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:
Jun. 24, 2025
Filed:
Nov. 27, 2024
Q.ant Gmbh, Stuttgart, DE;
Ferdinand Schiller, Korntal Münchingen, DE;
Robert Roelver, Calw, DE;
Katharina Jag-Lauber, Winterbach, DE;
Q.ANT GMBH, Stuttgart, DE;
Abstract
A method for determining an external magnetic field with an NV magnetometer includes recording single resonance signals for determining resonance frequencies by using frequency-modulated microwave radiation emitted onto a sensor material in frequency bands based on a microwave frequency and a carrier frequency, recording a double resonance signal with a dispersive form and a linear range around the resonance frequencies, determining a slope of the linear range as a scalar factor from the double resonance signal, observing a detuning of the resonance frequencies via the double resonance signal with resonant emission of the microwave radiation due to external magnetic field changes, controlling the frequency bands based on the observed detuning so that the frequency bands remain in the range of the resonance frequencies present at the detuning even after the detuning has occurred, and determining the external magnetic field from a distance of the frequency bands and the detuning Δ.
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