Pattern-Diversity Four-Element MIMO Antenna with Enhanced Isolation for Millimeter-Wave 5G Applications
| Authors | D. Haimoune1, B. Guenad2, H.A. Bakir2, A. Zidour3, H.A. Benghenia4 |
| Affiliations |
1Department of Electronics, Faculty of Technology, Signals, Systems and Artificial Intelligence Laboratory (2SAIL), Hassiba Benbouali University of Chlef, Algeria 2Department of Electronics, Faculty of Technology, Hassiba Benbouali University of Chlef, Algeria 3Department of Electrical Systems Engineering, Faculty of Technology, LIST Laboratory, M’hammed Bougara University, Boumerdes 35000, Algeria 4Department of Electronics and Telecommunications, Faculty of Science and Technology, Belhadj Bouchaib University of Ain Temouchent, Algeria |
| Е-mail | d.haimoune@univ-chlef.dz |
| Issue | Volume 18, Year 2026, Number 3 |
| Dates | Received 13 April 2026; revised manuscript received 19 June 2026; published online 26 June 2026 |
| Citation | D. Haimoune, B. Guenad, J. Nano- Electron. Phys. 18 No 3, 03036 (2026) |
| DOI | https://doi.org/10.21272/jnep.18(3).03036 |
| PACS Number(s) | 84.40.Ba |
| Keywords | MIMO (28) , Pattern diversity, Millimeter-wave (mmWave), High isolation, Antenna design, Fifth-Generation (5G). |
| Annotation |
In this work, we present a compact four-port MIMO antenna designed for millimeter-wave 5G systems. The antenna operates across the 34.8 to 48.6 GHz frequency range, providing an impedance bandwidth of roughly 28.36 %. It was fabricated on a Rogers RT/Duroid 5880 substrate (r = 2.2, thickness 0.787 mm, tan = 0.0009), which keeps losses very low while maintaining strong performance. Our measurements show that the antenna reaches a peak gain of 9.9 dB and exhibits excellent impedance matching, with a return loss of – 46 dB at 43 GHz. The MIMO configuration performs reliably: inter-element isolation exceeds 20 dB, ECC stays below 0.05, and the Mean Effective Gain (MEG) is – 3.0103 dB. This confirms that signals are received consistently and evenly across all ports. One of the things that stands out about this design is its simplicity. Unlike antennas that rely on multiple layers or decoupling techniques, this planar structure is easy to fabricate and integrate directly into 5G hardware. Even with a compact footprint of just 28 36 mm2, it delivers excellent efficiency and stable broadband performance. Altogether, this antenna provides a practical and reliable solution for next-generation mmWave MIMO communication, offering wideband operation, strong isolation, and pattern diversity all packed into a small, easy-to-build design. |
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List of References |
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