Design and Characterization of an Ultrabroadband Metamaterial Microwave Absorber

Wang, Xin; Zhang, Binzhen; Wang, Wanjun; Wang, Junlin; Duan, Junping

doi:10.1109/jphot.2017.2700056

Cited by 36 publications

(21 citation statements)

References 40 publications

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“…Herein, Z is the characteristic impedance of the metamaterial absorber. The perfect absorption corresponding to the perfect impedance matching is obtained when the relative permittivity has the same magnitude with the relative permeability, which is dependent on the coexistence of the strong electric resonance and magnetic resonance [17]. As shown in Table 2, in comparison with the existing metamaterial absorbers, the proposed DSRA is comparatively the most miniaturized and ultrathin under highest absorption ratio.…”

Section: B Analysis Of Absorption Mechanismmentioning

confidence: 91%

Miniaturized Polarization Insensitive Metamaterial Absorber Applied on EMI Suppression

Zuo

Wang

et al. 2020

IEEE Access

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This paper presents the analysis and design of a miniaturized polarization insensitive metamaterial absorber (MMA) for suppression of the electromagnetic interference (EMI) at microwave frequency range. The proposed MMA consists of a periodic array of double split ring structures printed on an FR4 substrate with a thickness of 0.07 λ 0. The simulated results derived from CST indicate that the absorption ratio of the MMA is over 90% with a wide frequency range from 8.3 GHz to 11.3 GHz for a normal incident electromagnetic (EM) wave. To understand the EM wave absorption mechanism, an equivalent circuit model of the MMA unit cell is constructed to investigate the absorbing characteristics, and the electric field and surface current distributions are analyzed at absorption peaks.. Both equivalent circuit model (ECM) and measured results show good agreement. What's more, the measurement data shows that the radiated electric field of the patch antenna at 1 meter is significantly reduced at 10 GHz while loading with the MMA. A maximum suppression of 18 dBµV/m is achieved at 10 GHz. As the proposed absorber possesses good ability on electromagnetic radiation absorption, it could be well applied on printed circuit board (PCB) level EMI suppression.

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Section: B Analysis Of Absorption Mechanismmentioning

confidence: 91%

Miniaturized Polarization Insensitive Metamaterial Absorber Applied on EMI Suppression

Zuo

Wang

et al. 2020

IEEE Access

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“…There has been an in-creased interest in static metasurface, which shows great potential wavefront shaping applications 64,65 . Stealth technologies using microwave absorbers demand complex modelling capabilities to accurately capture material behaviours under different conditions 66 . Tools used to predict the scattered fields and compute RCS of complex structures require multiscale modelling capabilities.…”

Section: Current Defence Applicationmentioning

confidence: 99%

Recent Trends in Computational Electromagnetics for Defence Applications

Sankaran¹

2019

Def. Sc. Jl.

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Innovations in material science, (nano) fabrication techniques, and availability of fast computers are rapidly changing the way we design and develop modern defence applications. When we want to reduce R&D and the related trial-and-error costs, virtual modelling and prototyping tools are valuable assets for design engineers. Some of the recent trends in computational electromagnetics are presented highlight the challenges and opportunities . Why researchers should equip themselves with the state-of-the-art tools with multiphysics and multiscale capabilities to design and develop modern defence applications are discussed.

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“…However, the bandwidths of these absorbers are still narrow [11,23,24]. Some works were done with a very small size of unit cells, but they compromised the bandwidth [25][26][27]. Many researchers are working in this particular field to design a perfect MM absorber with broad band and polarization-insensitive features [28] to employ in stealth and radar systems.…”

Section: Introductionmentioning

confidence: 99%

Design of a Novel Double Negative Metamaterial Absorber Atom for Ku and K Band Applications

et al. 2019

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This paper presents a multiband metamaterial (MM) absorber based on a novel spiral resonator with continuous, dual, and opposite P-shape. The full wave analysis shows 80.06% to 99.95% absorption at frequencies range for Ku and K bands for several substrate materials of 100 mm2 area. The results indicate that the absorption rate remains similar for different polarizing angles in TEM mode with different substrates. With FR4 (Flame Retardant 4) substrate and 64 mm2 ground plane, the design acts as single negative (SNG) MM absorber in K band resonance frequencies (19.75–21.37 GHz) and acts as double negative (DNG) absorber in Ku band resonance frequencies (15.28–17.07 GHz). However, for Rogers 3035 substrate and 36 mm2 ground plane, it acts as an SNG absorber for Ku band resonance frequency 14.64 GHz with 83.25% absorption and as a DNG absorber for K band frequencies (18.24–16.15 GHz) with 83.69% to 94.43% absorption. With Rogers 4300 substrate and 36 mm2 ground plane, it acts as an SNG absorber for Ku band at 15.04 GHz with 89.77% absorption and as DNG absorber for K band frequencies (22.17–26.88 GHz) with 92.87% to 93.72% absorption. The design was fabricated with all three substrates and showed quite similar results as simulation. In comparison with other broadband absorbers, this proposed MM absorber illustrated broad incidence angles in TEM mode.

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Design and Characterization of an Ultrabroadband Metamaterial Microwave Absorber

Cited by 36 publications

References 40 publications

Miniaturized Polarization Insensitive Metamaterial Absorber Applied on EMI Suppression

Miniaturized Polarization Insensitive Metamaterial Absorber Applied on EMI Suppression

Recent Trends in Computational Electromagnetics for Defence Applications

Design of a Novel Double Negative Metamaterial Absorber Atom for Ku and K Band Applications

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