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

Deng, Guangsheng; Lv, Kun; Sun, Huiming; Hong, Yuan; Zhang, Xiaoxin; Yin, Zhiping; Yang, Jun

doi:10.1177/1847980420935718

Cited by 22 publications

(6 citation statements)

References 30 publications

(22 reference statements)

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“…Figures 5(e)-5(f) show electric field distribution of FSS layer at two resonance frequencies, i.e., 13.91 GHz and 37.63 GHz, it can be observed that the electric fields are mainly concentrated on the fringe of FSS layer, so the resonance is closely related to the side length of FSS layer. [22] It is well known that a resistive film is usually printed on the upper surface of the PI layer in traditional method, but resistive film on the top of an MMA may be cracked or mismatched when the PVC-PI-PTFE-metal plate structure is conformal to a curved surface. To avoid surface abrasion of the resistive film and to improve absorbing performance when the MMA is curved, as a development, resistive film is arranged on the lower surface of the PI herein, this is the most difference between this work and existed researches.…”

Section: Resultsmentioning

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: Resultsmentioning

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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“…4 Due to the superior characteristics, frequency-selective absorbers (FSAs) have received more attention. 5 Unlike conventional absorbers, FSA not only has one or more absorption bands but also has a passband [6][7][8][9] or stopband. [10][11][12][13] FSA with passbands can provide low insertion loss transmission and out-of-band wave absorption.…”

Section: Introductionmentioning

confidence: 99%

An ultra‐wideband polarization‐insensitive optically transparent band‐notched absorber

Zhu,

Wang,

Wang

et al. 2024

Micro & Optical Tech Letters

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In this paper, a polarization‐independent optical transparent absorber with a notch band has been designed, fabricated, and experimented. The proposed structure is composed of three layers made of indium tin oxide (ITO) films with different surface resistances separated by polydimethylsiloxane substrates, which can realize ultra‐wideband absorption. The absorber presents two discrete absorption bands in the frequency range of 3.65–28.82 and 37.72–43.69 GHz, and reflective behavior from 31 to 36.57 GHz. Compared with existing notched band absorbers, this proposed structure has obvious advantages such as structure stability, polarization insensitivity, simple structure, and ultra‐wide absorption bandwidth up to 155%. The prototype was fabricated and a reasonable agreement was obtained between the simulated and measured results.

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“…As an alternative, FSSs based on indium tin oxide (ITO) have been extensively studied due to their easy fabrication. ,, The use of these ITO-based FSSs for wideband EM wave absorption has been experimentally demonstrated. Another widely investigated resistive FSS is based on conductive ink, in which the FSS patterns are formed directly by inkjet printing using cheap ink.…”

Section: Introductionmentioning

confidence: 99%

Block Building Architecture for a Multifunctional Broadband Electromagnetic Wave Absorber Based on the Freestanding Resistive Film

Deng

Wang

Chi

et al. 2023

ACS Appl. Electron. Mater.

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As the critical component in the electromagnetic (EM) wave shielding and stealth technology, using broadband EM wave absorbers in harsh environments is still challenging in practical applications. In this letter, a novel way of realizing the broadband absorbers with a block building method is proposed to broaden their absorptivity to different application scenarios. In particular, the synthesis of the self-supported carbon nanotube–cellulose nanocrystal (CNT–CNC) film, which acts as a resistive layer, is independent of selecting substrates during fabrication and assembling. Therefore, replacing the substrates to meet different application requirements is easy. We experimentally demonstrate the application of a block building method in realizing a high temperature-resistant and self-repairing EM wave absorber by combining the CNT–CNC film with ceramics and supramolecular thermoplastic urethane substrates, respectively. Moreover, the CNT–CNC film is compatible with laser etching and further offers a convenient way of tuning the absorption frequency after incorporating frequency-selective surface design. The proposed block building method offers insights into designing multifunctional absorbers.

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

Cited by 22 publications

References 30 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

An ultra‐wideband polarization‐insensitive optically transparent band‐notched absorber

Block Building Architecture for a Multifunctional Broadband Electromagnetic Wave Absorber Based on the Freestanding Resistive Film

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