Design of a High Gain MIMO Dielectric Resonator Antenna for 5G mm-Wave Applications

In this work a rectangular dielectric resonator-based antenna array is designed and analyzed. This explores the attainment of high gain and MIMO operation, both of which offer utility in 5G mm-wave applications. The proposed design features four rectangular dielectric radiators (DRs) that are mounted on a RT Duroid (
$\varepsilon\mathrm{r}=2.2$
) substrate, these radiators are excited by microstrip line-fed rectangular slots. Simulations demonstrate the impedance bandwidth between 28.6-29.32 GHz and an improvement of 11 dB in maximum gain. The requisite performance metrics of the proposed MIMO array antenna were simulated and evaluated. All the metrics ECC, DG and CCL were found to be within the standard threshold.