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Analysis and Design of an X-Band Reflectarray Antenna for Remote Sensing Satellite System.

Shimaa A M Soliman1, Eman M Eldesouki1, Ahmed M Attiya1

  • 1Microwave Engineering Department, Electronics Research Institute, Joseph Tito St., Huckstep, El Nozha, Cairo 11843, Egypt.

Sensors (Basel, Switzerland)
|February 15, 2022
PubMed
Summary

This study designed an X-band reflectarray antenna for medium Earth orbit (MEO) remote sensing satellites. The novel design achieves a flat-top radiation pattern, ensuring consistent performance across the satellite

Keywords:
flat-top radiation patterngenetic algorithmreflectarray antennaremote sensing satellite system

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Area of Science:

  • Electromagnetics and Antenna Engineering
  • Satellite Communication Systems

Background:

  • Medium Earth Orbit (MEO) satellite systems require antennas with specific radiation patterns for remote sensing applications.
  • Achieving a uniform response over a satellite's coverage area is crucial for data acquisition quality.

Purpose of the Study:

  • To design and analyze an X-band reflectarray antenna for MEO remote sensing satellites.
  • To achieve a flat-top radiation pattern with a 29° beam width for consistent coverage.
  • To investigate broadside and tilted pencil beam reflectarrays.

Main Methods:

  • Numerical simulation was used to determine field distributions from a Yagi-Uda feeding element.
  • Genetic Algorithm (GA) optimization was employed to derive the necessary phase distribution for the flat-top pattern.
  • Stacked circular patches were used as reflecting elements to achieve a wide phase shift range.

Main Results:

  • A reflectarray antenna capable of producing a flat-top radiation pattern was successfully designed.
  • The stacked circular patch elements provided the required wide range of reflection phase shift.
  • The antenna was fabricated and measured, validating the design.

Conclusions:

  • The proposed X-band reflectarray antenna meets the requirements for MEO remote sensing systems.
  • The design methodology, utilizing GA and stacked patches, is effective for achieving specific radiation patterns.
  • This work contributes to the development of advanced antennas for satellite applications.