IRO Journals
IRO Journal on Sustainable Wireless Systems

Metamaterial-Enhanced Compact MIMO Antenna for 6G Vehicular and IoT Communications

Open Access
Published: 13 July, 2026
Pages: 175-188
  • Mamallan R. , Mamallan R.
    Assistant Professor, Department of Electronics and Communication Engineering, P.T.Lee Chengalvaraya Naicker College of Engineering and Technology, Kanchipuram, India
    Assistant Professor, Department of Electronics and Communication Engineering, P.T.Lee Chengalvaraya Naicker College of Engineering and Technology, Kanchipuram, India
  • Sujitha A. , Sujitha A.
    Assistant Professor, Department of Electronics and Communication Engineering, P.T.Lee Chengalvaraya Naicker College of Engineering and Technology, Kanchipuram, India
    Assistant Professor, Department of Electronics and Communication Engineering, P.T.Lee Chengalvaraya Naicker College of Engineering and Technology, Kanchipuram, India
  • Nishanthy R. , Nishanthy R.
    Final Year Students, Department of Electronics and Communication Engineering, P.T.Lee Chengalvaraya Naicker College of Engineering and Technology, Kanchipuram, India
    Final Year Students, Department of Electronics and Communication Engineering, P.T.Lee Chengalvaraya Naicker College of Engineering and Technology, Kanchipuram, India
  • Pradeepa B. , Pradeepa B.
    Final Year Students, Department of Electronics and Communication Engineering, P.T.Lee Chengalvaraya Naicker College of Engineering and Technology, Kanchipuram, India
    Final Year Students, Department of Electronics and Communication Engineering, P.T.Lee Chengalvaraya Naicker College of Engineering and Technology, Kanchipuram, India
  • Pavithra D. , Pavithra D.
    Final Year Students, Department of Electronics and Communication Engineering, P.T.Lee Chengalvaraya Naicker College of Engineering and Technology, Kanchipuram, India
    Final Year Students, Department of Electronics and Communication Engineering, P.T.Lee Chengalvaraya Naicker College of Engineering and Technology, Kanchipuram, India
  • Sarathamani S. Sarathamani S.
    Final Year Students, Department of Electronics and Communication Engineering, P.T.Lee Chengalvaraya Naicker College of Engineering and Technology, Kanchipuram, India
    Final Year Students, Department of Electronics and Communication Engineering, P.T.Lee Chengalvaraya Naicker College of Engineering and Technology, Kanchipuram, India
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How to Cite

R., Mamallan, Sujitha A., Nishanthy R., Pradeepa B., Pavithra D., and Sarathamani S. 2026. “Metamaterial-Enhanced Compact MIMO Antenna for 6G Vehicular and IoT Communications”. IRO Journal on Sustainable Wireless Systems 8 (3): 175-88. https://doi.org/10.36548/jsws.2026.3.004.
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Keywords

6G Communication
Compact MIMO antenna
Metamaterial design
Millimeter-Wave (mmWave)
Terahertz Communication
Vehicular Communication
Internet of Things (IoT) and Mutual Coupling Reduction

Abstract

6G wireless communication enables ultrareliable, low latency, and high data rate services for various applications like vehicular communication, Internet of Things (IoT), and Extended Reality (ER). On the other hand, the antenna design for millimeter wave (mmWave) and terahertz (THz) frequencies encounters certain challenges such as limited bandwidth, reduced gain, and mutual coupling effect in MIMO systems. Therefore, this research proposes a new MIMO antenna using a metamaterial, which is suitable for 6G technology. In this case, the concept of metamaterial is used in a superstrate with a microstrip MIMO antenna for enhanced antenna performance. The 2×2 MIMO antenna is designed and studied using the software CST Microwave Studio, where important parameters like return loss, Voltage Standing Wave Ratio (VSWR), gain, efficiency, and Envelope Correlation Coefficient (ECC) were investigated. The simulation results show a significant performance improvement when compared with the standard microstrip antenna in terms of bandwidth and the reduction of mutual coupling effect.

References

  1. Ghzaoui, Mohammed EL, Jamal Belkadid, and Ali Benbassou. "Near zero index Metamaterial-based SIW antenna for 6G Sub-Terahertz applications." Results in Optics 2023, vol. 12, 100468.
  2. Raza, Muhammad Usman, Kai Zhang, and Sen Yan. "Metasurface-Assisted mutual coupling suppression in circularly polarized MIMO antenna array for Sub-6 GHz applications." Materials & Design 2024, vol. 248, 113445.
  3. Elalaouy, Ouafae, Mohammed El Ghzaoui, and Jaouad Foshi. "Enhancing antenna performance: A comprehensive review of metamaterial utilization." Materials Science and Engineering: B 2024, vol. 304, 117382.
  4. Hasan, Md Mhedi, Mohammad Tariqul Islam, Touhidul Alam, Phumin Kirawanich, Saeed Alamri, and Ahmed S. Alshammari. "Metamaterial loaded miniaturized extendable MIMO antenna with enhanced bandwidth, gain and isolation for 5G sub-6 GHz wireless communication systems." Ain Shams Engineering Journal 2024, vol. 15, no. 12, 103058.
  5. Siraj, Younes, Youssef Khardioui, Kaoutar Saidi Alaoui, and Jaouad Foshi. "High-performance terahertz patch antenna with metamaterials for advanced 6G and biomedical technologies." Scientific African 2025, vol. 28, e02716.
  6. Salehi, Mahdi, and Homayoon Oraizi. "Wideband high gain metasurface-based 4T4R MIMO antenna with highly isolated ports for sub-6 GHz 5G applications." Scientific Reports 2024, vol. 14, no. 1, 14448.
  7. Elabd, Rania Hamdy, Rania Eid A. Shehata, Ahmed JA Al-Gburi, and Marwa E. Mousa. "Compact and high-performance MIMO antenna with metasurface integration for millimeter-wave and next-generation 6G applications." Journal of Infrared, Millimeter, and Terahertz Waves 2025, vol. 46, no. 9, 62.
  8. Vetrichelvi, G., P. Gowtham, D. Balaji, and L. Rajeshkumar. "Functional metamaterials for wireless antenna applications–A review abetted with patent landscape analysis." Heliyon 2024, vol. 10, no. 13, e34022.
  9. Haque, Md Ashraful, Jamal Hossain Nirob, Kamal Hossain Nahin, Narinderjit Singh Sawaran Singh, Liton Chandra Paul, Abeer D. Algarni, Mohammed ElAffendi, and Abdelhamied A. Ateya. "Regression supervised model techniques THz MIMO antenna for 6G wireless communication and IoT application with isolation prediction." Results in Engineering 2024, vol. 24, 103507.
  10. Khaleel, Sherif A., Ehab KI Hamad, Naser Ojaroudi Parchin, and Mohamed B. Saleh. "MTM-inspired graphene-based THz MIMO antenna configurations using characteristic mode analysis for 6G/IoT applications." Electronics 2022, vol. 11, no. 14, 2152.