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arXiv · 1203.2698

A Passive Phase Noise Cancellation Element

Eyal Kenig·M. C. Cross·Ron Lifshitz·R. B. Karabalin·L. G. Villanueva·M. H. Matheny·M. L. Roukes
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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.

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Eyal Kenig, M. C. Cross, Ron Lifshitz, R. B. Karabalin, L. G. Villanueva, M. H. Matheny, M. L. Roukes. 2012-03-13. A Passive Phase Noise Cancellation Element. https://doi.org/10.1103/physrevlett.108.264102

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