Compact Reconfigurable Polarization Plasma Square Microstrip Patch MIMO Antenna for 5G Wireless Applications
2021
This paper proposes a reconfigurable polarization square microstrip patch antenna (SMSPA) using plasma and its multiple-input multiple-output (MIMO) for 5G wireless networks. The SMSPA has two square etched boxes with asymmetric length and positions from the SMSPA center along its diagonal. The single antenna has an overall size of 96 mm × 96 mm × 4.6 mm (0.78 λ × 0.78 λ × 0.0377 λ). The two square boxes length and position are optimized for achieving minimum axial-ratio of 0.608 dB dB at 2.44 GHz. Four polarization cases are achieved, case (1) and case (2) for left-hand and right-hand circular polarization (CP), while case (3) and case (4) for linear polarization. The overall dimensions of the proposed 4-port (2×2) MIMO antenna are 160 mm × 160 mm × 4.6 mm. The proposed MIMO antenna layout guarantee compact size with spacing distance 0.25 lamda (30.5 mm) between MIMO elements with isolation higher than 22.44 dB and an envelope correlation coefficient ECC lower than 0.015 between elements.
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