A Passive Phase Noise Cancellation Element
Abstract
We introduce a new method for reducing phase noise in oscillators, thereby improving their frequency precision. The noise reduction device consists of a pair of coupled nonlinear resonating elements that are driven parametrically by the output of a conventional oscillator at a frequency close to the sum of the linear mode frequencies. Above the threshold for parametric response, the coupled resonators exhibit self-oscillation at an inherent frequency. We find operating points of the device for which this periodic signal is immune to frequency noise in the driving oscillator, providing a way to clean its phase noise. We present results for the effect of thermal noise to advance a broader understanding of the overall noise sensitivity and the fundamental operating limits.
Cite
@article{arxiv.1203.2698,
title = {A Passive Phase Noise Cancellation Element},
author = {Eyal Kenig and M. C. Cross and Ron Lifshitz and R. B. Karabalin and L. G. Villanueva and M. H. Matheny and M. L. Roukes},
journal= {arXiv preprint arXiv:1203.2698},
year = {2012}
}