# US 10,371,760 B2 · Standing-wave radio frequency exciter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,371,760 B2 - Document ID: US10371760B2 - Status: Granted - Kind: B2 - Application number: 15/468,582 - Filed: 2017-03-24 - Published: 2018-09-27 - Granted: 2019-08-06 - Earliest claimed: 2017-03-24 - Assignees: Lockheed Martin Corporation - Applicants: Lockheed Martin Corporation - Inventors: Andrew Raymond Mandeville; Gregory Scott Bruce; Joseph W. Hahn - Web page: https://patentgrep.com/patent/US10371760B2 ## CPC - G01R 33/032: using magneto-optic devices, e.g. Faraday {or Cotton-Mouton effect} - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) ## Abstract A system for magnetic detection includes a magneto-optical defect center material comprising a plurality of magneto-optical defect centers, an optical light source, an optical detector, and a radio frequency (RF) excitation source. The optical light source is configured to provide optical excitation to the magneto-optical defect center material. The optical detector is configured to receive an optical signal emitted by the magneto-optical defect center material. The RF excitation source is configured to provide RF excitation to the magneto-optical defect center material. The RF excitation source includes an RF feed connector, and a metallic material coated on the magneto-optical defect center material and electrically connected to the RF feed connecter. ## Claims ### Claim 1 A system for magnetic detection,comprising: a magneto-optical defect center material comprising a plurality of magneto-optical defect centers, a radio frequency (RF) exciter system configured to provide RF excitation to the magneto-optical defect center material; an optical light source configured to direct excitation light to the magneto-optical defect center material; an optical detector configured to receive an optical signal emitted by the magneto-optical defect center material based on the excitation light and the RF excitation; and wherein the RF exciter system comprises: a RF source; a controller configured to control the RF source, a RF input; a RF ground; a microstrip line electrically connected to the RF input and short circuited to the RF ground adjacent the magneto-optical defect center material, wherein controller is configured to control the RF source such that a standing wave RF field is created in the magneto-optical defect center material. ### Claim 2 (depends on 1) The system of claim 1, wherein the microstrip line comprises conductive traces comprising a first trace having a first width and a first length, and a second trace contacting the first trace, the second trace having a second width and a second length different from the first width and the first length. ### Claim 3 (depends on 2) The system of claim 2, wherein the second trace has an impedance of less than 10Ω. ### Claim 4 (depends on 2) The system of claim 2, wherein an impedance of the first trace matches a system impedance. ### Claim 5 (depends on 4) The system of claim 4, wherein the first trace has an impedance of about 50Ω. ### Claim 6 (depends on 1) The system of claim 1, wherein the microstrip line comprises a metallic material coated at least over a top surface, a bottom surface, and a side surface of the magneto-optical defect center material, and is short circuited to the RF ground adjacent the magneto-optical defect center material. ### Claim 7 (depends on 2) The system of claim 2, wherein the microstrip line further comprises a metallic material coated at least over a top surface, a bottom surface, and a side surface of the magneto-optical defect center material, and short circuited to the RF ground adjacent the magneto-optical defect center material. ### Claim 8 (depends on 1) The system of claim 1, wherein the microstrip line has a wavelength of a quarter wavelength of an RF carrier frequency. ### Claim 9 A radio frequency (RF) exciter system for providing RF excitation to a magneto-optical defect center material comprising a plurality of magneto-optical defect centers, the RF exciter system comprising: a RF input; a controller configured to control an RF source to apply a RF signal to the RF input; a RF ground; and a microstrip line electrically connected to the RF input and short circuited to the RF ground adjacent the magneto-optical defect center material; wherein the controller is configured to control the RF source to apply the RF signal to the RF input such that a standing wave RF field is created in the magneto-optical defect center material. ### Claim 10 (depends on 9) The RF excitation source of claim 9, wherein the microstrip line comprises conductive traces comprising a first trace having a first width and a first length, and a second trace contacting the first trace, the second trace having a second width and a second length different from the first width and the first length. ### Claim 11 (depends on 9) The RF excitation source of claim 9, wherein the microstrip line comprises a metallic material coated at least over a top surface, a bottom surface, and a side surface of the magneto-optical defect center material, and is short circuited to the RF ground adjacent the magneto-optical defect center material. ### Claim 12 (depends on 1) The system of claim 1, wherein the microstrip line has a wavelength of a quarter wavelength of an RF carrier frequency. ### Claim 13 A radio frequency (RF) exciter system, comprising: a RF exciter circuit for providing RF excitation to a magneto-optical defect center material comprising a plurality of magneto-optical defect centers, the RF exciter circuit comprising: a RF input; a RF ground; and a microstrip line electrically connected to the RF input and short circuited to the ground adjacent the magneto-optical defect center material; a controller configured to control a RF source to apply an RF signal to the RF input; wherein the controller is configured to control the RF source to apply the RF signal to the RF input such that a standing wave RF field is created in the magneto-optical defect center material; and a RF termination component configured to reduce back reflection of a RF signal from a short circuit. ### Claim 14 (depends on 13) The circuit of claim 13, wherein the RF termination component comprises one of a non-reciprocal isolator device, or a balanced amplifier configuration. ### Claim 15 (depends on 13) The circuit of claim 13, wherein the microstrip line comprises a metallic material coated at least over a top surface, a bottom surface, and a side surface of the magneto-optical defect center material, and is short circuited to the RF ground adjacent the magneto-optical defect center material. ### Claim 16 (depends on 13) The system of claim 13, wherein the microstrip line has a wavelength of a quarter wavelength of an RF carrier frequency.