Suppression of vibration effects on piezoelectric crystal resona

Details Suppression of vibration effects on piezoelectric crystal resona Suppression of vibration effects on piezoelectric crystal resona

1982-01-28

1984-06-05

Heyman, John S.

Oscillators

Electromechanical resonator

Crystal

331116R, 331175, 310316, 310317, H03B 532, H03B 504

Patent

active

044531419

ABSTRACT:
An active method and apparatus for suppressing or cancelling the effects of vibration on quartz crystal controlled oscillators by generating an electrical signal which is a replica of the vibration acting on the crystal resonator, which signal is thereafter properly phased and applied directly to the crystal electrodes which thereby operates to substantially eliminate unwanted vibration-induced sidebands in the signal output of the oscillator.

REFERENCES:
patent: 3662269 (1972-05-01), Osborne et al.
patent: 3931533 (1976-01-01), Raso et al.
patent: 4197478 (1980-04-01), Silvus
patent: 4318063 (1982-03-01), Przyjemski
ERADCOM Technical Report, DELET-TR-80-10, "The Effect of Vibration on Qua Crystal Resonators", R. L. Filler.
Frequency and Time Systems, Inc. Application Note #61, 1978, "Acceleration Sensitivity . . . Crystal Oscillators", D. A. Emmons.
Proc. 34th Ann. Freq. Control Symp., 1980, "Fundamental Mode SC-CUT Resonators", R. L. Filler & J. R. Vig.
Proc. NAECON, 1977, "Limitations . . . Imposed by Crystal-Oscillator g-Sensitivity", J. M. Przyjemski & P. L. Konop.
Proc. NAECON, 1978, "A Compensation Technique for . . . Changes in Crystal Oscillators", J. M. Przyjemski.

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