The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 2024
Filed:
Feb. 02, 2023
Applicant:
Agency for Defense Development, Daejeon, KR;
Inventors:
Assignee:
AGENCY FOR DEFENSE DEVELOPMENT, Daejeon, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q 13/02 (2006.01); H01Q 13/18 (2006.01); H01P 3/123 (2006.01);
U.S. Cl.
CPC ...
H01Q 13/0275 (2013.01); H01P 3/123 (2013.01); H01Q 13/0225 (2013.01); H01Q 13/18 (2013.01);
Abstract
According to the present disclosure, an antenna apparatus which includes a hollow pillar shaped waveguide extending in a first direction and at least one ridge protruding from an inner circumferential surface of the waveguide and extending in the first direction, wherein the ridge has at least one recessed groove formed in the first direction; and an antenna apparatus which includes the waveguide, the ridge and the iris structure protruding from the inner circumferential surface of the waveguide along a plane intersecting the first direction, are provided.