Abstract
This Paper proposes, 4×4 MIMO system working at mm-Wave frequency for next generation wireless communication that is 5G, application. The MIMO antenna is basically design to resonate at 25GHz and offers impedance bandwidth ranging from 24.195GHz to 26.59GHz which is one of the preferable frequency for mm-Wave wireless communication under 5G. The proposed antenna uses Rogger-5880 as a dielectric substrate with loss tangent of 0.0009 at mm-Wave frequency, permittivity of 2.2 and thickness of 0.5mm respectively. MIMO antenna configuration consist of four rectangular patch antenna, fed with a microstrip line which is dog bone shape, for proper impedance matching, arranged orthogonally with respect to each other. The defected ground structure, which basically consist of square slot of 5×5 mm is introduced, that provided bandwidth enhancement of 8.9%. The gain of MIMO antenna proposed is 5.38dB with the radiation efficiency of 96%, obtained through simulation. Envelope correlation coefficient and Mean Effective Gain were the two performance metric used to analyze the performance of the proposed MIMO antenna system. The obtained for ECC is < 0.005 and MEG is <-3dB for entire operating band of 2.32GHz. The MIMO antenna, proposed can be considered as promising candidate for 5G mm-Wave communication, as it offers low ECC, required MEG better impedance bandwidth.
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