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Field-programmable beam reconfiguring based on digitally-controlled coding metasurface.

Xiang Wan¹, Mei Qing Qi¹, Tian Yi Chen¹

¹State Key Laboratory of Millimeter Waves, School of Information Science and Engineering Southeast University, Nanjing 210096, China.

Scientific Reports

|February 11, 2016

Summary

This summary is machine-generated.

This study introduces a novel digital coding metasurface for beam steering in antennas. This approach offers a cost-effective alternative to traditional phased arrays, enabling advanced radar and communication systems.

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Area of Science:

Electromagnetics
Materials Science
Antenna Engineering

Background:

Traditional phased array antennas use expensive digital phase shifters for beam steering.
Metamaterials and metasurfaces offer direct electromagnetic wave modulation via subwavelength structures.
This presents an opportunity for novel beam scanning control mechanisms.

Purpose of the Study:

To present a direct digital mechanism for controlling scattered electromagnetic waves.
To develop a cost-effective alternative to conventional phased array antennas.
To demonstrate the application potential in next-generation radar and communication systems.

Main Methods:

Utilized a coding metasurface with unit cells loaded with pin diodes for binary states ('1' and '0').
Established instant communication between the coding metasurface and field-programmable gate arrays (FPGA) memory via data lines.
Implemented a digital modulation of electromagnetic waves.

Main Results:

Successfully realized a field-programmable reflective antenna with digital beam control.
Demonstrated good measurement performance of the developed antenna.
Validated the digital modulation mechanism for electromagnetic waves.

Conclusions:

The proposed digital coding metasurface provides an efficient and cost-effective beam steering solution.
This technology has significant potential for future radar and communication systems.
The direct digital control mechanism offers a new paradigm in antenna design.