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    Lightweight, thermally stable disk for a coaxial travelling wave tube (CoTWT)
    21.
    发明授权
    Lightweight, thermally stable disk for a coaxial travelling wave tube (CoTWT) 有权

    公开(公告)号：US12278079B1

    公开(公告)日：2025-04-15

    申请号：US17836626

    申请日：2022-06-09

    Applicant: Raytheon Company

    Inventor： David R. Sar

    IPC: H01J23/12 ,  H01J25/34

    Abstract: A lightweight, thermally stable disk for use in a slow wave structure (SWS) of CoTWT is configurated without sacrificing thermal management, structural integrity, or RF performance. Refractory metal is removed from regions of the disk where no RF interaction is expected and replaced with resistive ceramic material. The disk includes one or more central ribs positioned about the periphery of a central hub. A plurality of U-shaped receptacles may extend from the one or more central ribs. The disk is plated with a patterned metal to define laminar conductive tabs spaced around the periphery that are separated by solid resistive ceramic tabs and to electromagnetically connect all exposed refractory metal surfaces. The plating metal must be capable of being deposited and patterned in a thin layer of 10 to 100 microns, exhibit a Young's Modulus of

    N-WAY COAXIAL SIGNAL INJECTOR WITH AXIAL FEEDS
    22.
    发明公开
    N-WAY COAXIAL SIGNAL INJECTOR WITH AXIAL FEEDS 审中-公开

    公开(公告)号：US20240170826A1

    公开(公告)日：2024-05-23

    申请号：US17991460

    申请日：2022-11-21

    Applicant: Raytheon Company

    Inventor： David D. Crouch ,  David R. Sar

    IPC: H01P5/12 ,  H01P1/16 ,  H01P3/06

    CPC classification number: H01P5/12 ,  H01P1/16 ,  H01P3/06

    Abstract: An axially-fed RF power combiner combines a plurality of input signals to generate a single fundamental-mode transverse electromagnetic (TEM) output. The combiner comprises a vacuum coaxial transmission line having a plurality of coaxial vacuum feedthroughs configured to receive the input signals. The feedthroughs are arranged axially around the vacuum coaxial transmission line. An increasing gap is provided between the inner conductive surface and the outer conductive surface of the vacuum coaxial transmission line to gradually transition the input signals from each coaxial vacuum feedthrough to quasi-TEM mode signals within the vacuum envelope of the vacuum coaxial transmission line. In some conductive-ridge embodiments, the inner conductive surface of the vacuum coaxial transmission line may comprise a cylindrical conductive base and a plurality of radially-aligned conductive ridges azimuthally distributed within a vacuum envelope of the vacuum coaxial transmission line. In some ridge-less embodiments, the inner conductive surface includes a tapered region within the vacuum envelope to provide an increasing gap between the inner conductive surface and the outer conductive surface.

    WAVEGUIDE-TO-WAVEGUIDE POWER COMBINER/DIVIDER
    23.
    发明公开
    WAVEGUIDE-TO-WAVEGUIDE POWER COMBINER/DIVIDER 审中-公开

    公开(公告)号：US20230344106A1

    公开(公告)日：2023-10-26

    申请号：US17660217

    申请日：2022-04-22

    Applicant: Raytheon Company

    Inventor： David D. Crouch ,  David R. Sar ,  Eachan Russell Landreth

    IPC: H01P5/19

    CPC classification number: H01P5/19

    Abstract: A waveguide-to-waveguide power combiner/divider including a waveguide including a first opening at a first end of a first section of the waveguide in a first plane and n openings of n sections at n other ends of the waveguide, wherein n is a positive integer. At least one of the n sections is bent in at least one plane different from the plane of first section, and the first section and n sections each have at least two sides that are broader than at least two other sides; and n−1 walls within waveguide configured to divide a height of first section into n heights. Each of n sections has a height equal to one of the n heights, wherein the n−1 walls are located at a junction of the first section and the n sections and extend toward the first opening of the first section.

    TRAVELING WAVE TUBE
    24.
    发明公开
    TRAVELING WAVE TUBE 审中-公开

    公开(公告)号：US20230343542A1

    公开(公告)日：2023-10-26

    申请号：US17660376

    申请日：2022-04-22

    Applicant: Raytheon Company

    Inventor： David R. Sar ,  Adam M. Conway

    IPC: H01J23/24 ,  H01J23/06

    CPC classification number: H01J23/24 ,  H01J23/06

    Abstract: Described herein is a traveling wave tube (TWT), comprising an electron gun configured to generate an electron beam (E-beam); a signal injector configured to generate a radio frequency (RF) signal; a slow wave structure (SWS) having an aperture configured to combine the E-beam and the RF signal; an outer wall enclosing the SWS; and at least one electromagnetically-active material on one of (1) at least one projection on at least one of a periphery of the SWS and on a side of the outer wall facing the SWS and (2) the periphery of the SWS configured to receive at least one electromagnetic signal to control, on-the-fly, amplification of the RF signal by maximizing dampening of spurious modes while minimizing dampening of operating modes.

    Non-lethal naval vessel interdiction weapon
    26.
    发明授权
    Non-lethal naval vessel interdiction weapon 有权

    公开(公告)号：US11293731B2

    公开(公告)日：2022-04-05

    申请号：US16828200

    申请日：2020-03-24

    Applicant: RAYTHEON COMPANY

    Inventor： David D. Crouch ,  David R. Sar ,  Michael J. Holihan ,  Alf L. Carroll, III

    IPC: B63G13/00 ,  F42B19/00 ,  F42B30/14 ,  B63G8/00

    Abstract: A non-lethal naval vessel interdiction weapon is provided. The non-lethal naval vessel interdiction weapon includes a hydrodynamic hull, guidance and delivery systems housed in the hydrodynamic hull with the delivery system being controllable by the guidance system to drive a naval vessel impeding payload toward a target and a deployment system. The deployment system is configured to prepare the hydrodynamic hull for payload deployment and to deploy the naval vessel impeding payload toward the target following hull preparation.

    CONTAINMENT VESSELS FOR RAPID THERMO-CHEMICAL DECONTAMINATION OF FACEMASKS OR OTHER PERSONAL PROTECTION EQUIPMENT (PPE)
    27.
    发明申请
    CONTAINMENT VESSELS FOR RAPID THERMO-CHEMICAL DECONTAMINATION OF FACEMASKS OR OTHER PERSONAL PROTECTION EQUIPMENT (PPE) 有权

    公开(公告)号：US20210330841A1

    公开(公告)日：2021-10-28

    申请号：US16944617

    申请日：2020-07-31

    Applicant: Raytheon Company

    Inventor： David D. Crouch ,  Alf L. Carroll, III ,  John Carcone ,  David R. Sar ,  Travis B. Feenstra

    IPC: A61L2/20 ,  A61L2/26 ,  A61L2/07

    Abstract: An apparatus includes a containment vessel having an interior space configured to be sealed. The interior space is configured to receive at least one reservoir of liquid to be vaporized during a decontamination process. The apparatus also includes a base configured to be inserted into the interior space. The base is configured to receive one or more pieces of personal protection equipment to be heated and decontaminated within the interior space during the decontamination process. The base is configured to hold the one or more pieces of personal protection equipment above the at least one reservoir of liquid. The apparatus further includes a pressure-relief valve configured to be opened to release a pressure within the interior space. In some cases, the apparatus may include a filter configured to filter material passing through the pressure-relief valve.

    DIELECTRIC-ENCAPSULATED WIDEBAND METAL RADOME
    28.
    发明申请
    DIELECTRIC-ENCAPSULATED WIDEBAND METAL RADOME 审中-公开

    公开(公告)号：US20180366821A1

    公开(公告)日：2018-12-20

    申请号：US15625280

    申请日：2017-06-16

    Applicant: Raytheon Company

    Inventor： David D. Crouch ,  Travis B. Feenstra ,  David R. Sar

    IPC: H01Q1/42

    Abstract: A low-loss millimeter-wave radome is provided. The low-loss millimeter wave radome includes a perforated and plated metallic plate and a low-loss dielectric encapsulation material to encapsulate the perforated and plated metallic plate. The perforated and plated metallic plate includes multiple metallic sheets and electrically conductive plating. The multiple metallic sheets respectively define a periodic array of sub-wavelength holes and are laminated together such that the periodic array of sub-wavelength holes combines into a periodic array of perforations.

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