Broadband Waveguide Magneto-Electric Dipole Antenna for F-Band Applications

This paper describes a waveguide-fed magneto-electric dipole with a relative bandwidth of 46 %. The antenna has been milled from an aluminum block, constructed as two half-shells, and is fed by a standard WR8 rectangular waveguide. The antenna element is coupled to the waveguide through an aperture, allowing for a low profile configuration. This, combined with the choice of aluminum material as a good thermal conductor, makes the antenna an attractive option for industrial and high power radar or future 6G applications. The full-wave simulation results were validated through far-field antenna measurements. The antenna exhibits a gain of 10 dBi with unidirectional radiation pattern and its impedance bandwidth and 3 dB gain bandwidth cover the entire F-band from 90 GHz to 140 GHz.