Efficient Design of Reflectarrays Using Planar Microstrip and 3D All-Metal Unit Cells for 5G Applications

  • Rania ElsharkawyEmail author
  • Moataza Hindy
  • A.-R. Sebak
  • Adel Saleeb
  • El-Sayed M. El-Rabaie
Research Paper


This paper presents two designs of reflectarrays with two different unit cells: a novel broadband microstrip unit cell and a 3D all-metal unit cell. The microstrip unit cell consists of two concentric octagonal rings plus an octagonal patch with an empty cross inside. On the other hand, the all-metal unit cell is composed of a pure copper cuboid. These reflectarrays are designed to work around 28 GHz for suitable 5G operation. A pyramidal horn antenna is used for the feeding purpose. The F/D ratio is equal to one. The reflectarray is 107 mm × 107 mm in dimensions. The simulation results show that the reflectarray based on the microstrip unit cell achieves a 1-dB gain-bandwidth of about 31.2% with a gain equal to 27.2 dB at 28 GHz. On the other hand, the all-metal reflectarray achieves a 1-dB gain-bandwidth of 14.5% and a gain equal to 28.5 dB at 28 GHz. From the obtained results, it is clear that the microstrip reflectarray is superior from the gain-bandwidth perspective, while the all-metal reflectarray is superior from the gain perspective. The microstrip reflectarray has been fabricated, and its performance has been measured. A good agreement between the simulation and measurement results has been achieved.


5G mobile communications Millimeter waves Microstrip reflectarrays All-metal reflectarrays 


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Copyright information

© Shiraz University 2019

Authors and Affiliations

  • Rania Elsharkawy
    • 1
    Email author
  • Moataza Hindy
    • 1
  • A.-R. Sebak
    • 2
  • Adel Saleeb
    • 3
  • El-Sayed M. El-Rabaie
    • 3
  1. 1.Electronics Research InstituteDokki, GizaEgypt
  2. 2.ECE DepartmentConcordia UniversityMontrealCanada
  3. 3.Faculty of Electronic EngineeringMenoufia UniversityMenoufEgypt

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