Title :
Wien bridge oscillator with reduced amplifier gain-bandwidth product dependence
Author_Institution :
Dept. of Electr. & Electron. Eng., Polytech. South West, Plymouth, UK
fDate :
2/1/1990 12:00:00 AM
Abstract :
It is shown that the performance of an RC-active oscillator proposed by Reddy (1976) is sensitive to loop-gain errors and that designs based on minimising excess phase shifts are less than optimum. A modified design which reduces the frequency sensitivity to uniform gain-bandwidth product variations to near zero is presented, together with analytical support and experimental details
Keywords :
bridge circuits; oscillators; RC-active oscillator; Wien bridge oscillator; frequency sensitivity reduction; gain-bandwidth product dependence; loop-gain errors; modified design;
Journal_Title :
Circuits, Devices and Systems, IEE Proceedings G
