Advanced 4-Element UWB-MIMO Antenna Design: Achieving High Isolation and Multi-Band Rejection for Advanced Wireless Applications

Year : 2025 | Volume : 15 | Issue : 01 | Page : 40-62
    By

    Nelly Shafik,

  • Hazem Hassan Elbanna,

  • Sara Kamal Ghazy,

  1. Lecturer, Department of Communication Engineering, Modern Academy for Engineering and Technology, Cairo, Egypt
  2. Student, Department of Electronics Engineering and Communications Technology, Modern Academy for Engineering and Technology, Cairo, Egypt
  3. Student, Department of Electrical Engineering, Faculty of Engineering, Mansoura University, Mansoura, Egypt

Abstract

In this study, we present the design, fabrication, and analysis of a step-by-step Ultra-Wideband (UWB) Multi-Input Multi-Output (MIMO) antenna operating from 3 to 14 GHz. The antenna consists of four elements, each characterized by high isolation and equipped with four band-rejection features. These elements are implemented on a Rogers substrate with εr=3. Each antenna element is a modified rectangular patch, incorporating partial ground etching to achieve wider bandwidth. Two sets of U-Shape and H-L shape slots are integrated into the patch to act as band-reject filters. The assigned four-band rejections target frequencies at 5.5 GHz (WLAN), 7.5 GHz (lower X-band), 9.5 GHz (upper X-band), and 12.9 GHz (KU-band). Isolation between antenna elements exceeds 15 dB, effectively reducing mutual coupling. We simulate and calculate MIMO diversity parameters across the entire frequency band which showed acceptable results. Our measured data closely aligns with simulation results, validating the accuracy of this antenna design.

Keywords: Antenna design, element, UWB, MIMO, multi band reject antennas

[This article belongs to Journal of Communication Engineering & Systems ]

How to cite this article:
Nelly Shafik, Hazem Hassan Elbanna, Sara Kamal Ghazy. Advanced 4-Element UWB-MIMO Antenna Design: Achieving High Isolation and Multi-Band Rejection for Advanced Wireless Applications. Journal of Communication Engineering & Systems. 2025; 15(01):40-62.
How to cite this URL:
Nelly Shafik, Hazem Hassan Elbanna, Sara Kamal Ghazy. Advanced 4-Element UWB-MIMO Antenna Design: Achieving High Isolation and Multi-Band Rejection for Advanced Wireless Applications. Journal of Communication Engineering & Systems. 2025; 15(01):40-62. Available from: https://journals.stmjournals.com/joces/article=2025/view=201629



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Regular Issue Subscription Review Article
Volume 15
Issue 01
Received 09/01/2025
Accepted 19/01/2025
Published 05/02/2025
Publication Time 27 Days
Total Visits: 35


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