Metasurface covered millimeter-wave MIMO antenna array
This paper describes the design of a unique 26 GHz Multiple-Input, Multiple-Output (MIMO) antenna array for 5G millimeter-wave (mm-Wave) broadband applications. The antenna comprises a 2×1 array of radiating elements excited through a T-junction power divider. The antenna array, with dimensions of 12×18mm2, offers a wide operational bandwidth between 25.05 and 27.8 GHz, corresponding to a fractional bandwidth of 10.4%. It is a modified four-element MIMO system, in which the radiating elements are arranged in parallel with an inter-element spacing of 1.5λo at 26 GHz and oriented orthogonally to one another. To further enhance the gain, isolation, and overall performance, a metasurface layer comprising a 5×6 array of rectangular split-ring resonators (RSRs) is strategically placed above the antenna. This metasurface acts as a passive spatial filter and phase modulator, enabling wavefront shaping and polarization control. Constructed on a Rogers RT/duroid substrate with a thickness of 0.8 mm, the proposed MIMO system achieves an average gain of 7.85 dBi, a peak gain of 9.1 dBi at 25.8 GHz, an inter-element isolation of –24 dB, and an ECC of less than 0.0005.
Authors
- Esraa Mousa Ali (ORCID: https://orcid.org/0000-0003-2589-6176)
- Nasr Rashid (ORCID: https://orcid.org/0000-0003-4725-2072)
- Mohammad Alibakhshikenari (ORCID: https://orcid.org/0000-0002-8263-1572)
- Chan Hwang See (ORCID: https://orcid.org/0000-0001-8439-7321)
- Nouf Abd Elmunim
- Ernesto Limiti (ORCID: https://orcid.org/0000-0003-4668-7461)
- Iftikhar Ud Din (ORCID: https://orcid.org/0000-0002-7355-5790)
- Nisar Ahmad Abbasi (ORCID: https://orcid.org/0000-0002-1998-6848)
- Dion Mariyanayagam (ORCID: https://orcid.org/0000-0002-4249-5035)
- Bal S. Virdee (ORCID: https://orcid.org/0000-0001-7203-0039)
- Francisco Falcone (ORCID: https://orcid.org/0000-0002-4911-9753)
- Sadiq Ullah (ORCID: https://orcid.org/0000-0002-5299-1577)
- Takfarinas Saber
Institutions
- Al-Ahliyya Amman University (JO)
- Princess Nourah bint Abdulrahman University (SA)
- University of Rome Tor Vergata (IT)
- London Metropolitan University (GB)
- Doğuş University (TR)
- University of Engineering and Technology Lahore (PK)
- Universidad Pública de Navarra (UPNA) (ES)
- Al-Azhar University (EG)
- Ollscoil na Gaillimhe – University of Galway (IE)
- Jouf University (SA)
- Edinburgh Napier University (GB)
- Al-Azhar University (ID)
- Bahrain Polytechnic (BH)
Publication Details
- Journal
- Waves in Random and Complex Media
- Published
- 2025-10-23
- DOI
- https://doi.org/10.1080/17455030.2025.2574631
- Citations
- 6
- Primary Topic
- Antenna Design and Analysis
- Type
- article
- Field-Weighted Citation Impact
- 29.96
Funders
- European Commission
- University of Galway
- Princess Nourah Bint Abdulrahman University
- Research Executive Agency
- HORIZON EUROPE Marie Sklodowska-Curie Actions