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2024-06-11
A Compact Wide-Band Circular Slot Quad-Port MIMO Antenna for 5G Wireless Applications
By
Progress In Electromagnetics Research Letters, Vol. 120, 65-71, 2024
Abstract
This paper introduces a 4-port antenna tailored for 5G, operating in the 4.4 to 7.25 GHz (Fractional Bandwidth is 48.9%) range with a 10 dB impedance bandwidth. The operating bandwidth includes the n79 band (4.4-5 GHz), 5G WLAN band (5.125-5.825 GHz), and Wi-Fi 6E band (5.925 to 7.125 GHz). Constructed on a compact FR4 substrate (0.057λ × 0.057λ × 0.0018 λ (where λ is the wavelength at 4.4 GHz), it exhibits robust performance in fabrication and measurements. The single antenna covers a total area as small as 20 × 17.6 mm2, which enables the compactness of the MIMO antenna with a gain of up to 6 dBi and 85% radiation efficiency; it supports MIMO with a low correlation coefficient (< 0.02), high diversity gain (up to 9.98 dB), and minimal channel capacity loss (0.25 bps/Hz). The Total Active Reflective Coefficient (TARC) is computed to validate MIMO performance over the operating bandwidth. Featuring bidirectional radiation patterns in both E-plane and H-plane, the antenna is well suited for 5G applications, demonstrating potential for future wireless systems.
Citation
Purushothaman Janaki Ramal, Syed Nawab Syed Althaf, Kannan Vishnulakshmi, Palaniselvan Sundaravadivel, and Dhandapani Rajeshkumar, "A Compact Wide-Band Circular Slot Quad-Port MIMO Antenna for 5G Wireless Applications," Progress In Electromagnetics Research Letters, Vol. 120, 65-71, 2024.
doi:10.2528/PIERL24040301
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