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    PHOTONIC INTEGRATED CIRCUIT-BASED COHERENTLY PHASED ARRAY LASER TRANSMITTER
    1.
    发明申请
    PHOTONIC INTEGRATED CIRCUIT-BASED COHERENTLY PHASED ARRAY LASER TRANSMITTER 有权

    公开(公告)号：US20220244578A1

    公开(公告)日：2022-08-04

    申请号：US17162860

    申请日：2021-01-29

    Applicant: Raytheon Company ,  Raytheon Company

    Inventor： Stephen P. Palese ,  Avram Bar-Cohen

    IPC: G02F1/01 ,  H01S5/40 ,  H01S5/024 ,  G01J1/42 ,  H01S5/04

    Abstract: An apparatus includes a photonic integrated circuit, which includes at least one splitter configured to split at least one input beam into multiple input beamlets and multiple phase modulators configured to phase-shift at least some of the input beamlets. The apparatus also includes an array of optical amplifiers configured to amplify the phase-shifted input beamlets and generate amplified beamlets. The apparatus further incudes a beam combiner configured to combine the amplified beamlets and generate an output beam. In addition, the apparatus includes a controller configured to control the phase modulators in order to adjust phasing of the phase-shifted input beamlets.

    Refractory Material with Supercritical Fluid-Deposited Interface Coatings
    2.
    发明申请
    Refractory Material with Supercritical Fluid-Deposited Interface Coatings 有权

    公开(公告)号：US20250066263A1

    公开(公告)日：2025-02-27

    申请号：US18455568

    申请日：2023-08-24

    Applicant: Raytheon Company

    Inventor： James E. Foreman

    IPC: C04B41/45 ,  C04B35/76 ,  C04B41/00

    Abstract: A refractory material can include a refractory filament and an interface coating applied to the refractory filament. The interface coating can include a refractory metal or semi-metal oxide, metal or semi-metal nitride, metal or semi-metal carbide, metal or semi-metal oxynitride, metal or semi-metal carbonitride, and/or metal or semi metal oxycarbide formed by depositing an organometallic precursor onto the refractory filament by supercritical fluid deposition and heat treating the organometallic precursor in the presence of an atmospheric condition so that the organometallic precursor forms an interface coating that is an oxidized, pyrolyzed, or carbidized form of the organometallic precursor and is present at a surface and beneath the surface of the refractory filament.

    Passive bypass for mitigation of inlet buzz in supersonic or hypersonic air-breathing engines
    4.
    发明授权
    Passive bypass for mitigation of inlet buzz in supersonic or hypersonic air-breathing engines 有权

    公开(公告)号：US12221925B1

    公开(公告)日：2025-02-11

    申请号：US18635986

    申请日：2024-04-15

    Applicant: Raytheon Company

    Inventor： Timothy O'Brien

    IPC: F02C7/04 ,  B64D33/02 ,  F02C7/045 ,  F02C7/057 ,  F02C7/24 ,  F02K1/82 ,  F02K7/10 ,  F02K7/14 ,  F02K7/18

    Abstract: A passive bypass for an inlet to a supersonic or hypersonic air-breathing engine allows airflow in the inlet to exit through the cowling when the inlet supplies more airflow than the air-breathing engine demands. The air-breathing engine may be the only form of propulsion or a secondary form of propulsion to reach higher speeds. The passive bypass includes a plurality of lower channels in the cowling that are operatively coupled to the inlet diffuser at an inner surface of the cowling and swept forward towards the throat, a plenum in the cowling operatively coupled to the plurality of lower openings and a plurality of upper channels in the cowling that are operatively coupled to the plenum and swept back away from the throat to an outer surface of the cowling. A serpentine path through the plurality of lower openings, the plenum and the plurality of upper openings allows airflow in the inlet to exit through the cowling when the inlet supplies more airflow than the air-breathing engine demands.

    Adaptable and hierarchical point cloud compression
    5.
    发明授权
    Adaptable and hierarchical point cloud compression 有权

    公开(公告)号：US12217463B2

    公开(公告)日：2025-02-04

    申请号：US17854842

    申请日：2022-06-30

    Applicant: Raytheon Company

    Inventor： Allen R. Hainline

    IPC: G06T9/00 ,  G06T3/40 ,  G06T5/70

    Abstract: Systems and methods are provided for point cloud compression. An exemplary method includes: receiving point cloud data; quantizing the point cloud data to remove noise to produce quantized point cloud data; generating, using the quantized point cloud data, a plurality of multi-level tiles; performing reordering within the multi-level tiles to optimize a compression rate producing a plurality of reordered multi-level tiles; bit packing the reordered multi-level tiles minimizing bits required to store per tile header data producing a bit packed multi-level tile data; and performing additional compression on the bit-packed multi-level tile data using a first compression algorithm.

    INTEGRATED CIRCUIT OUTPUTS WITH SWITCHED SOURCE FOLLOWERS TO SUPPORT VARIABLE OUTPUT LEVELS WITHOUT DEDICATED SUPPLIES
    6.
    发明申请
    INTEGRATED CIRCUIT OUTPUTS WITH SWITCHED SOURCE FOLLOWERS TO SUPPORT VARIABLE OUTPUT LEVELS WITHOUT DEDICATED SUPPLIES 有权

    公开(公告)号：US20250030423A1

    公开(公告)日：2025-01-23

    申请号：US18354034

    申请日：2023-07-18

    Applicant: Raytheon Company

    Inventor： Micky R. Harris ,  Magathi J. Willis

    IPC: H03K19/0185

    Abstract: An apparatus includes an output circuit configured to level-shift an incoming signal and generate an output signal having a voltage range different than a voltage range of the incoming signal. The output circuit includes an output driver configured to receive the incoming signal and generate the output signal at a specified voltage level. The output circuit also includes a switched source follower coupled to the output driver. The switched source follower is configured to receive the incoming signal and set the specified voltage level. The switched source follower may include first and second transistors, and the output driver may include a third transistor. The first and third transistors may be configured to be driven by the incoming signal. The second transistor may be configured to be driven by a gate voltage, and the specified voltage level for the output driver may be based on the gate voltage.

    High flux detection and imaging using capacitor transimpedance amplifier (CTIA)-based unit cells in imaging devices
    8.
    发明授权
    High flux detection and imaging using capacitor transimpedance amplifier (CTIA)-based unit cells in imaging devices 有权

    公开(公告)号：US12206369B2

    公开(公告)日：2025-01-21

    申请号：US18165713

    申请日：2023-02-07

    Applicant: Raytheon Company

    Inventor： Bryan W. Kean

    IPC: H03F3/08 ,  H03F1/08 ,  H03F3/00

    Abstract: An apparatus includes a photodetector configured to generate an electrical current based on received illumination. The apparatus also includes a capacitor transimpedance amplifier (CTIA) unit cell configured to generate an integration voltage based on the electrical current. The CTIA unit cell includes (i) an amplifier configured to receive the electrical current and a first reference voltage, (ii) a feedback capacitor coupled in parallel across the amplifier, and (iii) a reset switch coupled in parallel across the feedback capacitor. The apparatus further includes a comparator configured to compare an input voltage of the amplifier and a second reference voltage, where generation of the integration voltage is modifiable based on the comparison.

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