Apparatus for wideband directional antenna

A wideband directional antenna in a wireless communication service, comprising:

• a plurality of radiation means for radiating radio waves, wherein each radiation means comprises at least one radiation element, a radiation element being comprised of a planar conductor having two slots wherein the two slots in the planar conductor share a common side symmetrically coupling the two slots, wherein the common side has a portion cut out;
• a plurality of holding means for holding and fixing the plurality of radiation means in a predetermined position;
• feeding means for feeding signals to the plurality of radiation means;
• power dividing means for dividing and supplying signals to the plurality of feeding means;
• a plurality of impedance transforming means for matching impedances between the power dividing means and the plurality of feeding means;
• reflecting means for reflecting radio waves, wherein said radiation means is maintained at a predetermined distance from the reflecting means by the holding means;
• a plurality of ground distribution means for grounding the plurality of radiating means, wherein said ground distribution means are fixed to the reflecting means and maintain a predetermined distance between the radiation means and the reflecting means;
• a feeding cable for supplying signals to the power dividing means;
• and
• a plurality of choke reflecting means for suppressing a sideward radiation of said radiating means, wherein the plurality of choke reflecting means are vertically attached to said reflecting means in a longitudinal direction.