Title :
Temperature compensation of SAW oscillators
Author :
Cracknell, M.P. ; Harrison, A.M. ; Sharpe, D.J.
Author_Institution :
STC Quartz Crystal Div., Harlow, UK
Abstract :
A method for the compensation of surface acoustic wave (SAW) oscillators is described. This work is a development of a technique first used for compensation of AT-cut bulk crystal oscillators. The benefits that result for SAW oscillators are high compensation performance, low power consumption, low complexity and relatively low cost. Compensation is achieved by the use of a custom bipolar integrated circuit which generates a power series representation of the control voltage of a voltage-controlled SAW oscillators. A prototype oscillator has been built at 600 MHz and shows a compensated performance of ±4 p.p.m. over a 120°C operating temperature range. The potential to improve the performance to ±2 p.p.m. exists
Keywords :
bipolar integrated circuits; compensation; surface acoustic wave devices; variable-frequency oscillators; 120 degC; 600 MHz; control voltage; custom bipolar integrated circuit; prototype oscillator; voltage-controlled SAW oscillators; Acoustic waves; Bipolar integrated circuits; Costs; Energy consumption; Power generation; Prototypes; Surface acoustic waves; Temperature; Voltage control; Voltage-controlled oscillators;
Conference_Titel :
Frequency Control Symposium, 1988., Proceedings of the 42nd Annual
Conference_Location :
Baltimore, MD
DOI :
10.1109/FREQ.1988.27616
