Omni-directional antenna system and device for MIMO applications
AssigneeAirspan IP Holdco LLC
InventorsJohn Sanford, Brian Hinman, Justin Lee, Carlos Ramos, Syed Aon Mujtaba
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Abstract
Omni-directional orthogonally-polarized antenna system for MIMO applications are disclosed herein. An example antenna system can have two arrays of horizontally polarized radiating elements, and two arrays of vertically polarized radiating elements, each array having roughly 180-degree radiation pattern, disposed about a central axis in a common horizontal plane, arrays of common polarization separated by 180-degrees, such that MIMO processing of signals to the arrays of common polarization results in a radiation pattern that is substantially constant over 360-degrees in azimuth.
Claims19
An antenna system comprising two arrays of horizontally polarized radiating elements, and two arrays of vertically polarized radiating elements, each array having roughly 180-degree radiation pattern, disposed about a central axis in a common horizontal plane, arrays of common polarization separated by 180 degrees, thereby providing uniform coverage in both vertical and horizontal polarization over 360 degrees using beamforming and polarization diversity;
- a first metal extrusion and a second metal extrusion, each of the first metal extrusion and the second metal extrusion comprising a rear element, side elements extending orthogonally from the rear element, an angled element extending from each of the side elements, and a front element extending between the angled elements, the first metal extrusion and the second metal extrusion being placed in back-to-back relationship relative to one another at a reference plane and forming an octagonal structure when connected together;
- and
- a first of the two arrays of horizontally polarized radiating elements is disposed within the first metal extrusion and a second of the two arrays of horizontally polarized radiating elements is disposed within the second metal extrusion, wherein the two arrays are spaced apart from the reference plane and one another.
A device, comprising:
- a cylindrical radome housing;
- and
- an antenna system located within the cylindrical radome housing, the antenna system comprising a core assembly comprising two tubular metal extrusions, the two tubular metal extrusions enclosing slot arrays comprising a first pair of printed circuit boards each having slot elements that are horizontally polarized, the antenna system further comprising dipole arrays comprising a second pair of printed circuit boards each having dipole elements that are vertically polarized, the second pair of printed circuit boards being positioned between the two tubular metal extrusions, in order to provide uniform coverage in both vertical and horizontal polarization over 360 degrees, each of the two tubular metal extrusions comprising a rear element, side elements extending orthogonally from the rear element, an angled element extending from each of the side elements, and a front element extending between the angled elements, the two tubular metal extrusions being placed in back-to-back relationship relative to one another at a reference plane and forming an octagonal structure when connected together, the rear elements of the two tubular metal extrusions functioning as a ground plane and providing isolation between a front and a back of the core assembly allowing for creation of 180-degree beamwidths.
Dependencies are inferred from the claim text.