Metamaterial-Based Highly Isolated MIMO Antenna for Modern Wireless Communication Applications
DOI:
https://doi.org/10.69996/fmep.2026008Keywords:
MIMO antenna, Metamaterial, mutual coupling reduction, High isolation, Sub-6GHz 5G, CST SimulationAbstract
This paper presents the design, simulation, and analysis of a compact metamaterial-based twoelement MIMO antenna with improved port isolation for modern wireless applications such as sub-6 GHz 5G, WLAN, and IoT devices. Mutual coupling between closely spaced antenna elements is mitigated by introducing a metamaterial unit cell between the radiating patches. The proposed antenna is designed and evaluated using CST Microwave Studio. Simulation results demonstrate return loss better than −25dB, isolation better than −20dB, peak gain of approximately 5dBi, and envelope correlation coefficient (ECC) below 0.1 across the operating band.
References
[1]A.Ludwig,“Mutualcoupling,gainanddirectivityofanarrayoftwoidenticalantennas,”IEEETrans.Anten nasPropag.,vol.24,no.6,pp.837–841,1976.
[2] A.Iqbal,O.A.Saraereh,A.W.AhmadandS.Bashir,“Mutual coupling reductionusingFshapedstubsinUWB-MIMOantenna,”IEEEAccess,vol.6, pp. 2755–2759, 2018.
[3] S. W. Su, C. T. Lee, and F. S. Chang, “Printed MIMO-antenna system using neutralizationlinetechnique for wireless USB-dongle applications,” IEEETrans. Antennas Propag., vol. 60, no. 2, pp. 456–463, 2012.
[4] J. Ghosh, S. Ghosal, D. Mitra and S. R. Bhadra Chaudhuri, “Mutual coupling reduction between closely placed microstrip patch antenna using meanderline resonator,” Prog. Electromagn. Res., vol. 59, pp. 115–122, 2016.
[5] S. Zhang, B. K. Lau, A. Sunesson, and S. He, “Closely-packed UWB MIMO/diversity antenna with different patterns and polarizations for USB dongleapplications,” IEEE Trans. Antennas Propag., vol. 60, no. 9, pp. 4372–4380, Sep. 2012.
[6] A.SuntivesandR.Abhari,“Miniaturizationandisolationimprovementofamultiplepatchantennasystemusingelectromagneticbandgapstructures,”Microw.Opt.Technol.Lett.,vol.55,no.7 ,pp.1609–1612,2013.
[7] A. Yu and X. Zhang, “A novel method to improve the performance of microstrip antenna arrays using a dumbbell EBG structure,” IEEE Antennas Wirel.Propag. Lett., vol. 2, pp. 170–172, 2003.
[8] W.Wu,B.Yuan, and A.Wu, “Aquad-elementUWB-MIMO antenna with band-notch and reduced mutual coupling based on EBG structures,”Int.J.AntennasPropag., vol. 2018, 2018.
[9] S.Farsi,H.Aliakbarian,D.Schreurs,B.NauwelaersandG.A.Vandenbosch,“Mutualcouplingreductionb etweenplanarantennasbyusingasimplemicrostrip U-section,” IEEE Antennas Wirel. Propag. Lett., vol. 11, pp. 1501–1503, 2012.
[10] F.G.Zhu, J.D.Xu and Q.Xu, “Reductionofmutualcouplingbetweenclosely-packed antenna elements using defected ground structure,” Electron.Lett., vol. 45, no. 12, pp. 601–602, 2009.
[11] R.Chandel,A.K.GautamandK.Rambabu,“Design and packaging of an eye-shapedmultiple-input– multiple -output antenna withhighisolationforwireless UWB applications,” IEEE Trans. Compon. Packag. Manuf. Technol., vol. 8, no. 4, pp. 635–642, 2018.
[12] Mankoju Sai Vivekananda Chary, Shaik Nanneksham Vali, Rippala Sai Kumar, Etikala Balavikas, and V Shiva Narayana Reddy, “BBS – A Blockchain Big-Data Sharing System”, FMEP, vol. 1, no. 3, pp. 148–162, 2025
[13] J.Zhu,S.Li,S.LiaoandQ.Xue,“Widebandlow-profile highly isolated MIMO antenna with artificial magnetic conductor,” IEEEAntennasWirel.Propag. Lett., vol. 17, no. 3, pp. 458–462, 2018.
[14] P. Liu, D. Sun, P. Wang and P. Gao, “Design of a dual-band MIMO antenna with high isolation for WLAN applications,” Prog. Electromagn. Res., vol.74, pp. 23–30, 2018.
[15] K. SreenivasaRao, P. Ramesh Reddy, “Multi-Band J-Shape MIMO Antenna Design For the Microwave Communication,” Journal of Microwaves and Antenna Applications, vol. 1, no. 2, 2025
[16] Y.K.Choukiker, S.K.Sharma and S.K.Behera, “Hybrid fractal shape planar monopole antenna covering multiband wireless communications with MIMO implementation for handheld mobile devices,” IEEE Trans. Antennas Propag., vol. 62, no. 3, pp. 1483–1488, 2014.
