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US 9,882,286 B1Granted
Cylindrical antenna using near zero index metamaterial
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorDavid A. Tonn
Life of this patent
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Abstract
A cylindrical antenna includes: a hollow cylinder having a height, an inner radius b, an axis, a cylindrical surface, and two ends; a ground plane on one end of the cylinder; an antenna wire extending from a center of the cylinder at one end on a ground plane along the axis and ending below the height of the cylinder; and a layer of near zero index (NZI) metamaterial surrounding and adjacent to the cylindrical surface.
Claims8
A cylindrical antenna comprising:
- a hollow cylinder having a height, an inner radius b, an axis, a cylindrical surface, and two ends;
- a ground plane joined to one end of the cylinder;
- an antenna wire extending from a center of the cylinder proceeding from the end of the cylinder that is joined to the ground plane through an aperture in the ground plane along the axis and ending below the height of the cylinder;
- and
- a layer of near zero index (NZI) metamaterial surrounding and adjacent to the cylindrical surface.
2 more elements
Dependencies are inferred from the claim text.