Temperature compensation of SAW oscillators

Author

Cracknell, M.P. ; Harrison, A.M. ; Sharpe, D.J.

Author_Institution

STC Quartz Crystal Div., Harlow, UK

fYear

1988

Firstpage

284

Lastpage

287

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control Symposium, 1988., Proceedings of the 42nd Annual

Conference_Location

Baltimore, MD

Type

conf

DOI

10.1109/FREQ.1988.27616

Filename

27616