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Single-Layer Metasurface-Based Reflectarray Antenna with H-Shaped Slotted Patch for X-Band Communication.

Jawad Ali1, Ashfaq Ahmad1, Dong-You Choi1

  • 1Communication and Wave Propagation Laboratory, Department of Information and Communication Engineering, Chosun University, Gwangju 61452, Republic of Korea.

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Summary

This study presents a novel metasurface reflectarray for X-band applications, achieving a peak gain of 25.5 dBi. The design utilizes H-shaped slotted patches for enhanced phase range and broadband performance.

Keywords:
FEBIH-shaped slotted patchhigh gainreflectarray antennareflection phase range

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Area of Science:

  • Electromagnetics and Applied Physics
  • Antenna Engineering
  • Metamaterials and Metasurfaces

Background:

  • Metasurface reflectarrays offer advanced beamforming capabilities.
  • X-band applications require efficient and compact antenna solutions.
  • Optimizing phase range and bandwidth is crucial for reflectarray performance.

Purpose of the Study:

  • To design and fabricate a high-performance metasurface reflectarray for X-band applications.
  • To investigate the impact of H-shaped slotted patches on phase range and resonance.
  • To achieve high gain, efficiency, and wide bandwidth.

Main Methods:

  • Design of unit cells with H-shaped slotted patches for wide phase variation (>480°).
  • Simulation using the Finite Element Boundary Integral (FEBI) method for a 23×23 element array.
  • Fabrication on Rogers 5880 substrate and measurement in an anechoic chamber.

Main Results:

  • Achieved a peak gain of 25.5 dBi with 63.7% aperture efficiency at 10 GHz.
  • Demonstrated excellent cross-polarization (< -33 dB) and side-lobe levels (< -21 dB).
  • Obtained a 20% 1-dB gain bandwidth, indicating broadband performance.

Conclusions:

  • The proposed H-shaped slotted patch metasurface reflectarray is suitable for X-band applications.
  • The design demonstrates high gain, efficiency, and wide bandwidth.
  • The results validate the effectiveness of the unit cell design and simulation methods.