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Full-space beam scanning based on transmission reflection switchable quadratic phase metasurface
Optics Express
|October 19, 2022
Summary
This study introduces a novel full-space beam scanning metasurface. It achieves beam scanning in both transmission and reflection modes, advancing electromagnetic wave manipulation for applications like wireless communication.
Area of Science:
- Electromagnetic Metasurfaces
- Wave Manipulation
- Antenna Technology
Background:
- Metasurfaces enable efficient beam scanning due to integration, low cost, and light weight.
- Existing metasurfaces typically operate in either transmission or reflection mode, limiting their application scope.
Purpose of the Study:
- To propose and demonstrate a full-space beam scanning metasurface.
- To overcome the limitations of single-mode (transmission or reflection) metasurfaces.
Main Methods:
- Development of a transmission-reflection switchable meta-atom.
- Implementation of a quadratic phase distribution across the metasurface.
- Experimental validation using a 20x20 metasurface array (400 units).
Main Results:
- Achieved beam scanning of ±35° in both transmission and reflection modes.
- Experimentally validated the metasurface's full-space scanning capability.
- Simulations confirmed larger scanning angles (±45°) with a 30x30 array (900 units).
Conclusions:
- The proposed metasurface enables versatile beam steering across the full space.
- This technology offers significant potential for advancements in wireless communication and radar detection systems.
- The transmission-reflection switchable meta-atom design expands possibilities for electromagnetic wave control.
