A Miniaturized Four-Port MIMO Slotted Microstrip Patch Array Antenna Design With Reduced Mutual Coupling for 5G Wireless Applications

Authors

  • Venkatrao Kolli Research Scholar, School of Electrical and Electronics Engineering Sathyabama Institute of Science and Technology, Chennai, Assistant Professor Department of ECE, SRKR Engineering College, Bhimavaram, Andhrapradesh
  • Merlin Sheeba G Department of ECE, Jerusalem College of Engineering, Chennai, India

DOI:

https://doi.org/10.13052/2026.ACES.J.410407

Keywords:

CCL, DG, MEG, MIMO, mm-wave, 5G

Abstract

In this paper, a four-port Multiple-Input Multiple-Output (MIMO) antenna array is designed and analyzed for millimeter-wave (mm-wave) 5G applications. The configuration comprises a slotted microstrip patch array antenna excited through a T-junction power divider/combiner-based feed network. The set of truncated square slots are arranged on a rectangular patch to act as radiating surfaces. Similarly, the ground plane is a combination of rectangular and square-shaped slots used in a ground plane to enhance impedance bandwidth and radiation characteristics. The proposed fourport antenna is fabricated and the prototype is experimentally characterized for the S -parameters (S11,S21,S31,S41,S32,S42,S43), radiation pattern, and gain. Typical dimensions of the antenna are 28×28×0.254mm3. Measured results are in excellent agreement with simulated results. The four-port MIMO antenna operates effectively over the 27.45–28.55 GHz frequency range and is suitable for emerging 5G applications with a gain of 10.02 dBi. To introduce the isolation between the adjacent elements in the array, the technique of polarization diversity has been employed. The corresponding enveloper correlation coefficient (ECC) suppression has been noticed. Based on the results, the proposed antenna confirms excellent diversity performance, and hence the design can be a promising solution for mm -wave and 5G applications.

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Author Biographies

Venkatrao Kolli, Research Scholar, School of Electrical and Electronics Engineering Sathyabama Institute of Science and Technology, Chennai, Assistant Professor Department of ECE, SRKR Engineering College, Bhimavaram, Andhrapradesh

Venkatrao Kolli is currently pursuing his Ph.D. in Electronics at Sathyabama Institute of Science and Technology, Chennai, India. His research interests include antenna array design, 5G communication, and wireless communication systems. He has published several research papers in peer-reviewed international journals and conferences in these areas. He is presently working as an Assistant Professor in the Department of Electronics and Communication Engineering at S R K R Engineering College, Bhimavaram. He has guided numerous undergraduate projects related to RF engineering and smart communication systems.

Merlin Sheeba G, Department of ECE, Jerusalem College of Engineering, Chennai, India

Merlin Sheeba G received her B.E. (Electronics and Communication) degree in 2003 from National Engineering College, Kovilpatti under MS University, India, and M.E. degree in 2005 from Karunya Institute of Science and Technology, Coimbatore under Anna University. She obtained her Ph.D. degree from Sathyabama University, Chennai, in 2017. She has 18 years of teaching and research experience. She is currently working as Professor in the Department of ECE, Jerusalem College of Engineering Chennai. She has published around 45 publications in national and international journals, conferences, and book chapters. Among them, 33 are Scopus indexed, five SCI indexed, and six Web of Science indexed. Her research interests are wireless networks, antennas, IOT and embedded systems. She has published four patents and a sanctioned Government project. She is an invited reviewer in reputable international conferences and journals.

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Published

2026-04-30

How to Cite

[1]
V. . Kolli and M. . Sheeba G, “A Miniaturized Four-Port MIMO Slotted Microstrip Patch Array Antenna Design With Reduced Mutual Coupling for 5G Wireless Applications”, ACES Journal, vol. 41, no. 04, pp. 353–360, Apr. 2026.

Issue

2026: Vol 41 Iss 4

Section

General Submission

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