Reconfigurable Sea-Water Based Reflectarray Antenna for UHF Applications

  • Saber Helmy Zainud-Deen
  • Hend Abd El-Azem MalhatEmail author
  • Marwa Mohamed Abdelbary


High efficiency sea-water based reflectarray antenna for maritime wireless communications at 740 MHz is introduced in this paper. The proposed reflectarray consists of 169 unit-cell elements with area of 330.2 × 330.2 cm2. Each unit-cell element consists of a cylindrical dielectric container filled with sea-water and is mounted on a conducting plate. It introduces a reflection phase variation from 0 to 313 degrees. The reflectarray is designed and analyzed using the finite integral technique and compared with that calculated using the finite element method. The radiation characteristics of 13 × 13 sea-water based reflectarray are investigated and presented. The main beam direction of the sea-water based reflectarray is controlled by the water level in each unit-cell element through an electronic valves. The reflectarray introduces a maximum gain of 26.2 dB at 740 MHz and 1-dB gain bandwidth of 50 MHz The effect of temperature variation on the electrical properties of sea-water material and their effect on the radiation characteristics of the water-based reflectarray are introduced.


Water antenna Reflectarray Beam-steering 



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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Electrical Communication Engineering, Faculty of Engineering and TechnologyBadr University in CairoCairoEgypt
  2. 2.Department of Electrical Communication Engineering, Faculty of Electronic EngineeringMenoufia UniversityMenoufEgypt

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