Low frequency needlepoint-shape metamaterial absorber based on magnetic medium

Zhang, Hui Bin; Deng, Li; Zhou, Pei Heng; Zhang, Li; Cheng, Daojian; Chen, Hai Yan; Liang, Difei; Deng, Liangliang

doi:10.1063/1.4772622

Cited by 48 publications

(22 citation statements)

References 23 publications

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“…However, these broadband absorbers require increasing the thickness or complex designs. Zhang et al [2] have attempted to use magnetic absorber (MA) to improve the low-frequency performance, and the bandwidth could be extended in some degree with a relative thinner thickness, which gives us a new way to design low-frequency broadband RA.…”

Section: Introductionmentioning

confidence: 99%

“…With rapid development of stealth technology in military application, the improvement in absorption properties of electromagnetic (EM) metamaterials has attracted more and more interest, especially at low frequencies [1][2][3]. Metamaterials are attractive not only for their exotic physical effects, but also for their free design and wide range of applications, including electromagnetic wave absorber [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…The study on developing metamaterial absorber with magnetic element is ever increasing [1][2][3][11][12][13]. Cheng et al [3] proposed a composite structure based on a cross resonator, which exhibits a stronger lowfrequency absorption.…”

Section: Introductionmentioning

confidence: 99%

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Ultra-thin wideband magnetic-type metamaterial absorber based on LC resonator at low frequencies

et al. 2015

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In this paper, we propose to realize a broad absorption band in the frequency regimes of 2-6 GHz based on multiple resonances. A magnetic-type metamaterial absorber with cross-arrow pattern is further demonstrated numerically and experimentally. Two absorption resonances are generated by LC resonance, leading to bandwidth expansion. The equivalent circuit theory and the surface current distributions of the proposed absorber are discussed to analyze the physical mechanism. Moreover, the broad bandwidth can be maintained as incident angle up to 30°for transverse electric polarization and 45°for transverse magnetic polarization. Finally, experimental results show that the proposed absorber with the total thickness of 2.4 mm exhibits a -10 dB absorption bandwidth by more than 70 %. The low-frequency absorber has potential applications in the area of eliminating microwave energy.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ultra-thin wideband magnetic-type metamaterial absorber based on LC resonator at low frequencies

et al. 2015

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“…Since MMA was first put forward by Landy et al in 2008 [5], it has attracted widespread attention of the science community, due to the broad applications of the MMA in many fields, for example, miniaturization for antennas [6], stealth technology [7], thermal detectors [8,9], and the miniaturization of microwave device [10]. Over the past few years, most researches on the MMA have been concentrated on the design of MMA showing excellent performance within single-band, multi-band and broad-band [11][12][13][14][15], operations at various frequency spectra scaled from microwave to optical frequencies [16][17][18][19][20][21][22][23][24], by using different metamaterial resonators. Among these researches, however, few works paid attention to the analysis of the theories for the physic mechanisms, which is necessary for an in-depth study of the MMA.…”

Section: Introductionmentioning

confidence: 99%

Investigation of a Metamaterial Absorber by Using Reflection Theory Model

Cheng¹,

Xiong²,

Li³

2017

PIER M

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Abstract-Metamaterial absorber (MMA), as a kind of new-style artificial absorption material, has been extensively researched and discussed. Currently, however, the research focuses mainly on the development and application of the novel structure MMA, and only little work is aimed at the physical mechanism of the MMA. In order to deeply understand the absorption mechanism, in this paper, the numerical simulation results of an MMA are given. Then, based on the reflection theory modal, the numerical simulation results are well discussed and explained in detail. It is found that the theoretical results agree well with that of the simulation, which suggests that the reflection theory modal is effective for analyzing the absorption mechanism of the MMA. The main contributions of this paper are to quantitatively discuss and explain the absorption mechanism of the MMA by using the reflection theory and thus offer a consultation in design and fabrication of the advanced MMA for engineers.

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“…Different geometries of such structures have also been suggested. 11,12 Currently, metamaterials comprising ferromagnetic inclusions are widely employed as radar absorbers 13 and controllable electromagnetic materials, 14 with a full-wave simulation techniques typically employed instead of the equivalent circuit approach. As a whole, the problem of understanding of electromagnetic properties of such metamaterials has not been well studied, and further experimental and theoretical studies are needed.…”

Section: Introductionmentioning

confidence: 99%

Control over magnetic spectrum of multilayer magnetic film metamaterial

et al. 2015

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A RLC electric circuit with magnetic core is studied experimentally and theoretically as a promising design of a metamaterial cell. Laminates made of multilayered ferromagnetic films are used as the magnetic core. The wire coiled around the core allows the frequency dependence of permeability to be adjusted according to needs of a particular task by creating a region of intensive magnetic loss below the ferromagnetic resonance frequency of the bare core. The theoretic analysis is based on the quasi-statics of magnetic fields and electric currents. The intensity of the loss peak is proportional to the value of μ′2/μ″, where μ′ and μ″ are the frequency-dependent components of permeability of the core material. The magnetic spectra of cells with cores made of laminates of NiFe films and FeCo films have been measured. It is shown that the application of the winding allows the magnetic loss peak to be shifted from 1 GHz to 0.3 GHz for NiFe and from 5 GHz to 0.7 GHz for FeCo. The effective imaginary permeability at the resonant frequency increases by the factors of 5 and 6, correspondingly. The theory agrees well with the measured data.

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Low frequency needlepoint-shape metamaterial absorber based on magnetic medium

Cited by 48 publications

References 23 publications

Ultra-thin wideband magnetic-type metamaterial absorber based on LC resonator at low frequencies

Ultra-thin wideband magnetic-type metamaterial absorber based on LC resonator at low frequencies

Investigation of a Metamaterial Absorber by Using Reflection Theory Model

Control over magnetic spectrum of multilayer magnetic film metamaterial

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