PLANAR ARRAY ANTENNA AND WIRELESS COMMUNICATION MODULE

A planar array antenna includes a plurality of unit cells which are one-dimensionally or two-dimensionally arranged. Each of the unit cells 50 includes a radiation portion 51 which includes a radiation conductor 11, a first ground conductor layer 13 spaced away from the radiation conductor 11 and having a first slot 13c, and a planar conductor layer 12 located between the radiation conductor 11 and the first ground conductor layer 13 and spaced away from the radiation conductor 11 and the first ground conductor layer 13, the planar conductor layer 12 having a second slot 12c, and a power supply portion 52 which includes a strip conductor 14 and a second ground conductor layer 15 spaced away from the strip conductor 14, the strip conductor 14 being located between the first ground conductor layer 13 and the second ground conductor layer 15.