Patent ID: 7205955

Claim:
An antenna comprising: a reflector formed of conductor and having a flat portion reflecting a prescribed electric wave; a first transmission line facing said flat portion with a prescribed distance therebetween; a plurality of radiators each formed of conductor and arranged on a same side as said first transmission line relative to said flat portion, said plurality of radiators each having first and second feed points arranged to have a distance from said flat portion larger than said prescribed distance; a plurality of second transmission lines associated with said plurality of radiators, respectively, and electrically connecting said first feed point and said first transmission line together; and a plurality of conductive plates arranged parallel to said plurality of second transmission lines, respectively, and electrically connecting said second feed point and said flat portion together, said plurality of conductive plates, as seen along said second transmission line, having a surface facing said second transmission line and larger in width than said second transmission line.