Patents by Inventor Ryan G. Quarfoth
Ryan G. Quarfoth has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240356216Abstract: An N-bit reflectarray unit cell is disclosed comprising a first part of a first dipole and a second part of the first dipole, and a first switch for connecting and disconnecting the first part of the first dipole to and from the second part of the first dipole. The unit cell further comprises a first part of a second dipole and a second part of the second dipole, and a second switch for connecting and disconnecting the first part of the second dipole to and from the second part of the second dipole.Type: ApplicationFiled: April 20, 2023Publication date: October 24, 2024Applicant: HRL Laboratories, LLCInventors: Timothy J. BROCKETT, Hanseung LEE, Ryan G. QUARFOTH, Hyok J. SONG
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Patent number: 12116662Abstract: A process enables growing thick stoichiometric crystalline and preferably IR-transparent optical PCMO material on Si and other substrates. Sputter deposition is carried out in oxygen-free inert gas (e.g., Ar) environment, which helps to prevent decomposition of the PCMO material over the substrate. In the disclosed process, there is no need to add a seed layer prior to PCMO deposition. Moreover, no post-deposition annealing is needed in a high-temperature and high-pressure oxygen furnace, but an anneal provides certain additional benefits in terms of improved transparency at IR wavelengths. Over a long deposition time for a thick PCMO film on the high temperature (?450° C.) substrates, the PCMO deposition is made repeated cycles of deposition of the PCMO material at the high temperature, each deposition cycle being followed by cooling the PCMO-deposited substrate to a substantially lower temperature (<50° C.).Type: GrantFiled: August 18, 2022Date of Patent: October 15, 2024Assignee: HRL LABORATORIES, LLCInventors: Kyung-Ah Son, Jeong-Sun Moon, Hwa Chang Seo, Richard M. Kremer, Ryan G. Quarfoth, Jack A. Crowell, Mariano J. Taboada, Joshua M. Doria, Terry B. Welch
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Patent number: 11988907Abstract: An electric field-controlled refractive index tunable device includes a phase change correlated transition metal oxide layer, and E-field responsive charge dopants. The E-field responsive charge dopants either accumulate in the phase change correlated transition metal oxide layer or are depleted from the phase change correlated transition metal oxide layer in response to an E-field applied to the phase change correlated transition metal oxide layer.Type: GrantFiled: March 25, 2021Date of Patent: May 21, 2024Assignee: HRL LABORATORIES, LLCInventors: Kyung-Ah Son, Jeong-Sun Moon, Hwa Chang Seo, Richard M. Kremer, Ryan G. Quarfoth
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Patent number: 11788183Abstract: A process enables growing thick stoichiometric crystalline and preferably IR-transparent optical PCMO material on Si and other substrates. Sputter deposition is carried out in oxygen-free inert gas (e.g., Ar) environment, which helps to prevent decomposition of the PCMO material over the substrate. In the disclosed process, there is no need to add a seed layer prior to PCMO deposition. Moreover, no post-deposition annealing is needed in a high-temperature and high-pressure oxygen furnace, but an anneal provides certain additional benefits in terms of improved transparency at IR wavelengths. Over a long deposition time for a thick PCMO film on the high temperature (?450° C.) substrates, the PCMO deposition is made repeated cycles of deposition of the PCMO material at the high temperature, each deposition cycle being followed by cooling the PCMO-deposited substrate to a substantially lower temperature (<50° C.).Type: GrantFiled: March 19, 2021Date of Patent: October 17, 2023Assignee: HRL LABORATORIES, LLCInventors: Kyung-Ah Son, Jeong-Sun Moon, Hwa Chang Seo, Richard M. Kremer, Ryan G. Quarfoth, Jack A. Crowell, Mariano J. Taboada, Joshua M. Doria, Terry B. Welch
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Patent number: 11710898Abstract: An electronically scanned antenna comprising a travelling wave guiding structure having a bottom conductor and a top conductor developing each along a first direction, the top conductor comprising a plurality of first conductive patches arranged periodically along said first direction and connected in series by tuning circuits; the electronically scanned antenna further comprising a plurality of amplifiers arranged for compensating resistive and radiation losses along the length of the travelling wave guiding structure.Type: GrantFiled: May 29, 2020Date of Patent: July 25, 2023Assignee: HRL LABORATORIES, LLCInventor: Ryan G. Quarfoth
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Publication number: 20220389561Abstract: A process enables growing thick stoichiometric crystalline and preferably IR-transparent optical PCMO material on Si and other substrates. Sputter deposition is carried out in oxygen-free inert gas (e.g., Ar) environment, which helps to prevent decomposition of the PCMO material over the substrate. In the disclosed process, there is no need to add a seed layer prior to PCMO deposition. Moreover, no post-deposition annealing is needed in a high-temperature and high-pressure oxygen furnace, but an anneal provides certain additional benefits in terms of improved transparency at IR wavelengths. Over a long deposition time for a thick PCMO film on the high temperature (?450° C.) substrates, the PCMO deposition is made repeated cycles of deposition of the PCMO material at the high temperature, each deposition cycle being followed by cooling the PCMO-deposited substrate to a substantially lower temperature (<50° C.).Type: ApplicationFiled: August 18, 2022Publication date: December 8, 2022Applicant: HRL Laboratories, LLCInventors: Kyung-Ah SON, Jeong-Sun MOON, Hwa Chang SEO, Richard M. KREMER, Ryan G. QUARFOTH, Jack A. CROWELL, Mariano J. TABOADA, Joshua M. DORIA, Terry B. WELCH
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Patent number: 11493824Abstract: A solid state electrically variable focal length lens includes a plurality of concentric rings of electro-optical material, wherein the electro-optical material comprises any material of a class of hydrogen-doped phase-change metal oxide and wherein each respective concentric ring further includes a transparent resistive sheet on a first face of the respective concentric ring, wherein the transparent resistive sheet extends along the first face, and a first voltage coupled between a first end and a second end of the transparent resistive sheet, wherein the first voltage may be varied to select an optical beam deflection angle.Type: GrantFiled: March 2, 2021Date of Patent: November 8, 2022Assignee: HRL LABORATORIES, LLCInventors: Richard Kremer, Kyung-Ah Son, Jeong-Sun Moon, Ryan G. Quarfoth
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Publication number: 20220308419Abstract: A solid state electrically variable focal length lens includes a plurality of concentric rings of electro-optical material, wherein the electro-optical material comprises any material of a class of hydrogen-doped phase-change metal oxide and wherein each respective concentric ring further includes a transparent resistive sheet on a first face of the respective concentric ring, wherein the transparent resistive sheet extends along the first face, and a first voltage coupled between a first end and a second end of the transparent resistive sheet, wherein the first voltage may be varied to select an optical beam deflection angle.Type: ApplicationFiled: March 2, 2021Publication date: September 29, 2022Applicant: HRL Laboratories, LLCInventors: Richard KREMER, Kyung-Ah SON, Jeong-Sun MOON, Ryan G. QUARFOTH
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Patent number: 11231635Abstract: A vertical directional coupler or switch comprising a lower and an upper waveguide, integrated with an optical phase change material disposed between the lower and upper waveguides to control a directional of optical coupling between the lower and upper waveguides.Type: GrantFiled: November 18, 2020Date of Patent: January 25, 2022Assignee: HRL Laboratories, LLCInventors: Jeong-Sun Moon, Ryan G. Quarfoth, Kangmu Lee
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Patent number: 11223140Abstract: A holographic antenna includes a transmission line and a plurality of interdigital capacitor (IDC) slots respectively formed along the transmission line. The holographic antenna also includes an active tuning device connected to each IDC slot from the plurality of IDC slots. Each active tuning device is configured to provide a holographic pattern on the plurality of IDC slots in response to the holographic antenna transmitting or receiving an electromagnetic signal. The holographic pattern is controllable for scanning an electromagnetic beam by the holographic antenna. The holographic antenna also includes a biasing source coupled to each active tuning device and configured to control its respective operation.Type: GrantFiled: April 21, 2020Date of Patent: January 11, 2022Assignee: The Boeing CompanyInventors: Hanseung Lee, Ryan G. Quarfoth, Amit Madanlal Patel, James H. Schaffner
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Publication number: 20210363629Abstract: A process enables growing thick stoichiometric crystalline and preferably IR-transparent optical PCMO material on Si and other substrates. Sputter deposition is carried out in oxygen-free inert gas (e.g., Ar) environment, which helps to prevent decomposition of the PCMO material over the substrate. In the disclosed process, there is no need to add a seed layer prior to PCMO deposition. Moreover, no post-deposition annealing is needed in a high-temperature and high-pressure oxygen furnace, but an anneal provides certain additional benefits in terms of improved transparency at IR wavelengths. Over a long deposition time for a thick PCMO film on the high temperature (?450° C.) substrates, the PCMO deposition is made repeated cycles of deposition of the PCMO material at the high temperature, each deposition cycle being followed by cooling the PCMO-deposited substrate to a substantially lower temperature (<50° C.).Type: ApplicationFiled: March 19, 2021Publication date: November 25, 2021Applicant: HRL Laboratories, LLCInventors: Kyung-Ah SON, Jeong-Sun MOON, Hwa Chang SEO, Richard M. KREMER, Ryan G. QUARFOTH, Jack A. CROWELL, Mariano J. TABOADA, Joshua M. DORIA, Terry B. WELCH
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Publication number: 20210364884Abstract: A solid state electrically variable focal length lens includes a plurality of concentric rings of electro-optical material, wherein the electro-optical material comprises any material of a class of hydrogen-doped phase-change metal oxide and wherein each respective concentric ring further includes a transparent resistive sheet on a first face of the respective concentric ring, wherein the transparent resistive sheet extends along the first face, and a first voltage coupled between a first end and a second end of the transparent resistive sheet, wherein the first voltage may be varied to select an optical beam deflection angle.Type: ApplicationFiled: March 2, 2021Publication date: November 25, 2021Applicant: HRL Laboratories, LLCInventors: Richard KREMER, Kyung-Ah SON, Jeong-Sun MOON, Ryan G. QUARFOTH
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Publication number: 20210328358Abstract: A holographic antenna includes a transmission line and a plurality of interdigital capacitor (IDC) slots respectively formed along the transmission line. The holographic antenna also includes an active tuning device connected to each IDC slot from the plurality of IDC slots. Each active tuning device is configured to provide a holographic pattern on the plurality of IDC slots in response to the holographic antenna transmitting or receiving an electromagnetic signal. The holographic pattern is controllable for scanning an electromagnetic beam by the holographic antenna. The holographic antenna also includes a biasing source coupled to each active tuning device and configured to control its respective operation.Type: ApplicationFiled: April 21, 2020Publication date: October 21, 2021Inventors: Hanseung Lee, Ryan G. Quarfoth, Amit Madanlal Patel, James H. Schaffner
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Patent number: 11041936Abstract: An autonomously reconfigurable surface for adaptive antenna nulling includes a lattice of electrically conductive elements (which may be embodied as crossed metallic dipoles) mounted on a thin and preferably conformal surface and aperiodically loaded with reactance tuning elements and/or RF (and typically high power) sensing circuits. Additional elements mounted on this surface include analog to digital convertors (ADCs), digital to analog convertors (DACs), and microcontroller(s). The analog outputs of the DACs are networked to reactance tuning elements via, for example, a network of thin copper traces. The analog inputs of the ADCs are networked to the RF sensing circuits via a network, for example, of thin copper traces. The digital outputs of ADCs and the digital inputs of DACs are networked to microcontroller(s) via a network, for example, of thin copper traces.Type: GrantFiled: October 4, 2018Date of Patent: June 22, 2021Assignee: HRL Laboratories, LLCInventors: Walter S. Wall, Amit M. Patel, Ryan G. Quarfoth
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Patent number: 11038269Abstract: A holographic antenna including a transmission line structure having a traveling wave mode along a length of the transmission line structure, and a plurality of reconfigurable radiating elements located along the length of the transmission line structure.Type: GrantFiled: July 23, 2019Date of Patent: June 15, 2021Assignee: HRL Laboratories, LLCInventors: Ryan G. Quarfoth, Carson R. White
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Patent number: 11024952Abstract: A system and method for a dual-polarized active artificial magnetic conductor (AAMC) is presented in this disclosure. An embodiment of the proposed system comprises an array of unit cells that reflects electromagnetic waves polarized parallel to a surface with a zero-degree phase shift. The array of unit cells has impedance elements connected to neighboring impedance elements with non-Foster circuits coupled in a crossover configuration, each impedance element being coupled to a ground with a conductive via.Type: GrantFiled: January 25, 2019Date of Patent: June 1, 2021Assignee: HRL Laboratories, LLCInventors: Ryan G. Quarfoth, Carson R. White
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Publication number: 20210149271Abstract: A vertical directional coupler or switch comprising a lower and an upper waveguide, integrated with an optical phase change material disposed between the lower and upper waveguides to control a directional of optical coupling between the lower and upper waveguides.Type: ApplicationFiled: November 18, 2020Publication date: May 20, 2021Applicant: HRL Laboratories, LLCInventors: Jeong-Sun Moon, Ryan G. Quarfoth, Kangmu Lee
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Patent number: 10955720Abstract: An optical apparatus may comprise: an electrically reconfigurable optical layer comprising at least one phase-change material, wherein an optical property of the phase-change material is reconfigurable by an electric field; an optically transparent top electrode and a bottom electrode, the top and bottom electrodes configured to apply the electric field to the electrically reconfigurable optical layer, wherein the electrically reconfigurable optical layer is disposed between the optically transparent top electrode and the bottom electrode; and a colossal-K dielectric layer disposed between the electrically reconfigurable optical layer and the bottom electrode. The phase-change material of the electrically reconfigurable optical layer may comprise phase-change nickelate or tungsten oxide. The phase-change material of the electrically reconfigurable optical layer may have a perovskite structure.Type: GrantFiled: March 7, 2019Date of Patent: March 23, 2021Assignee: HRL Laboratories, LLCInventors: Kyung-Ah Son, Jeong-Sun Moon, Ryan G. Quarfoth
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Patent number: 10886604Abstract: An interleaved array of electronically steerable antennas is capable of simultaneously operating and/or independently beam scanning at different frequencies from a single aperture. An antenna system may comprise a plurality of electronically steerable antennas configured to be operable at different frequencies, each of the antennas comprising a feed launching a surface wave and surface-wave waveguides connected to the feed. The surface-wave waveguides of the antennas operable at different frequencies may be interleaved with each other.Type: GrantFiled: December 19, 2018Date of Patent: January 5, 2021Assignee: HRL Laboratories, LLCInventor: Ryan G. Quarfoth
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Patent number: 10815771Abstract: A system configured to provide thermal regulation and vibration isolation to one or more electronic components. The system includes a sensor chassis defining an interior chamber, an electronics housing in the interior chamber of the sensor chassis, a thermoelectric cooler coupled between the sensor chassis and the electronics housing, a thermal strap coupled to the sensor chassis, and at least one isolator coupled to the sensor chassis. The system may also include an insulating material, such as Aerogel, in the interior chamber of the sensor chassis and extending around the electronics housing.Type: GrantFiled: June 25, 2018Date of Patent: October 27, 2020Assignee: HRL Laboratories, LLInventors: David W. Shahan, Ryan T. Freeman, Deborah J. Kirby, Ryan G. Quarfoth, Geoffrey P. McKnight