Design of multiple-input and multiple-output antenna for modern wireless applications

Karrar Shakir Muttair (Department of Computer Techniques Engineering, College of Technical Engineering, The Islamic University, Najaf, Iraq)
Oras Ahmed Shareef (Department of Computer Techniques Engineering, College of Technical Engineering, The Islamic University, Najaf, Iraq)
Ahmed Mohammed Ahmed Sabaawi (Department of Electronics Engineering, College of Electronics Engineering, Ninevah University, Mosul, Iraq)
Mahmood Farhan Mosleh (Department of Computer Engineering Techniques, Electrical Engineering Technical College, Middle Technical University, Baghdad, Iraq)

TELKOMNIKA (Telecommunication Computing Electronics and Control)
Vol 20, No 1: February 2022

In this paper, multiple-input and multiple-output (MIMO) antennas are designed and simulated. The designed antennas are compact double-sided printed microstrip patch antennas and fed by a microstrip line. These antennas are designed for 3.5 to 10 GHz frequencies used for medical, industrial, sciences, and various fields of 5G communications and networking applications. Furthermore, a MIMO system is designed using the polarization variability of the individual antennas, which yields better results in terms of mutual coupling (S12 and S21), reflection coefficient (S11 and S22), and voltage standing wave ratio (VSWR), which is less than 2 indicate improved matching conditions. The designed antennas showed an acceptable gain (around 2 dB) and an envelope correlation coefficient (ECC) is <0.002. In addition, the proposed MIMO antennas exhibited isolation is -25 dB at 6 GHz, which is preferable in 5G mobile antennas.