-
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.
-
公开(公告)号：US20180094909A1
公开(公告)日：2018-04-05
申请号：US14800208
申请日：2015-07-15
Applicant: Raytheon Company
Inventor： David D. Crouch
CPC classification number: F41H13/0068 , F41H5/0457 , F42B10/46 , H01Q1/273 , H01Q1/425
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.
-
公开(公告)号：US12283738B2
公开(公告)日：2025-04-22
申请号：US17991460
申请日：2022-11-21
Applicant: Raytheon Company
Inventor： David D. Crouch , David R. Sar
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.
-
公开(公告)号：US20240219563A1
公开(公告)日：2024-07-04
申请号：US18093276
申请日：2023-01-04
Applicant: RAYTHEON COMPANY
Inventor： David D. Crouch
Abstract: Method and system for directing RF energy from an active retrodirective antenna array including moving elements onto a target includes: receiving a beacon from the target by each element, the scattered beacon including an RF pilot signal imposed thereon, extracting the RF pilot signal from the received scattered optical beacon, dynamically measuring a distance to an area of optical beacon illumination on the target, calculating a phase utilizing the measured distance to the area of the target and a frequency of the extracted RF pilot signal, phase conjugating the RF pilot signal based on the calculated phase, and transmitting the phase conjugated RF signal towards the target; by each element, where the phase conjugated RF signal transmitted by each element add coherently at the area of optical beacon illumination on the target to enhance power density on the target.
-
公开(公告)号：US20240170824A1
公开(公告)日：2024-05-23
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.
-
Patent Agency Ranking
公开(公告)号：US20210330842A1
公开(公告)日：2021-10-28
申请号：US17169260
申请日：2021-02-05
Applicant: Raytheon Company
Inventor： Alf L. Carroll, III , David R. Sar , David D. Crouch , John Carcone
Abstract: A system for decontaminating personal protection equipment includes a microwave oven and a decontamination apparatus configured to be placed in and heated by the microwave oven. The decontamination apparatus includes a containment vessel having an interior space configured to be sealed. The decontamination apparatus also includes one or more stands within the interior space, where the one or more stands are configured to receive and hold one or more pieces of personal protection equipment to be heated by the microwave oven and decontaminated within the interior space. The decontamination apparatus further includes a pressure-relief valve configured to be opened to release a pressure within the interior space.
-
公开(公告)号：US20210278183A1
公开(公告)日：2021-09-09
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
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.
-
公开(公告)号：US20210119330A1
公开(公告)日：2021-04-22
申请号：US16659985
申请日：2019-10-22
Applicant: Raytheon Company
Inventor： David D. Crouch , Larry C. Martin
Abstract: An armored radome includes an electrically-conductive ground plane that provides load bearing and/or ballistic protection to a shielded sensor, and a pair of radiator structures on opposing surfaces of the ground plane. The radiator structures each include an antenna, and the ground plane includes one or more coaxial feedthroughs that couple the antennas for reradiation of signals. One or both of the radiator structures may include a frequency-selective surface (FSS) according to a desired operating frequency range or to shape a frequency response of the radome. The disclosed radome is both mechanically strong, and electromagnetically transparent, or nearly so, across a wide range of frequencies and transmit/receive angles.
-
公开(公告)号：US20190120600A1
公开(公告)日：2019-04-25
申请号：US16100749
申请日：2018-08-10
Applicant: Raytheon Company
Inventor： Michael J. Holihan , Michael C. Prescott , David D. Crouch , David R. Sar , Thomas L. Obert
IPC: F41H11/02
Abstract: An apparatus includes a capsule configured to be launched or carried towards an unmanned aerial vehicle (UAV). The apparatus also includes a directed energy device within or carried by the capsule. The directed energy device includes a first inductor configured to generate an inductive magnetic field that is able to inductively couple into one or more electronics of the UAV in order to disable or destabilize the UAV. The capsule can be configured to be launched towards the UAV and can include a loiter mechanism (such as a rotor, umbrella, or parachute) configured to maintain a position of the capsule or to slow a descent of the capsule after launch. The capsule can also be configured to be carried towards the UAV by a different UAV, and the apparatus can further include a tether coupling the capsule to the different UAV.
-
公开(公告)号：US10236588B2
公开(公告)日：2019-03-19
申请号：US15371476
申请日：2016-12-07
Applicant: Raytheon Company
Inventor： David D. Crouch
IPC: H01Q1/48 , H01Q13/10 , H01Q9/04 , H01Q21/26 , H01Q1/40 , H01Q13/08 , H01Q21/06 , H01Q21/24 , H01Q25/00
Abstract: An antenna system is provided having a ground plane and a first antenna element disposed over the ground plane. The first antenna element includes first and second fins, each of the first and second fins having an input port and a shape selected such that the fin is responsive to electromagnetic signals provided thereto. The antenna system further includes a second antenna element disposed over the ground plane. The second antenna element includes third and fourth fins, each of the third and fourth fins having an input port and a shape selected such that the fin is responsive to electromagnetic signals provided thereto. The first and second antenna elements are orthogonally arranged with respect to each other such that a slot portion of each of the first and second antenna elements intersect. The antenna system further includes a first substrate disposed about the first and second antenna elements.
-
-
-
-
-
-
-
-
-
Search Results
55
records
(took 0.016 seconds)
