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Design and Analysis of Wideband Single-Layer Reflectarray Antenna for Remote Sensing and Environmental Monitoring.

Annal Joy J¹, Sandeep Kumar Palaniswamy¹, Sachin Kumar²

¹Department of Electronics and Communication Engineering, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India.

Sensors (Basel, Switzerland)

|February 13, 2025

Summary

This study presents a wideband single-layer reflectarray antenna for Ku-band satellite services. The antenna achieves high gain and efficiency, making it suitable for various remote sensing and communication applications.

Keywords:

high gain phase range reflectarray antenna satellite communication wideband

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Area of Science:

Electromagnetics and Antennas
Satellite Communications Technology

Background:

Reflectarray antennas are crucial for satellite communication systems, offering advantages in size and weight.
Wideband operation is essential for modern satellite services, including fixed satellite service (FSS), broadcasting satellite service (BSS), and earth exploration satellite service (EESS).

Purpose of the Study:

To design and demonstrate a wideband single-layer reflectarray antenna for Ku-band applications.
To achieve high gain, efficiency, and wide fractional bandwidth for diverse satellite services.

Main Methods:

A single-layer reflectarray antenna with 441 elements was designed and fabricated on a Rogers 5880 substrate.
The antenna element comprises horizontal and vertical strips with varying sizes and circular structures.
Performance metrics including gain, bandwidth, aperture efficiency, cross-polarization, and side lobe levels were evaluated.

Main Results:

The reflectarray antenna achieved a maximum gain of 26.31 dBi.
A 1 dB gain bandwidth of 15.4% and a fractional bandwidth of 40% were obtained.
High aperture efficiency of 44.4% and low cross-polarization levels (below -21.46 dB) were demonstrated.

Conclusions:

The developed wideband single-layer reflectarray antenna meets the requirements for Ku-band applications.
The antenna's performance characteristics make it suitable for fixed satellite service, broadcasting satellite service, earth exploration satellite service, remote sensing, and environmental monitoring.