Integrating non-planar metamaterials with magnetic absorbing materials to yield ultra-broadband microwave hybrid absorbers

Li, Wei; Wu, Tianlong; Wang, Wei; Guan, Jianguo; Zhai, Pengcheng

doi:10.1063/1.4862262

Cited by 97 publications

(37 citation statements)

References 36 publications

(36 reference statements)

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“…Due to the exotic electromagnetic properties of metamaterials (MMs), MAs exhibit extreme performance flexibility from the microwave to optical range for different incidence angles [9][10][11][12][13][14][15][16] and from narrowband to ultra-broadband. [17][18][19][20][21][22][23][24] One type of the unique MM, the e-near-zero (ENZ), has attracted much attention due to its strong wavemanipulating capabilities such as wave tunneling, 25 radiation phase tailoring, 26,27 radiation enhancement, 28 and total transmission or reflection. 29,30 Recently, Jin et al predicted that perfect absorption (PA) could be achieved by coating an arbitrarily thin ENZ and mu-near-zero (MNZ) of an arbitrarily low loss on a metal.…”

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confidence: 99%

Perfect absorption in ultrathin anisotropic ε-near-zero metamaterials

Zhong

2014

Applied Physics Letters

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confidence: 99%

Perfect absorption in ultrathin anisotropic ε-near-zero metamaterials

Zhong

2014

Applied Physics Letters

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“…Therefore, the investigation on EEPs is significant for the designation and prediction of a radar absorber. Li et al have found that absorbing property could be greatly improved via changing a traditional slab to a structure of multi-layered periodic square array [6]. However, the relationship between the structure and its EEPs has not been studied.…”

Section: Introductionmentioning

confidence: 99%

Calculation and Analysis of the Effective Electromagnetic Parameters of Periodic Structural Radar Absorbing Material Using Simulation and Inversion Methods

Ding¹,

Huang²,

Du³

et al. 2016

PIER M

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Abstract-Effective electromagnetic parameters (EEPs) of periodic structures fabricated mainly by carbonyl iron powders are calculated in this paper. A method of inverting the scattering parameters obtained from simulation software was used. The effect of the absorbent volume ratio and the cycle length on EEPs was studied and analyzed. The correlation of the shapes with EEPs was also researched. The empirical formulas were proposed to calculate EEPs, in which the interaction between two adjacent cells was considered. By using this method, any material could be designed as a periodic structure with controlled EEPs, and the values of EEPs were located between the electromagnetic parameter (EP) of air and that of the original material by a specific rule. The EEPs can be used to design new absorbers as the fundamental data of electromagnetic property of some fresh materials.

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“…The power dissipated in the proposed electromagnetic metamaterial absorber can be achieved under three conditions: dielectric energy loss, magnetic energy loss from the substrate, and ohmic energy loss from the metal [107], [117], [118]. The absorption is from dielectric energy losses occurred while the nonmagnetic materials like FR4 are used as the substrate.…”

Section: The Incident Energy and Power Dissipationmentioning

confidence: 99%

“…It has been used for improving the performance of microwave applications by substantially reducing the device size, and enhancing the bandwidth. Applications include the phase shifters [10], couplers [11], power dividers [12], antennas [13], absorbers [14], and resonators [15]. All these concepts contributed towards developing the areas of electromagnetic applications.…”

Section: Background and Motivationmentioning

confidence: 99%

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Synthesis and Analysis of Metamaterial Structure for Microwave Frequency Applications

Uddin¹

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produce uncertainty, therefore, most of the conventional extraction technique rely on relatively thin materials. In the thick materials, the ambiguity appears in different frequency points in several branches which produces phase error. Thus, it is essential to check the proper branch that minimizes the ambiguity and this remains under explored. This doctoral research aims to fill this gap in the scholarly literature by developing a unique extraction technique that will support reducing the ambiguity error and is able to provide accurate values for electromagnetic properties. To achieve this aim, the initial research concentrated on the Nicholsonross-weir (NRW) technique. The modified NRW technique is then applied to a long-length Drude material with known parameters for validation. Another extraction technique known as Kramers-Kronig (KK) technique is also investigated. This KK extraction technique is applied to the use of Cauchy residue integrals instead of using trapezoidal rule integration. Further investigations involved experimentation by using the proposed NRW extraction technique to provide empirical evidence, such as designing a periodic dual-star split ring Synthesis and analysis of metamaterial structure for microwave frequency applications iii resonator (DSSRR) and microwave absorber. DSSRR is an electromagnetic band gap (EBG) based metamaterial structure. The proposed DSSRR structure may be implemented with an equivalent transmission line structure. The advantage of the transmission line structure is that it realizes the artificial structure with minimum losses and produce wide bandwidth. The DSSRR structure is implemented on single unit cells and multiple unit cells. The proposed DSSRR structure delivers a wide-band performance from 7.5 GHz to 9.5 GHz and a maximum rejection up to 47 dB, which offer a sharp cut-off in the reject band. The dispersion diagram exhibits unusual characteristics in both balanced and unbalanced conditions. A microwave absorber was also developed. The proposed design offers three unique shapes without using any additional resistive sheets on top of the ground plane.The three unique shapes are octagonal ring, (OR), cross-wires (CWs), and cut-off circle (CC). The proposed shapes are insensitive to polarization angle, and can achieve perfect absorption. Further work involves the successful extraction of electromagnetic properties using the NRW technique. The numerical and experimental results agree with each other, which further confirms the metamaterial behaviour.iv Synthesis and analysis of metamaterial structure for microwave frequency applications

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Integrating non-planar metamaterials with magnetic absorbing materials to yield ultra-broadband microwave hybrid absorbers

Cited by 97 publications

References 36 publications

Perfect absorption in ultrathin anisotropic ε-near-zero metamaterials

Perfect absorption in ultrathin anisotropic ε-near-zero metamaterials

Calculation and Analysis of the Effective Electromagnetic Parameters of Periodic Structural Radar Absorbing Material Using Simulation and Inversion Methods

Synthesis and Analysis of Metamaterial Structure for Microwave Frequency Applications

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