Dielectric Resonator Antenna Design for 5G mm-Wave Band

This work presents a design methodology for the development of a dielectric resonator antenna (DRA), which is optimized for the 28 GHz band, targeting advanced 5G and 6G applications. Traditional antenna designs, such as those for monopole and dipole antennas, face limitations at mmWave frequencies due to high conduction losses. In contrast, DRAs offer improved radiation efficiencies, wider bandwidths, and reduced losses, making them ideal for next-generation wireless systems. This paper focuses on optimizing DRAs by using a microstrip lineslot coupling feed, guided by analytical formulas and enhanced through deep neural networks (DNNs) for predicting key design parameters. The proposed antenna achieves a bandwidth of 8.5 GHz, covering the 28 GHz frequency band, and demonstrates a peak gain of 8.4 dBi, outperforming conventional single-element patch antennas. A genetic algorithm (GA) optimizes the design further, enhancing both bandwidth and gain for superior performance.