Ultra-Thin Metamaterial Absorber for Electromagnetic Window Shielding

Zhengyuan, 白正元 Bai; Xiongwei, 姜雄伟 Jiang; Long, 张龙 Zhang

doi:10.3788/aos201737.0816003

Cited by 3 publications

(1 citation statement)

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“…As a kind of artificial materials engineered to have many uncommon properties, MMs have always been a pervasive research topic of interest in optics [1][2][3], electronics [4][5][6], machinery [7][8][9], even extended to acoustics [10]. Developments of these discipline studies concentrate on more special characteristics or functionality, like [11][12][13], surface or spatial wave control [14][15][16], enhancing bandwidth [17~19], radar scattering distribution reduction [20][21][22][23], electromagnetic (EM) shielding [24]. Anomalously MMs characteristics always attribute to deliberate architectures out to randomly materials collocation and spatial architecture construction.…”

Section: Introductionmentioning

confidence: 99%

A Novel Encoding Strategy of Enhanced Broadband and Absorption Conformable Metamaterial for MW Applications

Cui

et al. 2020

IEEE Access

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Analog metamaterials (MMs) manipulate their effective medium parameters difficultly while its geometrical architecture is composed of hybrid compositions. However, the genic algorithm as a calculation analogue search algorithm seeking for optimal solution can be applied to artificial metamaterials architecture construction. Herein, a novel encoding strategy of metamaterial architecture construction utilizing multi-parameter seeking optimization was proposed. Binary encoding and decoding of the geometrical layer-thickness enables form final dimension based the objective fitness function. The algorithm iteration optimizes initial geometrical dielectric-layer thicknesses. Then, combining the optimizing initial parameter with composite multi-loops metal spatial distribution built final metamaterials in numerical analysis software. Based on this co-simulation disposition, the proposed metamaterial presents broadband features of 2.5GHz at the physical high-absorption to spatial wave over 80%. The proposed metamaterial presents low radar cross-sections, wide polarization insensitivity, and dynamical flexibility simultaneously. Moreover, a disposition of the proposed metamaterial loaded on a referenced antenna exhibits a well real applicated capability in radar cross-sections reduction for the physical passive equipment invisibility. Numerical simulation and experiment results in MMs properties of the absorption and flexibility show good agreements, suggesting the advantage of genic algorithm optimizations in co-simulation for metamaterials architecture construction which shows a good potential application in spatial complicated geometry forming.

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Section: Introductionmentioning

confidence: 99%

A Novel Encoding Strategy of Enhanced Broadband and Absorption Conformable Metamaterial for MW Applications

Cui

et al. 2020

IEEE Access

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Broadband metamaterial microwave absorber based on asymmetric sectional resonator structures

Cheng

Luo

2020

Journal of Applied Physics

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In this paper, we present a novel design of broadband metamaterial microwave absorber (MWA) based on asymmetric sectional resonator structures (SRSs), which has been verified by simulation, calculation based on circuit theory, and experiment. The broadband perfect absorption of the MWA can be obtained by assembling four asymmetric SRSs with different sizes. The numerical results indicate that the bandwidth of the broadband MWA based on asymmetric SRSs is about 16.2 times of the ones based on single SRS or four complete symmetric SRSs. The broadband perfect absorption of the proposed MWA mainly originates from the excitation of the fundamental resonance mode of the SRS. The numerical results also demonstrate that the broadband MWA exhibits an angle-insensitivity microwave absorption capacity, which is manifested as a high absorption level at large incident angles for both transverse electric and transverse magnetic modes. Thus, the proposed broadband MWA turns out to be suitable for a wide variety of potential applications in stealth technology and energy harvesting.

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Reflections on the Construction of the “Electromagnetic Field and Electromagnetic Wave” Course with Ideological-Political Elements

李

2023

CES

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Ultra-Thin Metamaterial Absorber for Electromagnetic Window Shielding

Cited by 3 publications

References 0 publications

A Novel Encoding Strategy of Enhanced Broadband and Absorption Conformable Metamaterial for MW Applications

A Novel Encoding Strategy of Enhanced Broadband and Absorption Conformable Metamaterial for MW Applications

Broadband metamaterial microwave absorber based on asymmetric sectional resonator structures

Reflections on the Construction of the “Electromagnetic Field and Electromagnetic Wave” Course with Ideological-Political Elements

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