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Simplistic metasurface design approach for incident angle and polarization insensitive rcs reduction
K K Indhu1, A P Abhilash2, R Anilkumar2
1Department of Electronics, Cochin University of Science and Technology, Cochin, 682022, India. indhukk@cusat.ac.in.
Scientific Reports
|September 20, 2024
Summary
This study presents a novel metasurface design for robust radar cross-section (RCS) reduction. The proposed double-layer checkerboard structure achieves wideband and stable RCS reduction across various polarizations and incident angles.
Area of Science:
- Electromagnetics and Metamaterials
- Antenna and Radar Technology
Background:
- Radar cross-section (RCS) reduction is crucial for stealth applications.
- Existing metasurface designs often struggle with polarization and incident angle dependency.
Purpose of the Study:
- To design a polarization and incident angle-insensitive metasurface for effective RCS reduction.
- To investigate the performance of a double-layer checkerboard metasurface configuration.
Main Methods:
- Utilizing an ellipse-shaped unit cell as a polarization converter.
- Arranging unit cells into a double-layer checkerboard configuration with a 45-degree rotation between layers.
Main Results:
- Achieved a wideband RCS reduction bandwidth of approximately 90%.
- Demonstrated stable RCS reduction performance irrespective of polarization and incident angle variations.
Conclusions:
- The proposed double-layer metasurface effectively achieves polarization and incident angle-independent RCS reduction.
- The design offers a promising solution for advanced stealth technologies.
