Active Frequency Stabilization Method for Sensitive Applications Operating in Variable Temperature Environments

• Main Authors: DONE, A., CAILEAN, A.-M., GRAUR, A.
• Format: Article
• Language: English
• Published: Stefan cel Mare University of Suceava 2018-02-01
• Series: Advances in Electrical and Computer Engineering
• Subjects: automotive electronics; automatic frequency control; barium compounds; thermal stability; voltage-controlled oscillators
• Online Access: http://dx.doi.org/10.4316/AECE.2018.01003

This article proposes a cost efficient and easy to implement frequency stabilization method orientated toward communication systems operating in an extensive temperature range, as the automotive or the aerospace applications. The proposed solution uses off-the-shelf components and it is optimized for very low power consumption. The novelty of this article is represented by the introduction of the barium strontium titanate capacitor for quartz crystal oscillator active frequency stabilization. After the design was completed, the performances were evaluated and compared to the ones of the uncompensated oscillator. Experimental results confirmed the suitability of the proposed design, achieving 35 times better frequency stability within variable temperature conditions, whereas the power consumption is maintained below 6mW.