公开(公告)号：US12183975B2

公开(公告)日：2024-12-31

申请号：US17977359

申请日：2022-10-31

Applicant: AGENCY FOR DEFENSE DEVELOPMENT

Inventor： Byung Chul Park ,  Seung Ho Kim ,  Kun Sup Kwon ,  Jong Wan Heo ,  Sung Jae Lee ,  Ki Min Hwang

IPC: H01Q15/16 ,  H01Q13/02 ,  H01Q19/13

Abstract: An antenna apparatus includes: a parabolic reflector; a dielectric support pedestal; a sub-reflector connected to an upper part of the dielectric support pedestal; and a waveguide connected to a lower part of the dielectric support pedestal, wherein the parabolic reflector has a curved surface in which a ratio of a focal length to a diameter is greater than a preset value, and at least one corrugation configured to suppress a cross polarization is formed in a region of the dielectric support pedestal.

公开(公告)号：US11831074B1

公开(公告)日：2023-11-28

申请号：US17977331

申请日：2022-10-31

Applicant: AGENCY FOR DEFENSE DEVELOPMENT

Inventor： Seung Ho Kim ,  Byung Chul Park ,  Kun Sup Kwon ,  Jong Wan Heo ,  Sung Jae Lee ,  Ki Min Hwang

IPC: H01Q15/16 ,  H01Q13/02 ,  H01Q21/28 ,  H01Q1/42

CPC classification number: H01Q15/16 ,  H01Q1/421 ,  H01Q13/02 ,  H01Q21/28

Abstract: The embodiments generally relate to an antenna device that includes a cover having a specific shape to suppress a sidelobe of an elevation angle gain pattern which is caused by a radio-frequency (RF) device regardless of an avoidance area.