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    Nature inspired MIMO antenna system for future mmWave technologies
    (MDPI, 2020) Rahman, Saifur; Ren, Xin-cheng; Altaf, Ahsan; İrfan, Muhammad; Abdullah, Mujeeb; Muhammad, Fazal; Anjum, Muhammad Rizwan; Mursal, Salim Nasar Faraj; AlKahtani, Fahad Salem
    In this work, a new Multiple Input Multiple Output (MIMO) antenna system with a novel shape inspired by nature is proposed for Fifth-Generation (5G) communication systems. The antenna is designed on a Rogers 5880. The dielectric constant of the substrate is 2.2, and the loss tangent is assumed to be 0.0009. The gain of the system for the desired bandwidth is nearly 8 dB. The simulated and the measured efficiency of the proposed system is 95% and 80%, respectively. To demonstrate the capability of the system as a potential candidate for future 5G communication devices, MIMO key performance parameters such as the Envelope Correlation Coefficient (ECC) and Diversity Gain (DG) are computed. It is found that the proposed system has low ECC, constant DG, and high efficiency for the desired bandwidth.