Optimizing performance of phase locked oscillator for high vibration environment

Abstract

This paper describes the design and implementation of phase locked oscillator (PLO) in radio front-end applying a combination of techniques to achieve increased tolerance for withstanding high vibration environment. Elements of a PLO that have been focused upon and optimized include the loop filter parameters such as loop bandwidth and phase margin and the reference oscillator section along with overall mechanical design and packaging. The loop filter of frequency synthesizer is optimized with a trade-off among various parameters and reference oscillator is realized using internal vibration isolators to achieve exceptionally stabilized spectral performance under high vibration condition.