Stress-compensated quartz resonators

Details Stress-compensated quartz resonators Stress-compensated quartz resonators

H - Electricity

04

R

73/67, 349/67.8

H04R 17/10 (2006.01) H03H 9/19 (2006.01) H04R 17/00 (2006.01)

Patent

CA 1175546

ABSTRACT A stress compensated thickness-shear resonator is of an orientation (yxwl) .PHI./.theta. selected from loci of stress compensated orientations provided for both the fast and slow thickness-shear modes of vibration. A stress compensated orientation is used in an oscillator for stable frequency-stress behavior. A stress compensated orientation having large-valued temperature coefficients of frequency is used in a temperature sensor for precision measurements. A stress and temperature compensated orientation is used in a pressure sensor such that the temperature compensated thickness-shear mode is used for pressure measurement while the stress compensated thickness-shear mode is used to compensate for effects of temperature.

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