Development of a Broadband Antenna for 5G Sub-6 GHz Cellular and IIoT Smart Automation Applications

Nowadays, 5G driven wireless technology is getting more attention due to its capability of ensuring high bandwidth, faster data transfer, low latency and system-on-chip (SoC) compactness. New and more effective antenna designs are necessary for these radio communication systems. This research paper presents a novel omnidirectional broadband microstrip antenna development for usage in point-to-point gateway terminals for the industrial internet of things (IIoT) and 5G Sub-6 GHz enabled cellular networks. The broadband antenna structure operates from 3 GHz to 4.3 GHz. The finite element method has been used in computer simulation microwave studio (CST-MWS) software to compute, simulate, and optimize the dimensions of the antenna and its operational settings. The antenna holds a compact dimension, measuring of $38\times 28\times 0.79 mm^{3}$. Rogers RT5880 material, which has a dielectric constant of 2.2 and a thickness of 0.79 mm, is chosen as the substrate for the antenna construction. The discussed antenna structure offers a low reflection coefficient of -37.76 dB at 3.70 GHz, a standard gain of 2.10 - 3.70 dB, a standard directivity of 2.70 – 3.90 GHz, a greater operating bandwidth of 1.30 GHz, an omnidirectional radiation pattern, and high energy efficient property.