Design and Development of a Hybrid Broadband Radar Absorber Using Metamaterial and Graphene

Winson, Delme; Choudhury, Balamati; Selvakumar, N.; Barshilia, Harish C.; Nair, Raveendranath U.

doi:10.1109/tap.2019.2907384

Cited by 29 publications

(15 citation statements)

References 18 publications

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“…For example, one can adjust the equivalent impedance of the structure and reduce the reflection. Together with the ability of graphene to absorb the electromagnetic field it becomes very promising element of absorbers [5,6,7]. The use of graphene for sensing application is also possible [8,9,10].…”

Section: Introductionmentioning

confidence: 99%

Singular Integral Equations in Scattering of Planar Dielectric Waveguide Eigenwaves by the System of Graphene Strips at THz

2021

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Section: Introductionmentioning

confidence: 99%

Singular Integral Equations in Scattering of Planar Dielectric Waveguide Eigenwaves by the System of Graphene Strips at THz

2021

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“…As a consequence, the incident EM wave through the absorber will suffer from the negative value of the refractive index [2]; which traps the incident EM wave inside the absorber. A lot of work is underway to develop perfect MM absorbers to perform for different applications like absorber integrated with antennae for noise reduction [3], remote sensing applications [4], microwave imaging [5], stealth technologies especially for military vehicles [6], reducing radar cross-sections [7,8], invisibility cloaking [9] and SAR reduction [10,11]. Generally, a specially designed precise patch or an array of patches on one side of a dielectric substrate and a ground of the same material of the patch set at the other side of the substrate is used for MM absorber design [12].…”

Section: Introductionmentioning

confidence: 99%

Modified-Segmented Split-Ring Based Polarization and Angle-Insensitive Multi-Band Metamaterial Absorber for X, Ku and K Band Applications

et al. 2020

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A novel modified-segmented split-ring based symmetric metamaterial absorber is introduced in this paper for X, Ku, and K band applications. The perfect absorption was achieved with a total of 1.91 GHz absorption bandwidth using the conventional FR4 substrate without resistive lumped elements. EM waves were applied in TEM mode at both normal and oblique incidence up to 90° and the same absorptance was found at 11.23 GHz, 14.18 GHz, 17.37 GHz, and 19.18 GHz with the maximum of 85.51%, 99.13%, 98.19%, and 90.8% absorptance respectively. This absorption performance was proved for both co-and crosspolarization analysis. Double negative values of permittivity and permeability up to 17.37 GHz and single negative values of either permittivity or permeability at 19.18 GHz were achieved. An equivalent circuit analysis also proved its performance capability, which makes it a perfect metamaterial absorber. Finally, the comparison of the design with recently published works in terms of unit cell size, absorption band, maximum polarization angles, and cross-polarized absorptivity proved it as a better candidate for the potential use as a perfect absorber. INDEX TERMS Wideband, metamaterial absorber, modified segmented split-ring, X Ku and K band, triple band.

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“…4 –6 Due to the artificial surface-based EM absorber has the advantages of flexible design 7,8 and adjustable response, various structures have been designed. Besides, absorbers based on artificial surfaces can achieve ultra-wide bandwidth 9 –11 and extremely narrow bandwidth 12 through a well-designed structure, which has been widely used in stealth materials, 13,14 FSSs, 15 terahertz imaging, 16 intelligent communications, 17 photoelectric detection, 18 energy harvesting, 19 and other fields.…”

Section: Introductionmentioning

confidence: 99%

Wideband absorber based on conductive ink frequency selective surface with polarization insensitivity and wide-incident-angle stability

Deng

Sun

et al. 2020

Nanomaterials and Nanotechnology

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In this article, a wideband, polarization-insensitive, and wide-incident-angle stable absorber based on conductive ink frequency selective surface is presented. The presented absorber is compatible with screen printing technology. The design and absorption principle of the proposed absorber is presented, and simulation analysis is conducted. The simulation results show that in the frequency range 6.58–16.38 GHz, the absorptivity of the proposed absorber is greater than 90%, while the relative absorption bandwidth is 85.4%. The whole absorber structure is relatively thin, having a total thickness of 3.3 mm, corresponding to 0.126λ0 at its center frequency. In addition, for both transverse electric and transverse magnetic incident waves, the proposed absorber achieves the absorptivity of more than 80% at the incident angle of up to 45°. A prototype of the proposed absorber is fabricated and used in experimental verification. The obtained experimental results show a good agreement with the numerical simulations. This absorber has great potential applications in the field of microwave sensing and absorbing.

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Design and Development of a Hybrid Broadband Radar Absorber Using Metamaterial and Graphene

Cited by 29 publications

References 18 publications

Singular Integral Equations in Scattering of Planar Dielectric Waveguide Eigenwaves by the System of Graphene Strips at THz

Singular Integral Equations in Scattering of Planar Dielectric Waveguide Eigenwaves by the System of Graphene Strips at THz

Modified-Segmented Split-Ring Based Polarization and Angle-Insensitive Multi-Band Metamaterial Absorber for X, Ku and K Band Applications

Wideband absorber based on conductive ink frequency selective surface with polarization insensitivity and wide-incident-angle stability

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