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US 5,872,546 AGranted
Broadband antenna using a semicircular radiator
AssigneeNTT Mobile Communications Network, Inc.
InventorsTaisuke Ihara, Koichi Tsunekawa, Makoto Kijima
Life of this patent
Estimating the term…
Abstract
In a broadband antenna using a semicircular conductor disc, a semicircular cutout is formed in the semicircular radiator concentrically therewith. Alternatively, a semicircular arcwise radiating conductor with a semicircular cutout defined concentrically therewith is bent into a cylindrical shape to form a radiator.
Claims13
An antenna comprising:
- a first radiator formed by a substantially semicircular conductor disc, said disc including a substantially semicircular cutout concentrically therewith forming a semicircular arc;
- a plane conductor ground plate disposed opposed to said semicircular arc of said first radiator at right angles thereto;
- and
- a feeder connected to the vertex of the semicircular arc of said first radiator and said plane conductor ground plate, for feeding power across said first radiator and said ground plate.
1 more element
An antenna comprising:
- a first radiator formed by a substantially semicircular arcwise conductor having a semicircular cutout defined concentrically therewith to form a semicircular arc;
- a second radiator formed by a substantially semicircular conductor disc and disposed with a vertex of said semicircular conductor disc opposed to a vertex of said semicircular arc of said first radiator;
- and
- a feeder connected to said vertexes of said first and second radiators, for feeding power across said first and second radiators.
1 more element
An antenna comprising:
- a radiator formed by a substantially semicircular conductor disc bent into a cylindrical shape;
- a plane conductor ground plate disposed opposite and apart from a vertex of a semicircular peripheral arc of said disc at substantially right angles to the generating line of said cylindrical shape;
- and
- a feeder connected to the vertex of said semicircular arc and to said plane conductor ground plate for feeding power across said radiator and said ground plate.
1 more element
An antenna comprising:
- a radiator formed by a first substantially semicircular conductor disc bent into a cylindrical shape;
- another radiator formed by a second semicircular conductor disc having a center line aligned with a center line of said first semicircular conductor disc, said second semicircular conductor disc having a vertex opposed to a vertex of a peripheral semicircular arc of said first conductor disc apart therefrom;
- and
- a feeder connected to the vertexes of the semicircular arcs of said first and second conductor discs, for feeding power across said radiator and said another radiator.
1 more element
Dependencies are inferred from the claim text.