A crossed-polarized four port MIMO antenna for UWB communication

Adamu Halilu Jabire, Salisu Sani, Sani Saminu, Mohammed Jajere Adamu, Mousa I. Hussein

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


This paper presents a compact, crossed-polarized, ultra-wideband (UWB) four-ports multiple-input-multiple-output (MIMO) printed antenna. The proposed antenna is constructed from four microstrip circular patch elements fed by a 50-Ω microstrip line. Two metamaterial cell elements, in the form of a rectangular concentric double split ring resonator (SRR), are placed at the upper plane of the substrates for bandwidth improvement and isolation enhancement. The ultra-wideband frequency response is achieved using a defective ground plane. Surface current flow between the antenna's four elements is limited to ensure maximum isolation. The four-port MIMO system is designed with orthogonal antenna elements orientation on an FR4 substrate with a loss tangent of 0.02 and an overall size of 30 mm × 30 mm × 1.6 mm. Such orientation resulted in less than −17dB port-to-port isolation and an impedance bandwidth of 148% (3.1–12 GHz). The proposed UWB-MIMO antenna achieved a maximum realized gain of 6.2dBi with an efficiency of 87%. The measured and simulated results are in good agreement over the operating frequency band (3.1–12 GHz). The results also provide overall good diversity performance with the TARC < −10 dB, ECC < 0.001, DG > 9.9, MEG < −3 dB and CCL <0.1. The proposed antenna is well-suited for applications in WLAN, WIMAX and GPRs.

Original languageEnglish
Article numbere12710
Issue number1
Publication statusPublished - Jan 2023


  • Correlation coefficient
  • Cross-polarized elements
  • Metamaterials
  • Mutual coupling

ASJC Scopus subject areas

  • General


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