A Compact Transparent Dual-Element Antenna with Improved Isolation

Authors

  • Abdulati I. Abdullah Department of Electric Engineering, Faculty of Engineering, Azzaytuna University , Tarhunah, Libya Author https://orcid.org/0000-0002-3242-038X
  • fuad E. F. Mohammed Department of Electric Engineering, Faculty of Engineering, Azzaytuna University , Tarhunah, Libya Author
  • Ahmed H Elshoshi Department of Electric Engineering, Higher Institute of Engineering Technology, Tripoli, Libya Author
  • Abubaker M Algatlawi Department of Electric Engineering, Higher Institute of Science Technology, Tarhunah, Libya Author
  • Yousef A. A. Hammad Department of Electric Engineering, Higher Institute of Science Technology, Tarhunah, Libya Author

DOI:

https://doi.org/10.35778/jazu.i56.a679

Keywords:

Transparent antenna, Plexiglas, Mutual coupling, ECC, DG, 5G

Abstract

A mm-wave wideband compact transparent antenna is designed on Plexiglas substrate with dimension of 10.235x10x0.508 mm3 and then the ground plane is modified resulting in bandwidth enhancement. The proposed antenna achieves a bandwidth of 13.5 GHz and supporting two resonant frequencies at 24.7 GHz and 33.8 GHz with return losses of -35dB, and -33dB and gain of 6.4dB and 4.5dB respectively, in addition to achievable efficiency reaches up to 85%. The design is extended to two antenna elements with inverted U-slab shaped as a parasitic element introduced between antennas used for improving isolation and therefore reduce the mutual coupling. The separation between two elements is less than  resulting in isolation less than -39 dB with ECC is about 0.002 and diversity gain (DG) of 10 at the resonant frequency of 25.561 GHz to support 6 GHz of operating bandwidth. This result demonstrates a considerable improvement in antenna compactness, properties, and spectral efficiency; thereby it can be an excellent candidate to be used for 5G wideband applications and beyond. 

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Author Biographies

  • Abdulati I. Abdullah, Department of Electric Engineering, Faculty of Engineering, Azzaytuna University , Tarhunah, Libya

    Abdulati I. Abdullah received the BSc degree in Electrical and Electronic Engineering from Azzaytuna University, Libya in 2007,  and MSc degree in Data Communications form The University of Sheffield, UK in 2014. He is working as a lecturer with Department of Electric and Electronic Engineering at Azzaytuna University, Tarhunah, Libya since 2015. He is ranked as an assistant Professor since June 2023. He is serving different conferences and journals as a reviewer, and a regular reviewer with some IEEE conferences. His research interest includes: 5G wireless communications and beyond, mm-wave antennas and spatial modulation. He has many published articles in Scopus.

  • Ahmed H Elshoshi, Department of Electric Engineering, Higher Institute of Engineering Technology, Tripoli, Libya

    Ahmed H. Elshoshi received the BSc degree in Electrical and Electronic Engineering from Al-Mergeb University, Libya in 2006, and MSc degree in computing and Electronic Engineering, University of Huddersfield, UK in 2015. He is working as a full time lecturer with Department of Electric Engineering, Higher Institute of Engineering Technology, Tripoli, Libya since 2015.  His research of interest includes: 5G wireless communications and beyond, mm-wave antennas

Published

2025-12-31

Issue

No. 56 (2025): Journal of Azzaytuna University

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Abdullah, A., Mohammed , fuad, Elshoshi, A., Algatlawi, A., & Hammad , Y. (2025). A Compact Transparent Dual-Element Antenna with Improved Isolation. Journal of Azzaytuna University, 56. https://doi.org/10.35778/jazu.i56.a679