| CPC H01Q 3/242 (2013.01) [H01Q 1/523 (2013.01); H01Q 7/00 (2013.01); H01Q 13/18 (2013.01); H01Q 21/20 (2013.01); H01Q 21/205 (2013.01); H01Q 25/00 (2013.01); H01Q 1/1271 (2013.01); H01Q 1/325 (2013.01)] | 13 Claims |

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1. An antenna unit, comprising:
a plurality of slot antennas, each of the plurality of slot antennas arranged on a common plane around a common axis perpendicular to the common plane, to radiate in a unique directional pattern, away from the common axis, wherein the plurality of slot antennas are arranged in a circular manner on the common plane;
a housing, comprising a bottom surface and a side structure, wherein the housing houses the plurality of slot antennas, and wherein the housing defines a generally hollow space adjacent to a top or bottom surface of each of the plurality of slot antennas; and
one or more switches, configured to selectively connect one or more of the plurality of slot antennas to, or disconnect one or more of the plurality of slot antennas from, a common radiofrequency feed.
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