V-band single-layer slot array fed by ridge gap waveguide

A compact feeding structure for slot arrays is proposed in the context of so-called ridge gap waveguides. Slots are fed through a corporate feed network in ridge gap waveguide technology and backed by coaxial cavities. Coaxial cavities are very easy to integrate within the bed of nails hosting the ridge and lead to very compact 2 χ 2 basic radiating cell.