The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 02, 2016
Filed:
Jan. 14, 2014
California Institute of Technology, Pasadena, CA (US);
Eyal Kenig, Los Angeles, CA (US);
Michael C. Cross, Arroyo Grande, CA (US);
Ron Lifshitz, Kfar Saba, IL;
Rassul Karabalin, Los Angeles, CA (US);
Luis Guillermo Villanueva Torrijo, Naerum, DK;
Matthew Matheny, Diamond Bar, CA (US);
Michael L. Roukes, Pasadena, CA (US);
CALIFORNIA INSTITUTE OF TECHNOLOGY, Pasadena, CA (US);
Abstract
A passive electro-mechanical device that reduces phase noise in oscillators, thereby improving their frequency precision. The noise reduction device can consist of a pair of coupled nonlinear resonators that are driven parametrically—by modulating their natural frequency in time, through the output signal 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 can exhibit oscillation at an inherent frequency. The novel possibility for noise elimination is realized by tuning the system to operating points for which this periodic signal is immune to frequency noise in the drive signal, providing a way to clean the phase noise of the driving oscillator.