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US 12,665,313 B2Granted
Antenna apparatus
AssigneeAgency for Defense Development
InventorsByung Chul Park, Jong Wan Heo, Sung Jin Moon
Life of this patent
Estimating the term…
Abstract
Provided is an antenna apparatus including a waveguide that extends in a first direction and at least one ridge that protrudes from an inner peripheral surface of the waveguide and extends in the first direction, the at least one ridge including a first ridge part that protrudes from the inner peripheral surface of the waveguide toward a central axis of the waveguide and a second ridge part that protrudes from an end of the first ridge part toward the inner peripheral surface of the waveguide.
Claims9
An antenna apparatus comprising:
- a waveguide that extends in a first direction;
- and
- at least one ridge that protrudes from an inner peripheral surface of the waveguide and extends in the first direction,
- wherein the at least one ridge includes:
- a first ridge part that protrudes from the inner peripheral surface of the waveguide toward a central axis of the waveguide;
- and
- a second ridge part that protrudes from an end of the first ridge part toward the inner peripheral surface of the waveguide,
- wherein the second ridge part protrudes toward the inner peripheral surface of the waveguide in a second direction and a third direction that is symmetrical with the second direction about a straight line including the first ridge part on a plane intersecting the first direction,
- wherein the second ridge part includes a first portion having a first protruding length protruding in the second direction and the third direction along the first direction, and a second portion having a second protruding length protruding in the second direction and the third direction are a second length, and
- wherein the at least one ridge has a mushroom-shape structure that is configured for miniaturization and lower cut-off frequency.
7 more elements
Dependencies are inferred from the claim text.