Broadband RCS Reduction Based on Spiral-Coded Metasurface

Fang, Yuan; Wang, Guangming; Xu, He‐Xiu; Cai, Tong; Zou, Xiao‐Jun; Pang, Ze-Hao

doi:10.1109/lawp.2017.2768129

Cited by 69 publications

(38 citation statements)

References 19 publications

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“…Although Refs. 17 and 26 have larger the bandwidth, the reference MSs also have thicker thickness. Moreover, the design is much more complex than the proposed MS.…”

Section: Ms Performancementioning

confidence: 99%

“…Metasurface (MS) is a kind of artificial materials that can be used to control the reflection/transmission EM waves with different resonant frequency, phase, and polarization. Many different kinds of MSs have been proposed to reduce RCS, such as the perfect MS absorbers, the artificial magnetic conductor chessboard structure, phase random metasurface (PRM), and phase gradient metasurface (PGM) . In 2017, a wideband RCS reduction based on the chessboard polarization conversion MS was proposed whose phase differences were preserved as 180° ± 37° .…”

Section: Introductionmentioning

confidence: 99%

“…A PRM with angular stability for ultra‐broadband RCS reduction has been investigated, which the proposed MS was composed of carefully arranged unit cells with spatially varied dimension and could cause the difference reflection phase and diffuse reflection uniformly. In 2017, a broadband RCS reduction was realized by coding 8 types of liner‐phase gradients in a spiral pattern . However, this approach suffers from an issue of complex design.…”

Section: Introductionmentioning

confidence: 99%

“…Many different kinds of MSs have been proposed to reduce RCS, such as the perfect MS absorbers, 1,2 the artificial magnetic conductor chessboard structure, [3][4][5] phase random metasurface [6][7][8][9][10][11] (PRM), and phase gradient metasurface (PGM). [12][13][14][15][16][17] In 2017, a wideband RCS reduction based on the chessboard polarization conversion MS was proposed whose phase differences were preserved as 180 AE 37 . 4 However, such a scheme has an important issues of narrowbandwidth.…”

Section: Introductionmentioning

confidence: 99%

“…In 2017, a broadband RCS reduction was realized by coding 8 types of liner-phase gradients in a spiral pattern. 17 However, this approach suffers from an issue of complex design. Recently, a new kind of coding metasurface (CM) whose unit cells based on the mirror symmetry array has provided a 180 phase difference in a broad frequency band is widely used in stealth technology.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Radar cross section reduction metasurfaces based on phase gradient and chessboard structure

Cao

Wang

2018

Int J RF Microw Comput Aided Eng

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In this article, wideband radar cross section (RCS) reduction metasurface is proposed. The unit of the metasurface is consisted of a noncentral symmetry hexagon patch with 2 semi‐circular slots at the symmetric corners. As a result, the unit has an anisotropic response for x‐ and y‐polarized wave. The reflection phase is varied with the radius of slots. The range of phase variation is extended by rotation of the unit with 90°. According to the generalized Snell's Law, 4 different phase gradient supercells with dual polarization characteristics and different gradient directions are obtained. To improve the RCS reduction, chessboard structure is used. By combining these 2 technological approaches, a wideband, polarization insensitive RCS reduction is designed, which can reflect the electromagnetic wave uniformly. Both numerical and measured results show that it enables to realize a 10 dB RCS reduction in a wideband from 8.5 to 13 GHz.

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“…Although Refs. 17 and 26 have larger the bandwidth, the reference MSs also have thicker thickness. Moreover, the design is much more complex than the proposed MS.…”

Section: Ms Performancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Radar cross section reduction metasurfaces based on phase gradient and chessboard structure

Cao

Wang

2018

Int J RF Microw Comput Aided Eng

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A Hybrid Mechanism Metasurface Based on Absorption and Phase Cancellation for Ultra‐Wideband RCS Reduction

Wu,

Zhang,

et al. 2024

Advcd Theory and Sims

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This paper proposes a hybrid mechanism based on phase cancellation and absorption to design a metasurface with ultra‐wideband 10 dB radar cross‐section (RCS) reduction from 6 to 64.7 GHz (171%). At high frequencies of 15–64.7 GHz, 10 dB RCS reduction is achieved by a phase cancellation mechanism, which is realized by arranging a perfect electric conductor (PEC) to form an arrayed structure with varying heights. At low frequencies of 6–15 GHz, 10 dB RCS reduction is achieved by the absorption mechanism, which is realized by designing a rotationally symmetric dual‐pattern absorber. The coupled mode theory (CMT) is used to explain the absorption mechanism. Additionally, it is found that a 180° phase difference is obtained by two different patterns to enhance RCS reduction in the high‐frequency band of 28–35 GHz. Finally, the phase cancellation and absorption mechanisms are combined to achieve an ultra‐wideband 10 dB RCS reduction from 6 to 64.7 GHz, which is realized by integrating the absorber into the arrayed structure to form the ultra‐wideband RCS reduction metasurface. The designed metasurface has a compact size (subwavelength), and a thin profile with 0.105λL.

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Passive techniques for target radar cross section reduction: A comprehensive review

Zaker

Sadeghzadeh

2020

Int J RF Microw Comput Aided Eng

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In this article, a comprehensive review of published techniques for reducing radar cross-section (RCS) of a target in various military and industrial applications is presented. This review contains the developments in this field over the last 24 years. In this comparative review, existing RCS reduction (RCSR) methods are categorized based on the type and the shape of their structures and their electromagnetic behavior and a variety of techniques of passive cancelation for RCSR is presented including the structures formed by both conductor and dielectric such as frequency selective surface, electromagnetic band gap, artificial magnetic conductor, different types of metasurfaces, polarization rotation reflective surface, and their combinations as hybrid techniques. A section is allocated for comparison in which a comprehensive comparison is drawn based on different characteristics of the structures, that is, the number and thickness of substrate layers, complexity and cost, RCSR bandwidth and level, their efficiency for TE and TM polarization, and their pros and cons. Moreover, the standard simulation and measurement setups and different kinds of optimization algorithms such as genetic algorithm, particle swarm optimization, and so on applied for RCS are presented and described. Finally, the conclusion, recommendations for future researches, and a trend of how the topic is possibly moving forward to overcome the main challenges are presented.

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Broadband RCS Reduction Based on Spiral-Coded Metasurface

Cited by 69 publications

References 19 publications

Radar cross section reduction metasurfaces based on phase gradient and chessboard structure

Radar cross section reduction metasurfaces based on phase gradient and chessboard structure

A Hybrid Mechanism Metasurface Based on Absorption and Phase Cancellation for Ultra‐Wideband RCS Reduction

Passive techniques for target radar cross section reduction: A comprehensive review

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