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Updated: May 1, 2026
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Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
Published on: June 7, 2019
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Beam steering flexible transparent metasurfaces based on multi-bit phase gradient variations
Meijia Guo1, Penghui Xin1, Haoyuan Sun1
1College of Electronic Information, Qingdao University, Qingdao, 266071, China.
Scientific Reports
|May 2, 2025
Summary
This study introduces a flexible, transparent metasurface using Pancharatnam-Berry phase for precise beam steering. It effectively reduces radar cross-section and converts circular polarization, enabling applications in advanced electronics.
Area of Science:
- Electromagnetics
- Materials Science
- Optics
Background:
- Metasurfaces offer advanced control over electromagnetic waves.
- Pancharatnam-Berry (PB) phase provides a mechanism for phase manipulation.
- Flexible and transparent metasurfaces are crucial for next-generation electronic devices.
Purpose of the Study:
- To propose and demonstrate a coded metasurface design utilizing PB phase for beam steering.
- To achieve simultaneous reduction of radar cross-section (RCS) and efficient beam steering.
- To investigate the potential for flexible electronics and reconfigurable intelligent surfaces (RIS).
Main Methods:
- Design of a metasurface unit with a modified C structure for dual-resonance and wide bandwidth.
- Encoding metasurface arrays to control phase gradients and achieve desired electromagnetic responses.
- Experimental validation of beam steering capabilities and polarization conversion.
Main Results:
- The metasurface array reduces linear polarization RCS in the 13-20 GHz band.
- High polarization conversion ratio (PCR) of approximately 0.9 achieved for circularly polarized waves from 14-25 GHz.
- Demonstrated ±50° wide-angle beam steering along X- and Y-axes with 82% visible-light transmittance.
Conclusions:
- The proposed flexible and transparent metasurface effectively manipulates electromagnetic waves.
- The design enables significant RCS reduction and wide-angle beam steering.
- The technology holds promise for applications in flexible electronics and reconfigurable intelligent surfaces (RIS).
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