proceedings of the Twenty-Seventh Annual Frequency Control Symposium, U.S. Army Electronics Command, Fort Monmouth, N.J., 12-14, Jun. 1973.
"The Influence of Support-Configuration on the Acceleration Sensitivity of Quartz Resonator Plates", Proceedings of the Thirty-First Annual Frequency Control Symposium, U.S. Army Electronics Command, Fort Monmouth, N.J., Jun. 1-3, 1977.

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