Multi-slot common aperture dual polarized omni-directional antenna
AssigneeLhc2 Inc
InventorsRoyden M. Honda, Robert J. Conley, Jon Thorpe
Life of this patent
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Abstract
Horizontally polarized and dual polarized antennas are described herein. In some examples, a horizontally polarized and dual polarized antenna may be mounted or operated with the physical vertical axis of the antenna being substantially perpendicular to a plane defined by the surface of the earth, and emanate an electric field that is parallel to the surface of the earth. The antenna may have a multi-slot aperture that reduces a variation in the far field omni-directional pattern. The antenna may have various cross-sectional configurations, and may have a radome at least partially surrounding the antenna and a supporting structure.
Claims20
An antenna for wireless electromagnetic communications, the antenna comprising:
- a tube having an internal surface and an external surface, the tube forming an internal cavity having slots extending from the internal surface to the external surface along a vertical longitudinal axis of the antenna;
- a supporting structure disposed at least partly within the internal cavity of the tube, the supporting structure having at least a first face and a second face;
- and
- an electrically conductive transmission line and an electrically conductive ground disposed on the first face and the second face of the supporting structure, the transmission line and the ground being electrically coupled to the slots.
An antenna for wireless electromagnetic communications, the antenna comprising:
- a tube having an internal surface and an external surface, the tube forming an internal cavity having slots extending from the internal surface to the external surface along a vertical longitudinal axis of the antenna;
- and
- a nonconductive supporting structure disposed at least partly within the internal cavity of the tube, the nonconductive supporting structure physically connected to an inner conductor extension of an electrically conducting interior line of an external coaxial transmission line, the inner conductor extension having feeds electrically coupled to the slots.
An antenna for wireless electromagnetic communications, the antenna comprising:
- a tube having an internal surface and an external surface, the tube forming an internal cavity having slots extending from the internal surface to the external surface along a vertical longitudinal axis of the antenna;
- a nonconductive supporting structure disposed at least partly within the internal cavity of the tube, the nonconductive supporting structure comprising two or more slot feeds;
- and
- an electrically conductive transmission line disposed on the nonconductive supporting structure, the transmission line being electrically coupled to the slots.
Dependencies are inferred from the claim text.