1×4 Antenna Array corporately fed by a Novel Half-Mode Groove Gap Waveguide network

This paper presents a Ka-band linearly-polarized 4-antenna array fed with a novel corporate distribution network that uses a half-mode groove gap waveguide (HM-GGW). The antenna feed has no contact with the top cover where the array antenna is located, thanks to the features inherent in gap waveguide technology (GW). This technology, with many advantages, sometimes suffers from a complex mechanization, which in this case is reversed by the novel network proposed in this paper.