WAVEGUIDE SLOT ARRAY ANTENNA AND PLANAR SLOT ARRAY ANTENNA

摘要

PURPOSE: A waveguide slot array antenna and a planar slot array antenna are provided to improve signal quality of a main beam by suppressing a surface wave radiated from the slot and a sidelobe by a reflection wall. CONSTITUTION: A waveguide slot array antenna(100) includes a waveguide(120) and a plurality of reflection walls(130). One end(140) of the waveguide is inclined to the preset angle. A plurality of slots(110) are formed on an outer surface of the upper wall of the waveguide with a constant interval. A plurality of concave grooves are formed in an inner surface of the lower wall of the waveguide. The plurality of reflection walls are formed in the outer surface of the upper wall of the waveguide. The plurality of reflection walls reduce a sidelobe and a surface wave radiated from the plurality of slots.