Wideband self-sustained DRA fed by printed ridge gap waveguide at 60 GHz

The design of a self-sustained cylindrical dielectric resonator antenna (DRA) fed by a printed ridge gap waveguide technology is presented. The antenna is designed to operate in the 60 GHz band. To avoid the difficulties of aligning the DRA above the coupling slot, a supporting structure made of the same DRA material is employed. This supporting structure is made by perforating the dielectric around the DRA to reduce its relative permittivity. Numerical results show an impedance bandwidth of 20.5 % from 54.3 to 66.7 GHz, and a 3-dB gain bandwidth covering the whole impedance bandwidth with a maximum gain of 9.5 dB at 62 GHz. The proposed self-sustained DRA is a strong candidate for 5
^th
generation wireless communication devices as an array element.