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Related Experiment Video

Updated: May 1, 2026

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

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 summary is machine-generated.

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.

Keywords:

Beam steering Flexible metasurface Multi-bit Phase gradient variations Transparency Wideband

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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).