Design and Analysis of a MIMO Antenna with DGS for Wireless Applications

This work presents the design as well as the analysis of a Micro-strip antenna's bandwidth enhancement using the Defect in Ground Surface (DGS) with the aid of CST STUDIO software. The simulated antenna is found to be operating in the C band, Sub6 GHz, and X-band of IEEE frequency bands with a gain in the boundary of 3.3 dBi-4 dBi. FR-4 (1.6 mm thick) substrate material with a relative permittivity of 4.30 and a loss tangent of approximately 0.025 was used for the design. The suggested tri-band antenna is 10 mm × 10 mm × 1.6 mm in total size. Greater than 80% is found to be the overall simulated radiation efficiency. Additionally, the suggested antenna design is evaluated using MIMO performance measures, demonstrating good MIMO operation and a maximum envelope correlation coefficient value as well as the diversity gain (DG) are noted; these are discovered to be below the typical cutoff. ECC is <0.01 and DG is 10 dB is noted.