Patent ID: 6861996

Claim:
A waveguide slot antenna, comprising: a lower layer conductive panel which further comprising a feeder line of a fixed length and width with an open face for gathering frequency signals towards the center in order to output them, a first waveguide which is connected to said feeder line in order to act as a transmission line of the frequency signals, and a radiation waveguide which is connected to one side of said first waveguide for receiving the frequency signals; a mid layer conductive panel which is piled on the upper section of said lower layer conductive panel and has radiation holes which penetrate from the upper part to lower part at fixed intervals, and further comprising a second wave guide and a second feeder line where said radiation holes and said lower layer conductive panel are connected at the lower face; and an upper layer conductive panel which are piled on the upper section of said mid layer conductive panel and has protrusions at fixed intervals, a plurality of slots located at one side of said protrusion and penetrate from the upper to lower section, and a plurality of guides in the shape a cavity at fixed intervals on the lower face.