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:
May. 22, 2018
Filed:
Feb. 20, 2015
Hrl Laboratories, Llc, Malibu, CA (US);
Hung Nguyen, Los Angeles, CA (US);
Logan D. Sorenson, Agoura Hills, CA (US);
David T. Chang, Calabasas, CA (US);
Raviv Perahia, Calabasas, CA (US);
Deborah J. Kirby, Calabasas, CA (US);
Richard J. Joyce, Thousand Oaks, CA (US);
HRL Laboratories, LLC, Malibu, CA (US);
Abstract
A magnetometer has a resonating structure which is naturally resonant in at least first and second resonant modes, a resonant frequency of the second mode being at least an order of magnitude greater than a resonant frequency of the first mode, the resonating structure having two sense electrodes disposed on opposing major surfaces of the resonating structure and having a conductive path formed as a loop, the loop being disposed near or at edges of the resonating structure and the two sense electrodes being formed inwardly of the edges of the resonating structure and also inwardly of said loop. First and second oscillators are provided, the first oscillator being coupled to the loop for applying an oscillating current to the loop, the oscillating current having a frequency essentially equal to the resonant frequency of the first mode of the resonating structure, the second oscillator being coupled to said sense electrodes, the second oscillator oscillating with a fundamental frequency corresponding to the resonant frequency of the second mode of the resonating structure, the second oscillator also producing sidebands indicative of the magnetometer sensing an external magnetic field.