公开(公告)号：US11652299B2

公开(公告)日：2023-05-16

申请号：US17184985

申请日：2021-02-25

Applicant: BAE Systems Information and Electronic Systems Integration Inc.

Inventor： Matilda Livadaru ,  Mark Fosberry ,  James F. Fung ,  Alexander D. Johnson ,  Randall R. Lapierre ,  Daniel G. Morin

IPC: H01Q21/06 ,  H01Q21/26 ,  H01Q9/28

CPC classification number: H01Q21/062 ,  H01Q9/285 ,  H01Q21/26

Abstract: A tightly coupled dipole array is an egg-crate configuration defined by a plurality of electrically connected antenna unit cells. At least one of the unit cells utilizes a short or conductive element that shorts the common mode resonance. Shorting the common mode resonance in an intentional manner removes instances of the common mode resonance. To achieve the shorting of the common mode resonance, a conductive element is connected with one of the dipole arms and connected to the outer conductor of the feed or a ground plane. This creates a grounding loop that pushes the resonance out of the band of interest.

公开(公告)号：US20220271438A1

公开(公告)日：2022-08-25

申请号：US17184985

申请日：2021-02-25

Applicant: BAE Systems Information and Electronic Systems Integration Inc.

Inventor： Matilda Livadaru ,  Mark Fosberry ,  James F. Fung ,  Alexander D. Johnson ,  Randall R. Lapierre ,  Daniel G. Morin

IPC: H01Q21/06 ,  H01Q21/00 ,  H01Q1/12

Abstract: A tightly coupled dipole array is an egg-crate configuration defined by a plurality of electrically connected antenna unit cells. At least one of the unit cells utilizes a short or conductive element that shorts the common mode resonance. Shorting the common mode resonance in an intentional manner removes instances of the common mode resonance. To achieve the shorting of the common mode resonance, a conductive element is connected with one of the dipole arms and connected to the outer conductor of the feed or a ground plane. This creates a grounding loop that pushes the resonance out of the band of interest.

公开(公告)号：US10854965B1

公开(公告)日：2020-12-01

申请号：US16277200

申请日：2019-02-15

Applicant: BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC.

Inventor： Matilda Livadaru ,  Andrew C. Maccabe

IPC: H01Q9/16 ,  H01Q1/52 ,  H01Q21/00 ,  H01Q1/38

Abstract: A ground shield is connected to a princted circuit board or antenna card in an antenna unit cell to cover a balun to prevent or inhibit the ability of a differential signal flowing towards or through the balun from coupling with a similar differential signal flowing through an adjacent antenna card in the antenna unit cell. This ground shield may be one of a pair of ground shields on the antenna card. Two ground shield can be positioned on opposing sides of the balun to enhance isolation thereof by shielding the differential signals flowing towards and through the balun from coupling with adjacent differential signals to thereby increase bandwidth performance of the antenna unit cell. The ground shields may be generally or substantially or totally planar so as to be conformal with a substrate or dielectric layer of the antenna card or printed circuit board.