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New cut of a quartz resonator with a linear temperature/frequency characteristic

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5 Author(s)
Borissov, M. ; Bulgarian Academy of Sciences, Institute of Solid State Physics, Sofia, Bulgaria ; Spassov, L. ; Yosiffov, E. ; Balabanova, A.
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The letter describes a new cut of quartz resonator with a linear temperature/frequency characteristic used as a sensor for precise temperature measurements. The newly developed thermosensitive quartz resonator has some important advantages: obtaining comparatively easily and reproducibly a precise orientation of the piezoelement, good linearity of the temperature/frequency characteristic and a clear frequency spectrum in a wide temperature interval. The first-order temperature coefficient is 38 parts in 106/deg C and the frequency of operation on the third overtone is about 26.5 MHz at 10°C. That leads to an increase of approximately 1000Hz/deg C, with a sensitivity of 0.0001 deg C. These qualities of the thermosensitive quartz resonator make possible its use in devices for precise temperature measurements.

Published in:

Electronics Letters  (Volume:23 ,  Issue: 4 )