CPC H01Q 13/18 (2013.01) [H01Q 3/34 (2013.01); H01Q 3/443 (2013.01); H01Q 13/12 (2013.01); H01Q 21/205 (2013.01); H03F 3/19 (2013.01); H03F 3/60 (2013.01); H01P 5/00 (2013.01); H03F 2200/222 (2013.01); H03F 2200/318 (2013.01); H03F 2200/387 (2013.01); H03F 2200/451 (2013.01)] | 22 Claims |
1. An antenna comprising:
a plurality of ports which are radially disposed;
a resonant cavity connected to the plurality of ports and configured to combine three or more signals, which have different phases from each other, applied via the plurality of ports; and
a plurality of slots for radiating an electromagnetic signal combined by the resonant cavity,
wherein the plurality of ports are disposed to protrude a side surface of the resonant cavity, and
wherein the plurality of slots are radially disposed on an upper surface of the resonant cavity.
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