Method of adjusting frequency of NS-GT cut quartz resonator

Details Method of adjusting frequency of NS-GT cut quartz resonator Method of adjusting frequency of NS-GT cut quartz resonator

1994-03-03

1995-11-21

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310361, H01L 4108

Patent

active

054690102

ABSTRACT:
A method of adjusting a frequency-to-temperature coefficient of an NS-GT cut quartz resonator comprises providing a coupling resonator having a first order temperature coefficient .alpha..sub.+. A normalized frequency .delta. of the coupled vibrational modes is then calculated according to the relationship .alpha..sub.+ =m.delta.+n, where m and n are constants. The normalized frequency .delta. is then adjusted according to the relationship .alpha..sub.+ =m.delta.+n to set the first order temperature coefficient to substantially zero.

REFERENCES:
patent: 4050126 (1977-09-01), Ikeno et al.
patent: 4443728 (1984-04-01), Kudo
patent: 4447753 (1984-05-01), Ochiai
patent: 4484382 (1984-11-01), Kawashima
Proc. 36th Annual Frequency Control Symposium, Jun. 2-4, 1982, Philadelphia, Pa., pp. 90-96 O. Ochiai et al., "Method of Adjusting Resonant Frequency and Frequency-Temperature Coefficients of Miniaturized GT Cut Quartz Resonators".

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