Title :
Towards an OCXO with infrared heater
Author :
Balaz, Igor ; Minarik, Marian
Author_Institution :
Dept. of Radioelectron., FEI STU, Bratislava, Slovakia
Abstract :
This paper deals with a method of modelling and design of a frequency stabilization system using a dual mode crystal oscillator with AT-cut resonator and IR heater. The main goal of the modeling has been to determine a relation among time constants and thermal parameters of a couple IR heater-quartz resonator and variable parameters of a control feedback circuit. For this purpose described method employs experimental access to obtain the thermal transfer characteristic of the pair heater-quartz and identification approach which allows to create a nonlinear differential equation of the second or higher order. Computer simulations have been provided on a base of this differential equation with assistance of program Mathcad
Keywords :
crystal oscillators; feedback oscillators; frequency control; frequency stability; nonlinear differential equations; quartz; AT-cut resonator; Mathcad; OCXO; control feedback circuit; dual mode crystal oscillator; frequency stabilization system; identification approach; infrared heater; nonlinear differential equation; thermal parameters; time constants; Computer simulation; Coupling circuits; Differential equations; Feedback circuits; Frequency; Heat transfer; Infrared heating; Oscillators; Temperature control; Thermal variables control;
Conference_Titel :
Frequency Control Symposium, 1996. 50th., Proceedings of the 1996 IEEE International.
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-3309-8
DOI :
10.1109/FREQ.1996.559950
