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Broadband electrically controlled reflective metasurface for reconfigurable circularly polarized wavefront
Optics Express
|May 9, 2023
Summary
This study introduces a novel broadband, reconfigurable metasurface that controls circularly polarized waves. It enables flexible beam manipulation for advanced electromagnetic applications.
Area of Science:
- Electromagnetics
- Materials Science
- Metasurface Technology
Background:
- Metasurfaces offer advanced control over electromagnetic waves.
- Reconfigurable metasurfaces are crucial for dynamic wave manipulation.
Purpose of the Study:
- To present a broadband, electrically controlled, reconfigurable, circularly polarized reflective metasurface.
- To demonstrate flexible control of circularly polarized waves.
Main Methods:
- Designed a metasurface unit cell with active elements to switch chirality.
- Utilized tunable current distributions for x- and y-polarized waves.
- Simulated and measured an 8x8 reconfigurable metasurface array.
Main Results:
- Achieved good circular-polarization efficiency over a broadband range (6.82-9.96 GHz, 37% FBW).
- Demonstrated beam splitting and mirror reflection from 7.4-9.9 GHz (28.9% FBW).
- Verified flexible beam control by adjusting active elements.
Conclusions:
- The proposed metasurface provides broadband, reconfigurable control of circularly polarized waves.
- It offers a promising platform for electromagnetic wave manipulation and communication systems.
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