Super-Strate Based Rectangular Dielectric Resonator Antenna for Enhancing Spectrum Usage

Wireless communication and information technology are transforming the current industries by facilitating ultra-reliable and diversified services to connect almost everything to a common network for multifold applications. The impossible mission looks possible with the advent of new dielectric materials and precision 3D printing machines. This paper proposes a superstrate-based rectangular dielectric resonator antenna beyond 6 GHz for enhancing spectrum usage to mitigate future unusual spectrum requirements. The performance of the rectangular dielectric resonator antenna is optimized by bringing the effect of mutual coupling through the correct positioning and shielding of the superstrate. The proposed antenna operates from 7 GHz to 7.55 GHz with a maximum S11 of −20.2 dB and impedance bandwidth of 7.56%. This antenna focuses its beam in the broadside direction with a stable gain of around 6 dB. A simulated comparative analysis of RDRA with super-strate and without superstrate summarizes various antenna parameters.