Design and Implementation of a Two-Element MIMO Antenna Utilizing Metamaterial-Based Superstrate for 5G Applications

K. Mahesh , N. S. Ganesh , J. Madhu , P. S. N. Murthy , Dr. V. Dhana Raj Ch. Sridevi

MIMO antenna, 5G communication, metamaterial, superstrate, mutual coupling reduction, isolation enhancement, gain improvement.

This paper presents a compact two-element multiple-input multiple-output (MIMO) microstrip antenna system for sub‑6-GHz fifth-generation (5G) wireless applications, enhanced by a metamaterial‑based superstrate. The baseline configuration consists of two closely spaced rectangular patch elements on an FR4 substrate, which inherently suffer from strong mutual coupling due to the limited edge‑to‑edge spacing. To alleviate this problem, a periodic array of modified split‑ring resonator (SRR) unit cells is implemented above the antenna as a metamaterial superstrate. The unit cell is engineered to exhibit appropriate resonant behavior near the operating frequency so that the superstrate can manipulate the near‑field distribution and focus radiation in the broadside direction.Full‑wave simulations and experimental measurements confirm that the metamaterial‑loaded MIMO antenna achieves isolation better than −20 dB between antenna elements, representing an improvement of more than 15 dB compared with the bare arrangement. The peak realized gain increases from approximately 3.8 dBi to 6.4 dBi, providing more than 2 dB enhancement, and the −10 dB impedance bandwidth is slightly widened. MIMO diversity metrics, including envelope correlation coefficient (ECC), diversity gain (DG), mean effective gain (MEG), total active reflection coefficient (TARC), and channel capacity loss (CCL), fall within acceptable ranges for practical 5G systems. These results demonstrate that the proposed metamaterial superstrate offers a practical, non‑intrusive approach to simultaneously improving isolation and gain in compact MIMO antenna designs.

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"Design and Implementation of a Two-Element MIMO Antenna Utilizing Metamaterial-Based Superstrate for 5G Applications", IJSDR - International Journal of Scientific Development and Research (www.IJSDR.org), ISSN:2455-2631, Vol.10, Issue 4, page no.e221-e229, April-2025, Available :https://ijsdr.org/papers/IJSDR2504423.pdf

Volume 10 Issue 4, April-2025

Pages : e221-e229

Paper Reg. ID: IJSDR_308656

Published Paper Id: IJSDR2504423

Downloads: 000133

Research Area: Science and Technology

Country: -, -, India

Published Paper PDF: https://ijsdr.org/papers/IJSDR2504423

Published Paper URL: https://ijsdr.org/viewpaperforall?paper=IJSDR2504423

DOI: https://doi.org/10.56975/ijsdr.v10i4.308656

ISSN: 2455-2631 | IMPACT FACTOR: 9.15 Calculated By Google Scholar | ESTD YEAR: 2016

An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 9.15 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator

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