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5G communications at frequencies below 6 GHz require a new type of antenna, thus designers have created a wideband microstrip patch antenna (WMP A). To achieve such a broad frequency range, the suggested antenna makes use of a new defective ground structure (DGS). For the antenna to work better, a triangular strip is added to the ground plane. In addition to improve the gain of the microstrip-antenna, the WMP A proposed uses the reflective plate to focus on the side lobes and reduce the creation of the main lobes. The suggested WMP A is designed and built on a FR-4 epoxy substrate, and the inset feed approach is utilised in order to provide the WMP A with its input. Utilizing the CST Microwave Studio Suite, the simulation of the proposed antenna and its subsequent optimization are carried out. The WMP A takes up a minimal amount of space on the substrate, yet it achieves excellent results in terms of gain, directivity, and radiation efficiency. The suggested antenna has a frequency range of 4.93 GHz to 5.765 GHz, which allows it to cover the sub-6 GHz portion of the 5G spectrum ranging from 4.9 GHz to 5.8 GHz. The computed and measured properties of the antenna demonstrate that the this high gain compact WMPA is suitable for the applications operating at frequencies below 6 GHz.
R et al. (2022) studied this question.