Reducing radar cross section of flat metallic targets using checkerboard metasurface: Design, analysis, and realization

Aiming at the large-scale application of metasurface in the field of radar stealth, we present a hybrid resonance-based and dispersion substrate integrated checkerboard metasurface (CMS) for reducing the radar cross section (RCS) of flat metallic targets. Considering the frequency-dependent characte...

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Veröffentlicht in:Journal of applied physics 2023-07, Vol.134 (4)
Hauptverfasser: Wang, Chao, Wang, Ru-Zhi, Zhang, Sheng-Jun, Wang, Han, Wang, Wen-Song
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Wang, Ru-Zhi
Zhang, Sheng-Jun
Wang, Han
Wang, Wen-Song
description Aiming at the large-scale application of metasurface in the field of radar stealth, we present a hybrid resonance-based and dispersion substrate integrated checkerboard metasurface (CMS) for reducing the radar cross section (RCS) of flat metallic targets. Considering the frequency-dependent characteristics of such a dispersion material, a pair of single and dual resonant artificial magnetic conductor meta-atoms with the modified “crusades-like” cell topologies is employed to maximize the operating bandwidth; besides, a comprehensive and thorough investigation on the resonance mechanism is conducted in this paper to provide an intuitive physical insight of meta-atoms’ reflection responses. By comparing the predicted results with simulations, the quasi-periodic effect is introduced to explain the frequency shift of 10 dB RCS reduction bandwidth. In the implementation procedure, a prototype of the designed RCS reducer with a total dimension of 180 × 180 mm2 is fabricated and measured, the 10 dB RCS reduction bandwidth of theoretical simulation and experimental measurement are basically consistent, and the performance improvement of 8 dB RCS reduction in the experimental results can be attributed to the dispersion effects of the dielectric substrate. With a better figure of merit, our efforts may serve as a useful exemplar for the economical CMS architecture in radar evasive applications.
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source AIP Journals Complete; Alma/SFX Local Collection
subjects Applied physics
Bandwidths
Dispersion
Figure of merit
Frequency shift
Metasurfaces
Radar cross sections
Resonance
Substrates
Topology
title Reducing radar cross section of flat metallic targets using checkerboard metasurface: Design, analysis, and realization
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