Dual-Beam Series-Fed MIMO Antenna With Metasurface Loading for 5G Sub-6 GHz Access Point Applications

Authors

  • R. Anandan Department of Electronics and Communication Engineering, Dhanalakshmi Srinivasan College of Engineering and Technology Mamallapuram, Chennai, Tamil Nadu, India
  • V. Vinoth Kumar Department of Electronics and Communication Engineering, Vel Tech Rangarajan Dr.Sagunthala R&D Institute of Science and Technology Chennai-600062, Tamil Nadu, India
  • M. Pandi Maharajan Dept. of ECE, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences Saveetha University, Chennai-602105, Tamil Nadu, India
  • G. Jothi Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences Saveetha University, Chennai-602105, Tamil Nadu, India

DOI:

https://doi.org/10.13052/2025.ACES.J.401010

Keywords:

5G antenna sub-6 GHz, dual-beam, metasurface, MIMO antenna, series-fed

Abstract

This article presents a compact series-fed MIMO antenna integrated with metamaterial structures, designed for 5G sub-6 GHz applications. The design employs a Substrate Integrated Waveguide (SIW)-based power divider operating at 3 GHz, offering a wide bandwidth from 3 to 5 GHz. A series-fed dipole structure is realized by connecting four dipoles of varying lengths and spacing using a microstrip line, arranged symmetrically on both sides of the SIW divider. A square-ring metamaterial array is placed along the y-axis in front of the radiating elements to enhance performance. This configuration boosts the gain significantly, achieving values between 5 and 11 dB across 2.4 to 6.5 GHz, without increasing the antenna size or compromising efficiency. The metamaterial also improves polarization characteristics, reducing cross-polarization over the entire band. MIMO capability is achieved by placing two metamaterial-loaded radiators side by side, with an Electromagnetic Band Gap (EBG) structure on the ground plane to suppress mutual coupling. The proposed design is evaluated using key MIMO performance metrics, including mutual coupling, diversity gain (DG), envelope correlation coefficient (ECC), mean effective gain (MEG), and total active reflection coefficient (TARC), demonstrating its suitability for next-generation wireless systems.

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Author Biographies

R. Anandan, Department of Electronics and Communication Engineering, Dhanalakshmi Srinivasan College of Engineering and Technology Mamallapuram, Chennai, Tamil Nadu, India

R. Anandan, Associate Professor and Head, Department of Electronics and Communication Engineering, Dhanalakshmi Srinivasan College of Engineering and Technology, India, completed his Ph.D. in the Faculty of Information and Communication Engineering from Anna University Chennai in May 2023. His interest includes antenna, optical communication, satellite communication, digital electronics, and wireless communication. He has published seven papers in international conferences and national conferences and four papers in international journals with good impact factors.

V. Vinoth Kumar, Department of Electronics and Communication Engineering, Vel Tech Rangarajan Dr.Sagunthala R&D Institute of Science and Technology Chennai-600062, Tamil Nadu, India

V. Vinoth Kumar, Assistant Professor, Department of Electronics and Communications, Vel Tech High Tech Dr Rangarajan Dr Sakuntala Engineering College, India. He completed his Ph.D. at the Faculty of Information and Communication Engineering from Anna University Chennai in May 2022.

M. Pandi Maharajan, Dept. of ECE, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences Saveetha University, Chennai-602105, Tamil Nadu, India

M. Pandi Maharajan, Associate Professor, Department of ECE, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, India. He completed his Ph.D. in the Faculty of Information and Communication Engineering from Anna University Chennai in May 2020.

G. Jothi, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences Saveetha University, Chennai-602105, Tamil Nadu, India

G. Jothi received the B.E. and M.E. degrees in Computer Science Engineering from the Anna University Chennai, India. She is adjunct professor in ECE at Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai.

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Published

2025-10-30

How to Cite

[1]
R. . Anandan, V. V. . Kumar, M. P. . Maharajan, and G. . Jothi, “Dual-Beam Series-Fed MIMO Antenna With Metasurface Loading for 5G Sub-6 GHz Access Point Applications”, ACES Journal, vol. 40, no. 10, pp. 1045–1054, Oct. 2025.

Issue

2025: Vol 40 Iss 10

Section

General Submission

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