Design of Quad-Port Ultra-Wideband Multiple-Input-Multiple-Output Antenna with Wide Axial-Ratio Bandwidth
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Department of Electrical Engineering, School of Engineering, Gautam Buddha University, Greater Noida 201312, India
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Department of Electrical Engineering, College of Engineering, Princess Nourah Bint Abdulrahman University, Riyadh 84428, Saudi Arabia
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Department of Computer Science, Faculty of Computing and IT, King Abdulaziz University, Jeddah 80200, Saudi Arabia
4
College of Engineering, Princess Nourah Bint Abdulrahman University, Riyadh 84428, Saudi Arabia
*
Authors to whom correspondence should be addressed.
Sensors 2020, 20(4), 1174; https://doi.org/10.3390/s20041174
Received: 5 February 2020
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Revised: 14 February 2020
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Accepted: 16 February 2020
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Published: 20 February 2020
(This article belongs to the Special Issue Microwave Devices and Wireless Sensors)
This article presents a compact, planar, quad-port ultra-wideband (UWB) multiple-input–multiple-output (MIMO) antenna with wide axial ratio bandwidth (ARBW). The proposed MIMO design consists of four identical square-shaped antenna elements, where each element is made up of a circular slotted ground plane and feed by a 50 Ω microstrip line. The circular polarization is achieved using a protruding hexagonal stub from the ground plane. The four elements of the MIMO antenna are placed orthogonally to each other to obtain high inter-element isolation. FR-4 dielectric substrate of size 45 × 45 × 1.6 mm3 is used for the antenna prototype, and a good agreement is noticed among the simulated and experimental results. The proposed MIMO antenna shows 3-dB ARBW of 52% (3.8–6.5 GHz) and impedance bandwidth (S11 ≤ −10 dB) of 144% (2.2–13.5 GHz).
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Keywords:
circularly polarized; compact; connected ground; MIMO; planar; UWB
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MDPI and ACS Style
Kumar, P.; Urooj, S.; Malibari, A. Design of Quad-Port Ultra-Wideband Multiple-Input-Multiple-Output Antenna with Wide Axial-Ratio Bandwidth. Sensors 2020, 20, 1174. https://doi.org/10.3390/s20041174
AMA Style
Kumar P, Urooj S, Malibari A. Design of Quad-Port Ultra-Wideband Multiple-Input-Multiple-Output Antenna with Wide Axial-Ratio Bandwidth. Sensors. 2020; 20(4):1174. https://doi.org/10.3390/s20041174
Chicago/Turabian StyleKumar, Pawan, Shabana Urooj, and Areej Malibari. 2020. "Design of Quad-Port Ultra-Wideband Multiple-Input-Multiple-Output Antenna with Wide Axial-Ratio Bandwidth" Sensors 20, no. 4: 1174. https://doi.org/10.3390/s20041174
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