3D rampart-based dual-band metamaterial absorber with wide-incident-angle stability

Deng, Guangsheng; Sun, Huiming; Lv, Kun; Yang, Jun; Yin, Zhiping; Liu, Ying; Chi, Baihong

doi:10.35848/1882-0786/abd9ff

Cited by 18 publications

(5 citation statements)

References 27 publications

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“…Recently, three-dimensional (3D) printing technology is usually used in MMA fabrication, but it is not suitable for the manufacture of flexible absorbers due to the bad mechanical flexibility of the 3D structure. [5,6] Fortunately, more additive manufacturing methods such as template printing and spraying can be used for the manufacture of flexible MMA. Especially, using screen-printing technology, single-layer or multi-layer absorbers can be fabricated on different flexible substrates, such as polyethylene terephthalate (PET), polydimethylsiloxane (PDMS), polyimide (PI), and so forth.…”

Section: Introductionmentioning

confidence: 99%

A flexible ultra-broadband metamaterial absorber working on whole K-bands with polarization-insensitive and wide-angle stability

Wang¹,

He²,

Ding³

et al. 2022

Chinese Phys. B

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For potential military applications, a flexible metamaterial absorber (MMA) working on whole K-bands with total-thickness of 3.367 mm, ultra-broadband, polarization-insensitive, and wide-angle stability is presented based on frequency-selective surface (FSS). The absorber is composed of polyvinyl chloride (PVC) layer, polyimide (PI) layer, and poly tetra fluoro ethylene (PTFE) layer, with a sandwich structure of PVC–PI–PTFE–metal plate. Periodic conductive patterns play a crucial role in the absorber, and in traditional, it is designed on the upper surface of PI layer to form LC resonance. Different from commonly absorber, all the patterns are located on the lower surface of the PI layer in this work, and hence the impedance matching and absorptivity are improved in this purposed absorber. The flexible absorber with patterns on lower surface of the PI layer is compared with that on upper surface of the PI layer, the difference and the reasons are explained by absorption mechanism based on equivalent circuit model, and surface current density and electric field distribution are used to analyze resonance peaks. Absorptivity is greater than 90% in a frequency range of 10.47 GHz–45.44 GHz with relative bandwidth of 125.1%, covering the whole Ku, K, Ka, and some of X, U bands, especially containing the whole K bands from 12 GHz to 40 GHz. Radar cross section (RCS) is reduced at least 10 dB in 11.48 GHz–43.87 GHz frequency ranges, and absorption remained about 90% when the incident angle changed from 0 ° to 55°. The purposed absorber is fabricated, measured, and experiment results show good agreement with theoretical analysis and numerical simulation. After bonded on outer surface of different cylinders with diameters of 200 mm and 100 mm, the absorption of MMA is approximately reduced 10% and 20% respectively, which shows good conformal character with surface of various curvatures. Due to the attractive performance on strong absorption in the whole K-bands, flexible and easy conformal, our design exhibits broad potential application in radar stealth and sensors.

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Section: Introductionmentioning

confidence: 99%

A flexible ultra-broadband metamaterial absorber working on whole K-bands with polarization-insensitive and wide-angle stability

Wang¹,

He²,

Ding³

et al. 2022

Chinese Phys. B

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“…For some scenarios that need to shield frequency signals inside multiple operating frequency bands, dual-band absorbers have drawn increased attention [15][16][17][18][19][20][21][22]. Two perfect absorption peaks at 16.6 GHz and 24.4 GHz were obtained by using rotated symmetrical quad-petal structure [18].…”

Section: Introductionmentioning

confidence: 99%

Dual-band absorber using low-profile multi-mode resonant units for controllable bandwidths

Huang¹,

Wu²,

Deng³

et al. 2022

J. Phys. D: Appl. Phys.

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A dual-band quasi-single-layer absorber based on multimode resonance is proposed. Different from the traditional multi-substrate or multi-resonator composite structure, by virtue of stub- and slot-loaded technologies, only one single-substrate printed resonator is utilized to achieve multi-mode resonant characteristics for two absorption bands. The bandwidth of the two absorption bands can be adjusted by structural parameters. Through the detailed analysis of the surface current distribution in different modes, the generation principle of the multi-mode dual-band characteristic is revealed. Finally, the dual-band absorber is fabricated and measured, achieving dual-band absorptions in the frequency range of 7.64–10.8 GHz and 15.04–17.32 GHz with fractional bandwidth (FBW) of 34.3% and 14.1%, respectively. The advantages of low-profile simple structure and controlled dual bandwidth make it very suitable for radar detection and stealth fields.

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“…polarization converters [22] super-lenses [23,24], bolometers [25,26], invisibility cloaks [27][28][29], perfect absorbers/reflectors [30][31][32][33], and military applications [34]. In particular, the so-called metamaterial perfect absorbers (MPAs) have been developed intensively for optoelectronic applications such as stealth technology [35,36], thermal emission [37][38][39], spatial light modulation [40], THz identification tags [41], sensing [42,43] and thermal imaging [44], since the first smallsized MPAs by Landy et al [30].…”

Section: Introductionmentioning

confidence: 99%

Ultrathin hybrid absorber based on high-order metamaterial

Ha¹,

Hanh²,

Tung³

et al. 2021

J. Opt.

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In this work, we utilized a hybrid resonator to achieve near-perfect and dual-band absorption in the VHF and the LTE/Bluetooth/WiMAX bands. An electromagnetic (EM) wave at an oblique incidence was captured efficiently by exciting the fundamental magnetic resonances at 106 and 123.4 MHz. In particular, the effective thickness of the metamaterial perfect absorber (in comparison with the working wavelength ) is miniaturized to be at the high-order resonances (induced in the 2.0–4.0 GHz range) at a specific incident angle of EM wave, = 45°, 30°, 15° and = 5°. Our results contribute to the realization of meta-devices, such as sensors, optical filters/switchers, photodetectors, and energy converters, for future applications in the radio to the microwave frequency bands.

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3D rampart-based dual-band metamaterial absorber with wide-incident-angle stability

Cited by 18 publications

References 27 publications

A flexible ultra-broadband metamaterial absorber working on whole K-bands with polarization-insensitive and wide-angle stability

A flexible ultra-broadband metamaterial absorber working on whole K-bands with polarization-insensitive and wide-angle stability

Dual-band absorber using low-profile multi-mode resonant units for controllable bandwidths

Ultrathin hybrid absorber based on high-order metamaterial

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