公开(公告)号：US10320085B1

公开(公告)日：2019-06-11

申请号：US14715500

申请日：2015-05-18

Applicant: LOCKHEED MARTIN CORPORATION

Inventor： Erik Lier ,  Matthew George Bray ,  Thomas Henry Hand ,  Bonnie Gean Martin

IPC: H01Q15/24 ,  H01Q19/10 ,  H01Q21/06

Abstract: A high efficiency short backfire antenna (SBFA) includes a cylindrical reflector and a feed structure. The conductive cylindrical reflector is configured to collect or to radiate electromagnetic waves. The cylindrical reflector has a reflector base and a reflector wall. The feed structure is electromagnetically coupled to the cylindrical reflector. The reflector wall includes a dielectric liner formed on an inside surface of the cylindrical reflector, and the dielectric liner is covered with a structured anisotropic impedance surface.

公开(公告)号：US11936112B1

公开(公告)日：2024-03-19

申请号：US17737487

申请日：2022-05-05

Applicant: Lockheed Martin Corporation

Inventor： Thomas Henry Hand ,  Joshua David Gustafson ,  Adam Blair Hess ,  Thomas Patrick Cencich ,  Braiden T. Olds ,  Joseph M. Torres ,  Erik Lier

IPC: H01Q21/00 ,  H01Q1/52 ,  H01Q3/22 ,  H01Q21/20 ,  H01Q21/30

CPC classification number: H01Q21/0056 ,  H01Q1/523 ,  H01Q3/22 ,  H01Q21/20 ,  H01Q21/30

Abstract: Provided herein are various enhancements for antenna systems and directed radio frequency energy structures. In one example, an apparatus includes an antenna array comprising a plurality of antenna elements formed by waveguide structures embedded within a substrate and positioned about a longitudinal axis of the substrate to form at least two concentric ring arrangements of antenna elements. Apertures of the waveguide structures are configured to emit or receive radio frequency (RF) energy generally along the longitudinal axis. Feed elements are coupled to each of the waveguide structures on an end opposite of the apertures, and configured to couple the RF energy for the antenna array.

公开(公告)号：US11450962B1

公开(公告)日：2022-09-20

申请号：US16386137

申请日：2019-04-16

Applicant: Lockheed Martin Corporation

Inventor： Joshua David Gustafson ,  W. Neill Kefauver ,  Thomas Henry Hand ,  Joseph M. Torres ,  Thomas Patrick Cencich ,  James Steven Harrison

IPC: H01Q5/30 ,  H01Q5/50 ,  H01Q5/357 ,  H01Q21/00 ,  H01Q21/06

Abstract: An antenna element includes a radiator element, a plurality of feed circuits and a multiplexing interface. The radiator element can transceive radio-frequency (RF) signals. The feed circuits, which include impedance and multiplexing features, are realized on multiple feed locations of the radiating element feed slot. The multiplexing interface is electrically coupled to the plurality of feed circuits and can multiplex a number of sub-band signals associated with the feed circuits. The multiplexing interface can provide a high isolation between the feed circuits.

公开(公告)号：US11881625B1

公开(公告)日：2024-01-23

申请号：US17495700

申请日：2021-10-06

Applicant: Lockheed Martin Corporation

Inventor： Thomas Patrick Cencich ,  Thomas Henry Hand ,  Joshua David Gustafson ,  W. Neill Kefauver

IPC: H01Q15/14 ,  H01Q19/17 ,  H01Q19/10

CPC classification number: H01Q15/14 ,  H01Q19/102 ,  H01Q19/17

Abstract: A reflector antenna includes a reflector having a curved reflecting surface that extends around a longitudinal center axis, wherein the curved reflecting surface is defined by rotating a concave curve around the longitudinal center axis and wherein one end of the concave curve defines an apex on the longitudinal center axis. The reflector antenna may further include a ground plane extension having a flat reflecting surface abutting an edge of the reflector and extending radially away from the longitudinal center axis. A phased array feed may be arranged spaced apart from and opposite to the reflecting surfaces of the reflector and the ground plane extension. A tapered collar may be arranged adjacent to the phased array feed, wherein the tapered collar tapers outward away from the phased array feed and towards the reflector, and wherein the tapered collar comprises an inner reflective surface facing the reflector.

公开(公告)号：US10651558B1

公开(公告)日：2020-05-12

申请号：US15294474

申请日：2016-10-14

Applicant: Lockheed Martin Corporation

Inventor： Thomas Henry Hand ,  R. Mark Clark ,  Erik Lier ,  Jeffrey Michael Loomis ,  Ryan Michael Paul

IPC: H01Q1/36 ,  H01Q9/16 ,  H04B7/185

Abstract: An omni antenna assembly includes two antennas, a dipole antenna and a monocone antenna, to provide full spherical coverage. The dipole cavity for the dipole antenna forms one solid part with the monocone antenna. The monocone antenna also includes a monocone and a cylindrical shell connecting the dipole cavity to the monocone. A coaxial transition extends from the cylindrical shell to a matching network. The antenna assembly may be fabricated using additive manufacturing technology.

公开(公告)号：US12166297B1

公开(公告)日：2024-12-10

申请号：US18152926

申请日：2023-01-11

Applicant: Lockheed Martin Corporation

Inventor： Elie Germain Tianang ,  Thomas Henry Hand ,  Carlos James Romero ,  Daniel Lloyd Reigh, II

IPC: H01Q9/28 ,  H01Q19/10

Abstract: Provided herein are various enhancements for radio frequency antennas and antenna arrangements. In one example, an apparatus comprises a reflector for radio frequency energy having a reflector surface comprising a paraboloid of revolution that establishes an inverted truncated conical shape with a concave nappe. The reflector surface is configured to interact with the radio frequency energy to direct at least a portion of the radio frequency energy towards a feed array mounted about a perimeter of the inverted truncated conical shape.

公开(公告)号：US11716064B1

公开(公告)日：2023-08-01

申请号：US17142098

申请日：2021-01-05

Applicant: LOCKHEED MARTIN CORPORATION

Inventor： Thomas Henry Hand ,  Joshua David Gustafson ,  Aaron Christopher Rothlisberger

IPC: H03G5/16 ,  H01P3/08 ,  H04B1/12 ,  H05K1/02

CPC classification number: H03G5/165 ,  H01P3/08 ,  H04B1/12 ,  H05K1/025

Abstract: Distributed gain equalization circuits for use with radio frequency (RF) devices are provided. The distributed gain equalization circuits include a substrate layer, multiple transverse electromagnetic (TEM) line circuits disposed on the substrate layer and multiple traces disposed on the substrate layer, each trace connected to one or more of the TEM line circuits. The traces and TEM line circuits are configured to provide resistances, inductances and capacitances to eliminate the need for lumped or packaged resistors, inductors and capacitors. The distributed gain equalization circuit operates at millimeter wave frequencies and provides a compensating gain slope to counteract a negative gain slope of the RF device. Methods of manufacturing distributed gain equalization circuits are also provided.

公开(公告)号：US10256531B1

公开(公告)日：2019-04-09

申请号：US15623329

申请日：2017-06-14

Applicant: LOCKHEED MARTIN CORPORATION

Inventor： Arun Kumar Bhattacharyya ,  Thomas Henry Hand ,  Adam Matthew Koontz

IPC: H01Q13/02 ,  H01Q1/28 ,  H01Q13/06 ,  H01Q21/22 ,  H01Q15/14

Abstract: A horn having folded axial corrugations is provided. The horn includes folded axial corrugations for a compact, low-profile, high-efficiency, and high power handling performance. The folded axial corrugations may include a plurality of grooves that are symmetric about a central axis, each groove including an axial portion that extends in a direction parallel to the central axis and a radial portion that extends from an end of the axial portion in a direction perpendicular to the central axis.

公开(公告)号：US12148999B1

公开(公告)日：2024-11-19

申请号：US17370177

申请日：2021-07-08

Applicant: Lockheed Martin Corporation

Inventor： Thomas Henry Hand ,  Joshua David Gustafson ,  Adam Blair Hess ,  Thomas Patrick Cencich ,  Braiden T. Olds

IPC: H01Q21/24 ,  H01Q13/08

Abstract: Provided herein are various enhancements for antenna systems and directed radio frequency energy structures. In one example, an apparatus includes a baseplate, an antenna array comprising a plurality of Vivaldi antenna elements arranged about an axis perpendicular to the baseplate, and feed elements coupled to each of the Vivaldi antenna elements through the baseplate.

公开(公告)号：US12069798B1

公开(公告)日：2024-08-20

申请号：US17726672

申请日：2022-04-22

Applicant: Lockheed Martin Corporation

Inventor： Thomas Henry Hand ,  Joshua David Gustafson ,  Joseph M. Torres ,  Aaron Christopher Rothlisberger ,  Roger Douglas Hasse ,  Adam Blair Hess ,  Madison P. Gast ,  Braiden T. Olds ,  Colton Brent Martin

IPC: H05K1/02 ,  H01P5/18 ,  H05K1/14

CPC classification number: H05K1/024 ,  H01P5/187 ,  H05K1/145 ,  H05K2201/09227

Abstract: Enhanced components and assemblies for connector-less radio frequency (RF) interconnect systems are provided. One example includes two circuit boards each with a broadside coupling feature comprising a tapered circuit board trace having a terminal portion. The circuit boards are positioned in close proximity to establish a desired gap, and a dielectric material is positioned within the gap between circuit boards. The broadside coupling features of the circuit boards are then configured to convey RF signals over the gap without electrical contact.