Design of Microstrip Rectangular Dual Band Antenna for MIMO 5G Applications

In today's wireless communication networks, microwave antennas play a pivotal role in ensuring efficient and reliable connectivity. This is centered on the creation of small rectangular patches for multiband applications using several sorts of flawed soil structure methodologies. This study introduces a proposed design for a microstrip rectangular dual-band antenna specifically tailored for MIMO applications in the context of 5G technology. The antenna is designed to operate at two frequency bands of 3.5 and 6 GHz. The proposed antenna is composed of a rectangular patch with a slit and a rectangular ground plane. The proposed antenna is compact, low-cost, and suitable for 5G MIMO applications. The rectangular patch antenna presented in this study demonstrates a remarkable return loss of −20.02 dB, indicating its excellent impedance matching capabilities. This antenna operates efficiently at a frequency of 5.8 GHz. The suggested antenna performs admirably and has high radiation efficiency. The U-shaped Defected Ground Structure (DGS) employed in this study exhibits an impressive bandwidth of 500 MHz at two central frequencies: 5.7 and 8.8 GHz. Additionally, it achieves a bandwidth of 300 MHz within the frequency range of 8.7–9 GHz. The simulated Frequency Dependent Ground Structure (FDGS) analysis reveals that the 10 dB return loss bandwidth percentage is 5.26%, covering the frequency range of 7.4–7.8 GHz. Moreover, the FDGS achieves an 8.94% bandwidth (11.6–12.7 GHz), demonstrating its effectiveness in providing a wide operating range for the antenna.