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公开(公告)号：US11870148B2
公开(公告)日：2024-01-09
申请号：US17524644
申请日：2021-11-11
Applicant: RAYTHEON COMPANY
Inventor： David D. Crouch , Hooman Kazemi , Alexander Borisovich Brailovsky
CPC classification number: H01Q19/065 , H01Q1/38
Abstract: A planar conductive millimeter-wave lens includes: a planar conductive plate with a first surface and a second surface, wherein the first surface is parallel to the second surface; a plurality of openings from the first surface through the planar conductive plate to the second surface, where an axis of each opening is perpendicular to the first surface and the second surface. A size of each opening is a function of a position of said each opening on the planar conductive plate such that an insertion phase collectively imposed by the openings on an incident wave causes the incident wave to pass through the first surface and the planar conductive plate, exit from the second surface and to focus at a predetermined distance from the second surface.
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公开(公告)号：US20230344104A1
公开(公告)日：2023-10-26
申请号：US17659865
申请日：2022-04-20
Applicant: Raytheon Company
Inventor： David D. Crouch , Eachan Russell Landreth , David R. Sar
Abstract: An apparatus for and a method of a coaxial-to-waveguide power combiner/divider. The apparatus includes a single-fin coaxial-to-waveguide power combiner/divider, including a waveguide having one open end, one closed end, and two sides that are broader than two other sides; two fins in a plane within the waveguide, wherein the plane is configured to be parallel to the broader sides of the waveguide; and at least one coaxial input joined to each of the two fins. Signals may be applied to the at least one coaxial input joined to each of the two fins are in phase with each other, and a number of the at least one coaxial input joined to each of the two fins may include one of a same number and a different number.
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公开(公告)号：US20230198158A1
公开(公告)日：2023-06-22
申请号：US18106817
申请日：2023-02-07
Applicant: RAYTHEON COMPANY
Inventor： David D. Crouch , Hooman Kazemi
IPC: H01Q15/10
CPC classification number: H01Q15/10
Abstract: A dielectric encapsulated metal lens includes a planar conductive plate with a first surface and a second surface, wherein the first surface is parallel to the second surface; a plurality of openings from the first surface through the planar conductive plate to the second surface, wherein a longitudinal axis of each opening is perpendicular to the first surface and the second surface, wherein a size of each opening is a function of a position of said each opening on the planar conductive plate; and a dielectric material encapsulating the planar conductive plate and filing the plurality of openings, where the dielectric material forms a top surface and a bottom surface for the metal lens to reduce reflected energy.
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公开(公告)号：US11612668B2
公开(公告)日：2023-03-28
申请号：US16986761
申请日：2020-08-06
Applicant: Raytheon Company
Inventor： David D. Crouch , David R. Sar , Alf L. Carroll, III , John Carcone
Abstract: A system includes a containment vessel configured to receive and hold one or more pieces of personal protection equipment to be heated and decontaminated during a decontamination process. The system also includes a solar collection device configured to heat the containment vessel based on received solar energy. The solar collection device includes a body having a first portion and a second portion. The first portion includes a solar aperture configured to receive the solar energy. The second portion is configured to receive the containment vessel within the body of the solar collection device. The solar collection device also includes louvered slats across the solar aperture. The louvered slats are configured to be rotated in order to control an amount of solar energy passing through the solar aperture into the body of the solar collection device.
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公开(公告)号：US11108429B1
公开(公告)日：2021-08-31
申请号：US16889302
申请日：2020-06-01
Applicant: Raytheon Company
Inventor： David D. Crouch , James J. Richardson , Walter M. Golonka
IPC: H04B1/7097 , H04L25/02 , G06F21/55 , H04L29/06 , H04B11/00
Abstract: Covert acoustic communications (CAC) through solid propagation channels that connect node pairs is achieved by encoding signals using spread spectrum coding techniques that position the encoded signal at a center frequency fc within a narrow frequency bandwidth BWNB in which the amplitude of the channel response H(f) between each node pair is relatively high. The channel response H(f), bandwidth BWNB and center frequency fc, and accordingly the signal data rate will adapt for each node pair and possibly each side of the node pair. A pre-distortion filter 1/H(f) pre-distorts the encoded signal over bandwidth BWNB to compensate for material and modal dispersion and multipath between the node pair. This technique avoids the problems associated with frequency dependent attenuation of the continuous solid path and allows for simultaneous transmission and reception of signals among the multiple node pairs.
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Patent Agency Ranking
公开(公告)号：US10153547B2
公开(公告)日：2018-12-11
申请号：US14800208
申请日：2015-07-15
Applicant: Raytheon Company
Inventor： David D. Crouch
Abstract: An armored radome is provided and includes a metallic plate formed to define an array of through-holes. Each through-hole has a respective longitudinal axis substantially aligned with electromagnetic radiation passing locally through the metallic plate.
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公开(公告)号：US20170125896A1
公开(公告)日：2017-05-04
申请号：US14928143
申请日：2015-10-30
Applicant: Raytheon Company
Inventor： David D. Crouch , David R. Sar
IPC: H01Q1/42
CPC classification number: H01Q1/422
Abstract: A monolithic, wideband, millimeter-wave radome is provided. The radome includes a solid layer formed of a single material and a lattice layer formed of the single material and disposed on an exterior surface of the solid layer. The lattice layer includes void regions formed from selective omission of the single material during lattice layer buildup.
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公开(公告)号：US09397400B2
公开(公告)日：2016-07-19
申请号：US14865131
申请日：2015-09-25
Applicant: Raytheon Company
Inventor： David D. Crouch , Keith G. Kato
CPC classification number: H01Q7/00 , H01Q1/40 , H01Q3/2605 , H01Q5/35 , H01Q9/42 , H01Q13/00 , H01Q21/0006 , H01Q21/24 , H01Q21/28
Abstract: A multiple input loop antenna comprising one or more half-loop antennas disposed above a ground plane wherein the plane of each half loop is perpendicular to the ground plane such that the multiple input loop antenna is a three-dimensional structure and electromagnetic waves are radiated from points within the volume occupied by the antenna rather than from a two-dimensional surface. For this reason, the multiple input loop antenna can radiate levels of peak power without inducing excessive air breakdown which are relatively high compared with peak power levels of conventional antennas having comparable transverse dimensions. Also described is an array antenna comprised of an array of multiple input loop antennas.
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公开(公告)号：US12272858B2
公开(公告)日：2025-04-08
申请号：US17991431
申请日：2022-11-21
Applicant: Raytheon Company
Inventor： David D. Crouch
Abstract: A radially-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 radially around the vacuum coaxial transmission line. 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. Each of the conductive ridges may be coupled to a center conductor of a corresponding one of the coaxial vacuum feedthroughs. The conductive ridges may have a taper to provide an increasing gap between the top of the conductive ridges and an outer conductive surface of the vacuum coaxial transmission line. The increasing gap may gradually transition the input signals from each coaxial vacuum feedthrough to quasi-TEM mode signals within the vacuum envelope allowing the quasi-TEM mode signals from each conductive ridge to spread azimuthally within the vacuum envelope and combine to generate a substantially pure TEM mode signal.
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公开(公告)号：US12266843B2
公开(公告)日：2025-04-01
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
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.
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