DocumentCode :
3019829
Title :
Resonator self-temperature-sensing using a dual-harmonic-mode crystal oscillator
Author :
Schodowski, Stanley S.
Author_Institution :
US Army Electron. Technol. & Devices Lab., Fort Monmouth, NJ, USA
fYear :
1989
fDate :
31 May-2 Jun 1989
Firstpage :
2
Lastpage :
7
Abstract :
A thermometry method using resonator self-temperature-sensing is described. The method uses a harmonically related pair of c-modes of an SC-cut that is simultaneously excited in a dual-mode oscillator, and then combined to produce a thermometric frequency having a monotonic and nearly linear dependence on temperature. It avoids the activity dip problems of the b-mode and overcomes limitations of using external sensors that are subject to thermal lab and temperature gradients. This method provides a means of measuring resonator temperature with high accuracy, limited only by the stability difference between the c-mode frequencies. The concept for this dual c-mode thermometry method is presented and its implementation in a microcomputer-compensated crystal oscillator discussed
Keywords :
compensation; crystal resonators; temperature measurement; SC-cut; crystal oscillator; dual c-mode thermometry method; dual-harmonic-mode; microcomputer-compensated; resonator self-temperature-sensing; thermometric frequency; Frequency; Laboratories; Oscillators; Stability; Temperature dependence; Temperature distribution; Temperature sensors; Thermal sensors; Thermal stresses; Thermistors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Frequency Control, 1989., Proceedings of the 43rd Annual Symposium on
Conference_Location :
Denver, CO
Type :
conf
DOI :
10.1109/FREQ.1989.68851
Filename :
68851
Link To Document :
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