中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

7 records (took 0.013 seconds)

    Active antenna transmitter
    1.
    发明授权
    Active antenna transmitter 有权

    公开(公告)号：US11528042B1

    公开(公告)日：2022-12-13

    申请号：US17202194

    申请日：2021-03-15

    Applicant: HRL Laboratories, LLC

    Inventor： Ryan Quarfoth ,  Carson White

    IPC: H04B1/04 ,  H01Q1/24 ,  H03F1/02 ,  H03F3/24 ,  H01Q9/06 ,  H01Q13/18

    Abstract: A transmitting circuit. In some embodiment, the transmitting circuit includes a slot antenna and an amplifier. The slot antenna may include a slot in a conductive sheet, and it may have a first resonant frequency, the first resonant frequency being within 20% of a slot frequency which is between a first frequency corresponding, in a first volume, to a wavelength twice the length of the slot, and a second frequency corresponding, in a second volume, to a wavelength twice the length of the slot. The amplifier may be connected to the slot through a connection including a conductive path, between the amplifier and the slot, having a length less than 0.2 times the length of the slot. The magnitude of the output impedance of the amplifier may be less than 0.25 times the magnitude of the impedance of the slot antenna at a first resonant frequency.

    Surface antenna compensation
    2.
    发明授权
    Surface antenna compensation 有权

    公开(公告)号：US12199357B1

    公开(公告)日：2025-01-14

    申请号：US17887725

    申请日：2022-08-15

    Applicant: HRL LABORATORIES, LLC

    Inventor： Ryan Quarfoth ,  Christopher Roper ,  Jacob Hundley

    IPC: H01Q5/45 ,  H01Q1/28 ,  H01Q1/38 ,  H01Q19/02 ,  H04B7/0426 ,  H04B17/11 ,  H04B17/21

    Abstract: An apparatus and related method are disclosed for compensation of an antenna and/or an antenna array located at a surface that experiences environmental conditions. The apparatus can include: an embedded compensation and/or calibration structure configured to be interrogated by an electromagnetic wave, to dynamically compensate for surface erosion, thermal expansion, and/or dielectric constant changes of a surface scattering antenna; and a processor configured to: receive measurements of the compensation and/or calibration structure to determine beam pointing for dynamically varying surface conditions and perform sensing and/or seeking observation.

    SOLID-STATE TIP-TILT-PHASED ARRAY
    3.
    发明申请
    SOLID-STATE TIP-TILT-PHASED ARRAY 有权

    公开(公告)号：US20210364881A1

    公开(公告)日：2021-11-25

    申请号：US17206756

    申请日：2021-03-19

    Applicant: HRL Laboratories, LLC

    Inventor： Richard KREMER ,  Kyung-Ah Son ,  Jeong-Sun Moon ,  Ryan Quarfoth

    IPC: G02F1/29

    Abstract: A solid state optical beam steering device including a body of electro-optical material wherein the body of electro-optical material comprises any material of a class of hydrogen-doped phase-change metal oxide and wherein the body has a first face and a second face opposite the first face, a first transparent resistive sheet on the first face of the body of electro optic material, wherein the first transparent resistive sheet has a first side and a second side, and a transparent conductor on the second face of the body of electro optic material, wherein the transparent conductor is coupled to the second side of the first transparent resistive sheet.

    Active Receive Antenna
    4.
    发明申请
    Active Receive Antenna 有权

    公开(公告)号：US20250030178A1

    公开(公告)日：2025-01-23

    申请号：US18356364

    申请日：2023-07-21

    Applicant: HRL LABORATORIES, LLC

    Inventor： Carson White ,  Ryan Quarfoth ,  Amit Patel

    IPC: H01Q23/00 ,  H01Q13/18

    Abstract: An exemplary receive antenna having a conductive surface. The conductive surface includes an aperture configured to operate as a slot antenna, and one or more amplifiers or buffer amplifiers is electrically connected across the aperture. At least one feed is connected between the one or more amplifiers and the aperture. An input impedance ZB of each of the one or more amplifiers at the at least one feed location is lower than 0.5× an impedance of the aperture ZA at a first resonance frequency.

    Electrically-reconfigurable optical device structures with phase change materials
    5.
    发明授权
    Electrically-reconfigurable optical device structures with phase change materials 有权

    公开(公告)号：US12130507B1

    公开(公告)日：2024-10-29

    申请号：US18204158

    申请日：2023-05-31

    Applicant: HRL Laboratories, LLC

    Inventor： David Chow ,  Joseph Jensen ,  Jeong-Sun Moon ,  Kyung-Ah Son ,  Ryan Quarfoth

    IPC: G02F1/01 ,  G01J1/04 ,  G02F1/17

    CPC classification number: G02F1/0147 ,  G01J1/0407 ,  G02F1/17

    Abstract: A reconfigurable optical frequency selective structure having embedded therein:



    (a) an array of optical antennas for picking up propagating radiation in a visible or infrared frequency region and achieving preferential absorption of electromagnetic energy at a target wavelength k within the region,
    (b) an array of optical mesa structures of sub-wavelength scale including a phase-change material, the array of optical antennas being disposed atop the array of optical mesa structures respectively;
    (c) a metal ground plane disposed beneath the array of optical mesa structures, the array of optical mesa structures standing above the ground plane or an interfacial layer and being separated from one another to inhibit parasitic capacitance coupling therebetween; and
    (d) a plurality of heaters for selectively heating any one of the array of optical mesa structures to cause the phase change material in the selected optical mesa structure to change from an amorphous state, wherein the antenna atop the selected mesa structure is capacitively coupled to the metal ground plane, to a crystalline state wherein the antenna atop the selected mesa structure is electrically shunted to the ground plane via the selected mesa structure.

Patent Agency Ranking