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Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry

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Plasma Generator with Dielectric Rim and FSS Electrode for Enhanced RCS Reduction Effect.

Taejoo Oh¹, Changseok Cho¹, Wookhyun Ahn¹

¹Department of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Korea.

Sensors (Basel, Switzerland)

|December 28, 2021

Summary

This study demonstrates a novel method to reduce radar cross-section (RCS) using plasma technology. A frequency selective surface (FSS) electrode and dielectric rim in a dielectric barrier discharge (DBD) generator achieved up to 6.4 dB RCS reduction.

Keywords:

FSS X-band dielectric-barrier-discharge plasma radar cross section

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Area of Science:

Electromagnetics and Plasma Physics
Materials Science for Radar Applications

Background:

Minimizing radar cross-section (RCS) is critical for stealth applications.
Plasma generators offer potential for active RCS reduction.
Frequency selective surfaces (FSS) can manipulate electromagnetic waves.

Purpose of the Study:

To experimentally verify a method for enhanced RCS reduction of planar targets.
To investigate the use of a dielectric barrier discharge (DBD) plasma generator with an FSS electrode and dielectric rim.
To maximize RCS reduction by optimizing FSS passbands and polarization independence.

Main Methods:

Utilized a dielectric barrier discharge (DBD) plasma generator with a frequency selective surface (FSS) as an electrode.
Designed the FSS to match radar signal passbands for minimized conductor effect.
Incorporated a dielectric rim between the FSS electrode and the target for additional RCS reduction.

Main Results:

Achieved significant RCS reduction by optimizing FSS design for plasma interaction.
Demonstrated polarization-insensitive RCS reduction by designing the FSS accordingly.
Experimentally verified up to 6.4 dB RCS reduction in the X-band using the fabricated plasma generator.

Conclusions:

The proposed method effectively reduces the RCS of planar targets using plasma.
The combination of FSS electrodes and dielectric rims enhances plasma-based RCS reduction.
This technique offers a promising approach for advanced stealth technologies.