公开(公告)号：US10665931B2

公开(公告)日：2020-05-26

申请号：US16049700

申请日：2018-07-30

Applicant: LOCKHEED MARTIN CORPORATION

Inventor： Erik Lier ,  Jason Stewart Wrigley ,  Arun Kumar Bhattacharyya ,  Timothy Patrick Wink ,  James F. Mulvey

IPC: H01Q13/00 ,  H01Q1/28 ,  H01Q13/02 ,  H01Q5/50 ,  H01Q1/38 ,  H01Q21/22 ,  H01Q1/24 ,  H01Q21/00 ,  H01P1/213 ,  H01Q5/55 ,  H01P1/17

Abstract: An antenna array includes multiple array modules. Each array module includes at least on antenna element including a horn antenna coupled to a polarizer, and a two-piece waveguide filter. The two-piece waveguide filter includes a folded-back waveguide coupled to the horn antenna at one end and to a circuit layer at the other end. The horn antenna includes a multi-mode horn antenna. The two-piece waveguide filter includes a first piece and a second piece that are separately molded. A footprint of the two-piece waveguide filter is within a footprint of an aperture of the horn antenna.

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：US12015202B2

公开(公告)日：2024-06-18

申请号：US18195901

申请日：2023-05-10

Applicant: LOCKHEED MARTIN CORPORATION

Inventor： Arun Kumar Bhattacharyya ,  Elie Germain Tianang ,  Alan Cherrette ,  Jonathan James Bennett

IPC: H01Q19/19 ,  H01Q3/14 ,  H01Q3/26 ,  H01Q5/35 ,  H01Q15/16 ,  H01Q15/18

CPC classification number: H01Q15/162 ,  H01Q3/14 ,  H01Q3/2658 ,  H01Q5/35 ,  H01Q15/18

Abstract: A multisegment array-fed reflector antenna includes a feed array consisting of a number of subarrays and a multisegment reflector to reflect multiple beams of the feed array into a number of elevation angles. A support structure couples the multisegment reflector to the feed array. The multisegment reflector includes two or more ring-focus parabolic segments, and each ring-focus parabolic segment is a parabolic surface extending along a circle around the support structure.

公开(公告)号：US11688950B2

公开(公告)日：2023-06-27

申请号：US16989795

申请日：2020-08-10

Applicant: LOCKHEED MARTIN CORPORATION

Inventor： Arun Kumar Bhattacharyya ,  Elie Germain Tianang ,  Alan Cherrette ,  Jonathan James Bennett

IPC: H01Q19/19 ,  H01Q15/16 ,  H01Q3/14 ,  H01Q5/35 ,  H01Q15/18 ,  H01Q3/26

CPC classification number: H01Q15/162 ,  H01Q3/14 ,  H01Q3/2658 ,  H01Q5/35 ,  H01Q15/18

Abstract: A multisegment array-fed reflector antenna includes a feed array consisting of a number of subarrays and a multisegment reflector to reflect multiple beams of the feed array into a number of elevation angles. A support structure couples the multisegment reflector to the feed array. The multisegment reflector includes two or more ring-focus parabolic segments, and each ring-focus parabolic segment is a parabolic surface extending along a circle around the support structure.

公开(公告)号：US11264729B2

公开(公告)日：2022-03-01

申请号：US16226445

申请日：2018-12-19

Applicant: LOCKHEED MARTIN CORPORATION

Inventor： Thomas Henry Hand ,  Arun Kumar Bhattacharyya ,  Joseph M. Torres ,  Scott Alan Lundgren ,  Konrad J. Gojara ,  Grayeme Everett Platt

IPC: H01Q19/17 ,  H01Q3/26 ,  H01Q21/20 ,  H01Q19/18

Abstract: Systems and methods are provided for wide scan phased array fed reflector systems using ring-focus optics to significantly improve the scan volume of such systems. The subject system includes a reflector having a focal plane and a parabolic curvature configured to receive electromagnetic radiation having a first gain and provide reflected electromagnetic radiation having a second gain greater than the first gain that collimates into a focal ring. The subject system includes a feed array having feed elements positioned about the focal ring, in which each feed element is configured to receive the reflected electromagnetic radiation from the reflector and collimate the reflected electromagnetic radiation into a scanned beam for scanning an annular region. In some aspects, the feed array is centered on the focal ring such that at least one feed element overlaps with the focal ring and remaining feed elements are non-overlapping with the focal ring.

公开(公告)号：US10819041B1

公开(公告)日：2020-10-27

申请号：US16054865

申请日：2018-08-03

Applicant: LOCKHEED MARTIN CORPORATION

Inventor： Andrew Jason Kee ,  Arun Kumar Bhattacharyya

IPC: H01Q21/06 ,  H01Q9/04

Abstract: An antenna system includes an antenna array including a number of antenna elements disposed on a substrate. Each antenna element includes a radiation layer, a ground plane layer, a feed layer and an additional ground plane layer. The ground plane layer includes a ground plane conductive layer that has a number of slots. The feed layer includes a feed structure to excite the slots. A dual polarization feature of the antenna array is realized via the slots, and the slots are separated by the ground plane conductive layer.