Ridge Gap Waveguide Slotted Array Antenna for Millimeter Wave Application - Comparative Use Case Scenario

Three scenarios of slotted array antenna based on ridge gap waveguide technology (RGW) for mmWave applications are investigated. These cases include different slot arrays: transverse, split transverse, and longitudinal slots within a frequency range of 60 to 70 GHz. The structure of the antennas and the number of slots is identical, with open terminations, while the dimensions of the slots vary. A comparative analysis of bandwidth, peak realized gain, and efficiency is reported. The transverse slotted array antenna offers higher bandwidth and greater efficiency compared to the other two proposed antennas.