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

1988-07-13

1990-06-19

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310348, 310353, 29 2535, H01L 4108

Patent

active

049356585

ABSTRACT:
In a process of producing crystal resonators in which the direction and magnitude of the gamma vector is substantially the same for each resonator, a method of altering the resonator during the process to change the resonator mass, shape, or electrode placement so as to reduce the gamma vector magnitude of each crystal. This alteration may be done by adding mass, removing mass, or both adding and removing mass, or by positioning the electrodes to selectively position the electric field in the crystal, all in order to move the location of the active region of vibration and thereby reduce the gamma vector.

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patent: 4837475 (1989-06-01), Eer Nisse et al.
Filler et al. "Further Studies on the Acceleration Sensitivity of Quartz Resonators", Proc. 37th Annual Symposium on Frequency COntrol, 1983, pp. 265-271.
Filler, Raymond L., "The Acceleration Sensitivity of Quartz Crystal Oscillators: A Review", Proc. 41st Annual Symposium on Frequency Control, 1987, pp. 398-408.
"Elastic Waves and Vibrations in Deformed Crystal Plates", Proceedings of the Twenty-Seventh Annual Frequency Control Symposium, U.S. Army Electronics Command, Fort Monmouth, New Jersey, 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., 1-3 Jun., 1977.

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