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Related Experiment Video

Updated: Mar 29, 2026

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

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Highly Sensitive Control Study of PD Archimedean Antenna Based on Rotating Unit Reflective Metasurface.

Lihao Luo^1,2, Junlin Gai^1,2, Dapeng Han^1,2

¹Hubei Provincial Engineering Research Center for New Energy and Grid Equipment Safety Monitoring, Hubei University of Technology, Wuhan 430068, China.

|March 28, 2026

Summary

This summary is machine-generated.

This study introduces a novel metasurface technique to significantly boost the sensitivity of Archimedean spiral antennas for detecting partial discharge (PD) in electrical equipment. The enhanced antenna shows improved signal detection during electrostatic and GIS discharges.

Keywords:

Archimedean antenna discharge detection gain metasurface control partial discharge

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Area of Science:

Electromagnetics
Antenna Theory
Metamaterials

Background:

Traditional Archimedean spiral antennas lack sufficient sensitivity for detecting partial discharge (PD) in electrical equipment.
Accurate PD detection is crucial for maintaining the reliability and safety of electrical infrastructure.

Purpose of the Study:

To develop a high-sensitivity regulation technique for PD Archimedean antennas using rotating unit-cell reflective metasurfaces.
To enhance the gain performance and detection capabilities of Archimedean spiral antennas for PD monitoring.

Main Methods:

Constructed a finite element model of an ultra-high-frequency Archimedean antenna.
Designed a rotating-unit reflective metasurface utilizing electromagnetic wave reflection and phase compensation principles.
Employed a multi-parameter joint optimization method for antenna and metasurface parameters.

Main Results:

Achieved up to 15.61 dB gain increase in the 0.3-1.5 GHz band, with an average full-band enhancement of 3.42 dB.
Observed an 88.9% increase in UHF signal amplitude during electrostatic discharge (ESD) detection.
Reported a 138.6-150% increase in UHF signal amplitude detection during gas-insulated switchgear (GIS) discharges.

Conclusions:

The rotating-unit reflective metasurface significantly enhances the gain performance of Archimedean antennas.
The proposed technique offers a viable solution for highly sensitive detection of discharges in electrical equipment.
Provides a valuable reference for developing advanced PD monitoring technologies.