Design and analysis of polarization independent conformal wideband metamaterial absorber using resistor loaded sector shaped resonators

Kalraiya, Sachin; Chaudhary, Raghvendra Kumar; Abdalla, Mahmoud A.

doi:10.1063/1.5085253

Cited by 79 publications

(32 citation statements)

References 34 publications

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“…The real (Z) and imaginary (Z) should be nearly one and zero, respectively, as impedance of the MMA must be equal to free space impedance to achieve perfect absorption [10,28]. [40]. Table 1 shows that the real (re) and imaginary (im) values of normalized impedance are close to one and zero at perfect absorption, respectively.…”

Section: Resultsmentioning

confidence: 99%

Design of an Ultra-thin Hepta-band Metamaterial Absorber for Sensing Applications

Jain¹,

Prakash²,

Gupta³

et al. 2021

Preprint

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An ultra-thin metamaterial absorber (MMA) comprises of a split-ring-cross (SRC)-shaped resonator coupled with graphene and dielectric layer backed by metallic ground plane is presented for hepta-band applications. The proposed absorber demonstrates multiple absorption peaks at 2.33, 5.24, 7.74, 8.25, 10.05, 10.97 and 12.61 THz with average absorption more than 96 % . The physical mechanism of the hepta-band absorption is analyzing by electric field distribution and attributed to the combination of dipolar and LC resonance. Furthermore, the effect of geometric parameters is analyzed to validate the optimal selection of the structural parameters. In addition, proposed MMA is analyzed for different incident and polarization angles suggesting that absorption response is insensitive to polarization angles. Compared with the previously reported MMAs, proposed design is ultra-thin (0.036λ) and compact (0.21λ) at the lowest operational frequency. The absorptivity at 12.61 THz is 99.81 % and the corresponding quality (Q) factor is 31.52 for a bandwidth of 0.40 THz. The proposed absorber can be potentially utilized in detection, sensing and imaging. Moreover, sensing performance of the proposed MMA has been investigated using overlayer thickness and overlayer permittivity.

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Section: Resultsmentioning

confidence: 99%

Design of an Ultra-thin Hepta-band Metamaterial Absorber for Sensing Applications

Jain¹,

Prakash²,

Gupta³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…The via structure reported in reference [16] provides better results for the TE polarisation and worse performance for the TM polarisation. The 3-D configuration following reference [18] showed stable performance for both polarisations. However, the simplicity of the proposed planar single-layer design has an additional feature when compared to the complexity of the reported structures.…”

Section: Single-layer Wide-angle Ultrathin Patch Absorber Design Implementationmentioning

confidence: 88%

Planar wide‐angle and polarisation‐insensitive ultrathin frequency selective surface patch absorber design analysis and implementation

Abdalla

Hammad

2021

IET Microwaves Antenna & Prop

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Single-layer ultrathin absorber patch elements are analysed under normal and oblique incidence. A compensation technique for impedance variation with an angle of incidence (θ) is proposed. An equivalent-circuit model is formulated that provides a realisation for the absorption response (in terms of resonance frequency and absorption ratio) of noncomplicated rectangular patch absorbers using simple equations. The design methodology proposed is based on using multiple subcells of simple patches to add another degree of freedom for the design equations and keep the ultrathin planar feature. Previously reported techniques realising a wide angle of incidence are applied for fair comparison with the proposed methodology. The developed structure features angular stability, polarisation insensitivity, and a planar non-complicated configuration compared with that of structures reported in literature. Moreover, a prototype is fabricated and measured to validate the proposed approach.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…From that point forward, various kinds of Single-Band [11][12][13][14][15] and Multiple-Band [16][17][18][19][20] MA contemplates were designed. Moreover, polarization-independent [21][22][23][24][25] and Tunable Perfect Metamaterial Absorbers (PMA) [26][27][28][29][30] were structured in the Gigahertz, Megahertz, and also in Terahertz. Mehmat et al [31] have proposed an Absorber which consists of a split ring resonator (SRR) and it has the perfect absorption between 4 and 16 GHz.…”

Section: Introductionmentioning

confidence: 99%

A Multiple-Bands Metamaterial Absorber Based in X, Ku and K-Band

Zafar

Masud

2021

Preprint

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Developing a highly efficient and multiple-bands metamaterial absorber is a hot issue in recent era. In this paper, A multiple-bands metamaterial absorber has been presented which is based in X, Ku and K-band. Firstly, we have designed two single layer basic unit cell of X-shape and cross-shape, then they are arranged in the multi-layers structure form for the purpose of obtaining multiple- bands and wide band absorption. The proposed absorber is able to work in multiple bands because it has six peaks in the frequency range of 8–24 GHz with having near perfect absorption. Moreover, the sixth peak has a wideband absorption which is 2.93 GHz. Furthermore, the proposed absorber is also tested for polarization insensitivity and also for oblique incidence. Absorption was found polarization insensitive with almost perfect absorption.

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Design and analysis of polarization independent conformal wideband metamaterial absorber using resistor loaded sector shaped resonators

Cited by 79 publications

References 34 publications

Design of an Ultra-thin Hepta-band Metamaterial Absorber for Sensing Applications

Design of an Ultra-thin Hepta-band Metamaterial Absorber for Sensing Applications

Planar wide‐angle and polarisation‐insensitive ultrathin frequency selective surface patch absorber design analysis and implementation

A Multiple-Bands Metamaterial Absorber Based in X, Ku and K-Band

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