Design of Checkerboard AMC Structure for Wideband RCS Reduction

Sang, Di; Chen, Qiang; Ding, Liang; Guo, Min; Fu, Yunqi

doi:10.1109/tap.2019.2891657

Cited by 109 publications

(47 citation statements)

References 25 publications

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“…Additionally, some novel semi‐analytical equations were provided for the resonant frequencies based on the ratio of two dielectric constants of two layers and the ratio of their thicknesses, which can be useful for designing appropriate structures in the other frequency bands. Recently, a planar checkerboard surface has been formed with two types of AMC unit cells for wideband RCSR (91.5% bandwidth from 3.77‐10.14 GHz) in Reference 77. In this checkerboard structure, the cancelation conditions were analytically obtained by an equivalent transmission line model through which the patterns of two AMC cells were derived from their ideal impedance conditions.…”

Section: Novel Passive Cancelation Techniques For Rcsrmentioning

confidence: 99%

“…The fifth columns of Tables 1 and 3 represent that whether the bistatic RCSR tests are included in the related articles or not. As it is presented in these tables, the bistatic RCSR have been tested in majority of the works related to FSS, 54,55 AMC, 60,61,63,64,71,72,74,75,77 EBG, 57,58 and metasurfaces 102,104,106,109,111‐113,120,128,134,137 …”

Section: Rcsr Metrics Different Setups and Full Comparisonsmentioning

confidence: 99%

“…However, the big thickness for substrate makes the structure heavy and is practically inefficient and causes several fabrication problems. Hence, in some novel works, multi‐layer structures have been suggested to control the bandwidth by the effective dielectric constant and lessen the substrate thickness 54,61,71‐74,77 . The number of substrate layers and their thicknesses are presented in the seventh columns of Tables 1 and 3 and the fourth column of Table 2.…”

Section: Rcsr Metrics Different Setups and Full Comparisonsmentioning

confidence: 99%

“…Additionally, most of them have been performed only for monostatic RCSR at normal incident angle ignoring the wave polarization. Hence, nowadays, the modern passive techniques and structures based on phase cancelation or destructive interference using surfaces including frequency selective surface (FSS), 52‐55 EM band gap (EBG), 56‐59 artificial magnetic conductor (AMC), 47,48,60‐77 polarization rotation reflective surface (PRRS), 78‐95 metasurfaces, 96‐145 and hybrid methods, 146‐149 receive a lot of attention to improve the mentioned conventional techniques and overcome their limitations. In the recent decades, researchers have made a lot of efforts on these modern passive RCSR techniques and numerous works have been proposed and completed in order to achieve a system similar to the ideal RCSR system.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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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Section: Novel Passive Cancelation Techniques For Rcsrmentioning

confidence: 99%

Section: Rcsr Metrics Different Setups and Full Comparisonsmentioning

confidence: 99%

Section: Rcsr Metrics Different Setups and Full Comparisonsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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show abstract

“…The proposed structure has significantly wider RCSR bandwidth rather than the state of the art refs. 4,6,7,[9][10][11][13][14][15] , as well as low cost, simple and light weight structure which facilities its practical applications.…”

mentioning

confidence: 99%

Ultra Wideband Radar Cross Section Reduction by using non-Resonant Unit Cells

Nadi

Sedighy

Khalaj-Amirhosseini

2020

Sci Rep

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A general approach is proposed to design ultra-wideband radar cross section reduction (RcSR) metasurface by using non-resonant unit cells in chessboard arrangement. the proposed miniaturized artificial magnetic conductor unit cell is composed of two stacked non-resonant patches separated from one another by thin dielectric substrates. the genetic optimization algorithm is used to optimize the unit cell design parameters and obtain wide 10-dB RCSR bandwidth. The proposed approach is performed to design three different RCSR metasurfaces, ideal, ROGERS and low cost. The low cost RCSR metasurface composed of low cost commercially available FR-4 substrate is fabricated and tested which reduces RCS more than 10-dB from 5.22 GHz to 30.85 GHz, 142% fractional bandwidth. This metasurface has significantly wider RCSR bandwidth rather than the state of the art references as well as low cost, simple and light weight structure which facilities its practical applications.

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Flexible Double‐Layer Adjustable Frequency Selective Surfaces Based on 3D Cross‐Shaped Kirigami Structure

Zhu,

Dong,

et al. 2024

Adv Materials Technologies

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Frequency‐selective surfaces (FSS) with flexible treatment can be employed in various applications. This paper develops a mechanically constructed flexible double‐layer adjustable FSS based on a 3D cross‐shaped kirigami structure design. Through mechanical stretching, the kirigami structure partly adhered to the ecoflex substrate enables this FSS to modulate the resonant frequencies of two filter bands synchronously. Meanwhile, the structural deformation triggered by mechanical stretching may function as a switch to adjust the filter band with a higher resonant frequency. According to the results of EM experiments and simulations, in the absence of stretching, the undeformed FSS with a double‐layer structure has two filter bands. Compared to the undeformed configuration, the stretching induces structural deformation, which results in apparent resonant frequency shifts of both the two filter bands and the contraction of the filter band with higher resonant frequency. A buckling model that has been theoretically, cumulatively, and experimentally proven is utilized to investigate the structural deformation of this FSS caused by stretching. It is convenient to switch flexible double‐layer adjustable FSS' deformation by mechanical method. This flexible double‐layer adjustable FSS offers a new design strategy for the application of FSS, paving the route for new developments in electromagnetic compatibility.

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Design of Checkerboard AMC Structure for Wideband RCS Reduction

Cited by 109 publications

References 25 publications

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

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

Ultra Wideband Radar Cross Section Reduction by using non-Resonant Unit Cells

Flexible Double‐Layer Adjustable Frequency Selective Surfaces Based on 3D Cross‐Shaped Kirigami Structure

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