A 120-degree beamwidth post-wall waveguide slot array with a three-way power divider on a single-layer dielectric substrate

The authors propose a 120-degree beamwidth slot array antenna with a three-way power divider using post-wall waveguides installed on a single-layer substrate. The antenna is designed for base stations in 26 GHz-band fixed wireless access systems (FWA). It is easily manufactured at low cost for mass production by making via-holes and metal plating for the post-wall waveguides and etching for the slot array. In the vertical plane, a cosecant beam pattern is synthesized with null filling in order to get uniform illumination over the coverage area.