EBG-Based Low Profile Corrugated Antenna for 5G Applications in Sub-6 GHz Spectrum

The paper describes a two-layer low-profile antenna design suitable for sub-6 GHz communications that operates at 5.8 GHz. The proposed antenna is integrated with a periodic plus-shaped EBG structure to obtain gain and bandwidth enhancement. The realized gains of the prototype with and without periodic structure are 3.48 dBi and 2.4 dBi, respectively. Additionally, it is observed that the measured bandwidth of the antenna structure at 5.75 GHz with periodic structure is 230 MHz, while without periodic structure it is 150 MHz, which accounts for 35% bandwidth enhancement. The simulated and measured results validate that the proposed compact antenna prototype is a suitable candidate for sub-6 GHz application in the 5G spectrum.