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A Low-Profile and Ultra-Wideband Pancharatnam-Berry Coding Metasurface for High-Efficiency and Wide-Angle Circular
Cuizhen Sun1,2, Junfei Gao1,2, Huanhuan Gao3
1College of Communication and Information Engineering, Xi'an University of Science and Technology, Xi'an 710054, China.
Materials (Basel, Switzerland)
|October 16, 2024
Summary
This study presents a metasurface polarizer achieving 88% bandwidth for cross-polarized electromagnetic waves. It demonstrates high-efficiency, wide-angle anomalous reflection for advanced stealth and communication applications.
Area of Science:
- Metamaterials and Nanophotonics
- Electromagnetics and Wave Manipulation
Background:
- Metasurfaces are crucial for controlling electromagnetic waves in stealth and communication.
- Efficient manipulation of electromagnetic waves requires advanced polarization control.
Purpose of the Study:
- To develop a metasurface polarizer for integrating electromagnetic waves into cross-polarized waves.
- To achieve high-efficiency and wide-angle anomalous reflection using a coding metasurface.
Main Methods:
- Utilized an element-based polarizer for initial wave manipulation.
- Designed an eight-element coding metasurface employing the Pancharatnam-Berry phase.
- Performed simulations to validate anomalous reflection performance.
Main Results:
- Achieved 88% relative bandwidth for cross-polarized waves (15-37.1 GHz).
- Demonstrated high-efficiency (94%) and wide-angle (70°) anomalous reflection.
- Experimental results showed good agreement with simulations.
Conclusions:
- The developed coding metasurface effectively manipulates electromagnetic waves.
- The work shows significant potential for electromagnetic stealth applications.
- This approach offers a pathway for advanced wave control in communication systems.
