Design and analysis of a compact ultrathin ultra‐wideband metamaterial absorber with near to unity absorption for
            <scp>Ku</scp>
            ‐band

Puri, Vishal; Singh, Hari Shankar

doi:10.1002/mmce.23069

Cited by 7 publications

(1 citation statement)

References 21 publications

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“…An L-shaped patch is combined with one consolidated patch for constructing the proposed absorber. The absorptivity is above 97% from 13.6 to 18.5 GHz with 4.9 GHz absorption bandwidth Puri and Singh (2022). A ladder shape absorber proposed with greater than 91% absorptivity from 21.2 GHz to 28.2 GHz with 7 GHz absorption bandwidth in Dewangan et al (2023).…”

Section: Introductionmentioning

confidence: 96%

Design of polarization insensitivity wideband metamaterial absorber using the resistor based square-shaped structure

Binda,

Mitharwal,

Singh

et al. 2023

Preprint

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In this paper, we have explored a compact wideband metamaterial absorber unit-cell structure comprises four square-shaped conducting patches of copper and connected with four lumped resistors supported by FR-4 as a substate material which followed by conducting ground plain in the microwave (4 GHz to 15GHz) regime of the spectrum. The proposed structure has been analysed and simulated using CST Studio Suite a commercial simulated based on finite integration techniques to yield several performance metrics for comprehensive understanding of broad-spectrum absorbers. The proposed wideband metamaterial absorber is polarization insensitive due to its symmetric structure under a normal incident angle and has potential applications for the radar cross-section (RCS) reduction, target stealth, and electromagnetic wave protection. Further, the proposed structure has been fabricated and tested experimentally, and the achieved results are comparable with that of the simulation results.

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Section: Introductionmentioning

confidence: 96%

Design of polarization insensitivity wideband metamaterial absorber using the resistor based square-shaped structure

Binda,

Mitharwal,

Singh

et al. 2023

Preprint

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Visible Transparent Wideband Microwave Meta‐Absorber with Designable Digital Infrared Camouflage

Cui,

Wang,

Sun

et al. 2023

Advanced Optical Materials

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Stealth performance plays an increasingly important role in the evaluation of aircraft performance, while achieving excellent stealth performance in multiple frequency bands simultaneously remains a crucial challenge. Herein, a visible transparent wideband microwave absorber with infrared camouflage function is theoretically presented and experimentally demonstrated. The sample is composed of two radar absorption layers (RALs) and an infrared shielding layer (IRSL). In addition, the magnetic resonance model and the ohmic loss model are employed to strengthen the absorption of the designed RALs >90% in a broadband frequency range of 7–23 GHz with a relative bandwidth of 106.7%, and an average visible transmittance of ≈60%. Furthermore, IRSL is achieved by a designable digital frequency selective surface (FSS), which promotes a compatible design between infrared camouflaged emissivity and microwave absorption. These peculiar properties not only verify the feasibility of the proposed strategy for achieving suitable artificially designed IR digital camouflage patterns to meet various thermal camouflage environments, but also have promising application prospects in multispectral stealth. The additional visible light transparent feature makes it useful in compatible camouflage‐stealth facilities when requiring observing and operating in optical windows.

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Broadband polarization insensitive metamaterial absorber

et al. 2023

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Ultrathin and broadband metamaterial absorber with loaded four lumped resistors is proposed and analyzed. The reported design is based on increasing the absorptivity by reducing the reflection and transmission coefficients simultaneously. Therefore, continuous metallic ground is used to achieve zero transmission while the reflection is reduced by matching the impedance of the proposed metamaterial absorber with the impedance of free space (Z = Z0 or μr = εr). Additionally, electric and magnetic resonances are achieved simultaneously with perfect absorptivity. The finite element method is used to simulate and analyze the reported absorber. The suggested absorber shows higher absorption than 90% over large frequency range (14.35–29.18 GHz) for both transverse electric and transverse magnetic polarizations. Further, the proposed design has high absorption through incident angle variation from 0° to 50°. Therefore, the reported perfect metamaterial absorber has good potential applications in communications, stealth and imaging fields.

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Design and analysis of a compact ultrathin ultra‐wideband metamaterial absorber with near to unity absorption for Ku ‐band

Cited by 7 publications

References 21 publications

Design of polarization insensitivity wideband metamaterial absorber using the resistor based square-shaped structure

Design of polarization insensitivity wideband metamaterial absorber using the resistor based square-shaped structure

Visible Transparent Wideband Microwave Meta‐Absorber with Designable Digital Infrared Camouflage

Broadband polarization insensitive metamaterial absorber

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