Title :
OCXO design using composite-heating of the crystal resonator
Author_Institution :
Lab. of Res., Precise Quartz Resonators, Omsk City, Russia
fDate :
3/1/1994 12:00:00 AM
Abstract :
The design of a composite-heated quartz crystal resonator for OCXO applications is described. A mathematical model of the transient processes in the device is presented and is used to identify the physical and electrical parameters of the resonator providing optimized warm-up time, frequency stability, and power consumption. A prototype resonator exhibiting a warm-up time of 15 s, frequency versus temperature stability better than 3/spl times/10/sup /spl minus/8/, and heating current of about 5 mA is described.<>
Keywords :
crystal resonators; electric heating; equivalent circuits; frequency stability; modelling; quartz; radiofrequency oscillators; 15 s; 5 mA; OCXO design; composite-heating; crystal resonator; frequency stability; mathematical model; optimized warm-up time; oven-controlled crystal oscillator; power consumption; transient processes; Control systems; Energy consumption; Frequency; Heating; Oscillators; Piezoelectric films; Stability; Temperature control; Thermal resistance; Thermal sensors;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
