Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2005-08-30
2005-08-30
Dougherty, Thomas M. (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S324000
Reexamination Certificate
active
06936954
ABSTRACT:
A resonator having temperature and electronic compensation. The resonator has several layers on a substrate having opposite thermal coefficients of the sound velocity for temperature compensation. Also, the frequency of the resonator is adjusted in accordance with an external time reference. The resonator has a high quality factor and a very small size.
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Lakin, K.M., et al., “Temperature Compensated Bulk Acoustic Thin Film Resonators”, IEEE Ultrasonics Symposium paper 3H-2, 4 pages, Oct. 24, 2000.
Addison Karen
Dougherty Thomas M.
Honeywell Int'l Inc.
Honeywell International , Inc.
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