High isolation metamaterial-based dual-band MIMO antenna for 5G millimeter-wave applications

Bashar Ali Esmail*, Slawomir Koziel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


This article presents a high-isolation metamaterial-based dual-band multiple-input multiple-output (MIMO) antenna for 5G millimeter-wave communication networks. The proposed antenna is a pentagon-shaped monopole that provides a dual-band response with a wide operating bandwidth at 5G 28/28 bands. The antenna is printed on 0.508-mm-thick Rogers RT5880 substrate of relative permittivity ɛr = 2.2. It exhibits a small physical size of 5.5 × 5.4 × 0.508 mm3, excluding the feeding line. The MIMO system is constructed of two symmetric radiating elements arranged adjacently with the mutual coupling of −18.5 dB at both resonant frequencies. The dual-band metamaterial is designed and placed between the two radiators to reduce the mutual coupling. Embedding a 3 × 1 metamaterial array enhances the isolation to −39 dB and −38 dB at 28 GHz and 38 GHz, respectively. The proposed system is capable of covering both 28/28 5G bands and has the merits of broad bandwidth, low profile, high gain (>5 dB), improved isolation (−38 dB), low envelope correlation coefficient (ECC) (<0.0001) and channel capacity loss (CCL) (<0.05), and high diversity gain (DG) (>9.99 dB). The system performance is verified experimentally with good agreement between the simulated and measured data. These properties demonstrate the system applicability for 5G millimeter-wave communication networks.

Original languageEnglish
Article number154470
JournalAEU - International Journal of Electronics and Communications
Publication statusPublished - Jan 2023

Bibliographical note

Funding Information:
This work was supported in part by the Icelandic Centre for Research (RANNIS), Icelandic [grant no. 217771], and in part by the National Science Centre of Poland, Poland [2018/31/B/ST7/02369].

Publisher Copyright:
© 2022 Elsevier GmbH

Other keywords

  • 5G
  • Dual-port configuration
  • Metamaterials
  • Millimeter wave communication
  • Mutual coupling


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