Fractal monopole antenna
AssigneeElta Systems Ltd.
InventorsLaurent Habib, Benyamin Almog
Life of this patent
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Abstract
A monopole fractal antenna and a method of manufacturing thereof are described. The antenna includes a ground plane having a cavity recessed therein, a radiating arm backed by the cavity and coupled to a feeding line arranged at the cavity, and at least one pair of electrical shunts configured for connecting at least two points selected within the fractal portion of the radiating arm to the ground plane. At least a portion of the radiating arm has a fractal geometric shape. The radiating arm is extended from the cavity along an axis disposed in relation to the ground plane.
Claims23
A monopole antenna comprising:
- a ground plane having a cavity recessed therein;
- a radiating arm backed by the cavity and coupled to a feeding line arranged at the cavity, said radiating arm being extended from the cavity along an axis disposed in relation to said ground plane, at least a portion of the radiating arm having a fractal geometric shape;
- and
- at least one pair of electrical shunts configured for connecting at least two points selected within the fractal portion of the radiating arm to the ground plane.
A method of fabricating a monopole antenna comprising:
- forming a ground plane having a sheet of electrically conductive material;
- forming a cavity in said sheet of electrically conductive material;
- forming a radiating arm backed by the cavity and extended therefrom along an axis disposed in relation to said ground plane, at least a portion of the radiating arm having a fractal geometric shape;
- coupling said radiating arm to a feeding line arranged at the cavity;
- and
- forming at least one pair of electrical shunts configured for connecting at least two points selected within the fractal portion of the radiating arm to the ground plane.
A method for fabricating an antenna having reduced return losses within predetermined frequency bands, the method comprising:
- forming a ground plane having a sheet of electrically conductive material;
- forming a cavity in said sheet of electrically conductive material;
- forming a radiating arm backed by the cavity and extended therefrom along an axis disposed in relation to said ground plane, at least a portion of the radiating arm having a fractal geometric shape;
- coupling said radiating arm to a feeding line arranged at the cavity;
- and
- forming at least one pair of electrical shunts configured for connecting at least two points selected within the fractal portion of the radiating arm to the ground plane.
Dependencies are inferred from the claim text.