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Abstract
A four-port MIMO antenna with high isolation is presented. The antenna is primarily envisioned to cover the n48 band of Frequency Range-1 (FR-1) with TDD duplex mode. The engineered antenna has electrical dimensions of 90 × 90 × 1.57 mm3. The size miniaturization of a single antenna unit is achieved through an optimized placement of slots and extended arms. The quad-antennas are then placed orthogonally to achieve antenna diversity. The antenna resonates at 3.56 GHz and 5.28 GHz having 2:1 VSWR fractional bandwidth of 1.82% and 2.12%. The proposed resonator provides 88.34% and 79.28% efficiency at lower and upper bands, respectively. The antenna is an exceptional radiator regarding MIMO diversity performance owing to high inter-element isolation. The values of envelope correlation coefficient < 0.05, channel capacity loss is nearly 0.1 bits/sec/Hz, and total active reflection coefficient is − 24.26. The full ground plane profile aids in high directivity and cross-pol isolation. The antenna exhibits a gain of 4.2 dBi and 2.8 dBi, respectively, justifying intended application requirements. There is a good coherence between simulation and experimental results. The self-decoupled antenna poses its application in 5G and WLAN Communication Applications.
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1 Chandubhai S. Patel Institute of Technology, Charotar University of Science and Technology (CHARUSAT), Electronics and Communication Department, Changa, India (GRID:grid.448806.6) (ISNI:0000 0004 1771 0527)
2 Parul University, Faculty of Engineering and Technology, Parul Institute of Engineering and Technology, Vadodara, India (GRID:grid.510466.0) (ISNI:0000 0004 5998 4868)
3 Princess Nourah bint Abdulrahman University, Department of Information Technology, College of Computer and Information Sciences, Riyadh, Saudi Arabia (GRID:grid.449346.8) (ISNI:0000 0004 0501 7602)
4 Prince Sultan University, Security Engineering Lab, Computer Science Department, Riyadh, Saudi Arabia (GRID:grid.443351.4) (ISNI:0000 0004 0367 6372); Menoufia University, Department of Electronics and Electrical Communications Engineering, Faculty of Electronic Engineering, Menouf, Egypt (GRID:grid.411775.1) (ISNI:0000 0004 0621 4712)
5 Jouf University, Department of Electrical Engineering, College of Engineering, Sakaka, Saudi Arabia (GRID:grid.440748.b) (ISNI:0000 0004 1756 6705)