Comprehensive Methodology for Advancing MIMO Circular Microstrip Patch Antenna Design with Aperture Coupling and Defected Ground Structure for Ultra-Wideband Applications

This work provides a complete approach for enhancing a design and performance of circular microstrip patch antennas with multiple inputs and outputs (MIMO) for use in Ultra-Wideband (UWB) communication systems. The suggested approach combines Defected Ground Structure (DGS) and Aperture Coupling, two cutting-edge approaches, to provide the best possible antenna performance. Microstrip patch antennas can be excited for MIMO applications using an approach called aperture coupling. This methodology offers a comprehensive method for attaining better performance for UWB applications by addressing the difficulties present in MIMO systems and circular microstrip patch antennas. A microstrip patch antenna with aperture coupled feed line and Defected Ground Structures (DGS) is designed and simulated in this research. This work compares two antenna designs: one without DGS structure and the other with DGS. Antenna efficiency and bandwidth can be increased by manipulating the electromagnetic properties of ground plane through integration of DGS. The paper assesses a combined impact of these design elements on important antenna characteristics, such as diversity gain, return loss, gain, directivity, through in-depth analysis and experimentation. The results of this study make significant contribution to a field of antenna engineering by providing insightful information about intricate details of design required to create high-performance MIMO circular microstrip patch antennas that are specifically suited to the needs of contemporary UWB communication systems. The proposed method achieves 3.52 GHz of bandwidth at 5.68 GHz center frequency for without DGS while 3.57 for with DGS and isolation is 23.