Power Splitters Design in Different Groove Gap Waveguide Realizations in Millimeter Wave Band

The design of 1-to-2 power splitters based on Ka-band groove gap waveguide (GGW) technology is presented. A comparison of four splitters in both the GGW and the half-mode GGW version is presented. The perfect magnetic conductor condition uses metallic pins or mushrooms on a substrate. The splitters have an operating bandwidth between 27 and 31 GHz with a matching level below −20 dB. A loss comparison between the different waveguides is shown, and the designed splitters confirm the difference in performance between the different waveguide topologies used.