A highly efficient low-profile tetra-band metasurface absorber for X, Ku, and K band applications

Murtaza, Mudassir; Wakeel, Abdul; Anjum, Saiqa

doi:10.1016/j.aeue.2022.154329

Cited by 14 publications

(5 citation statements)

References 36 publications

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“…Each meta-atom is a N r ×N r array of pixels, some patched with graphene and the others unpatched. In contrast to numerous designs [14,15], the patches are not metallic. The pixels are arranged on a PVC skin which is placed on top of a copper-backed YIG substrate.…”

Section: Introductionmentioning

confidence: 97%

Design of X-Band Bicontrollable Metasurface Absorber Comprising Graphene Pixels on Copper-Backed YIG Substrate

Sharma¹,

Lakhtakia²,

Jain³

2022

Preprint

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The planewave response of a bicontrollable metasurface absorber with graphene-patched pixels was simulated in the X band using commercial software. Each square meta-atom is a 4×4 array of 16 pixels, some patched with graphene and the others unpatched. The pixels are arranged on a PVC skin which is placed on a copper-backed YIG substrate. Graphene provides electrostatic controllability and YIG provides magnetostatic controllability. Our design delivers absorptance ≥ 0.9 over a 100-MHz spectral regime in the X band, with 360 MHz kA −1 m magnetostatic controllabity rate and 1 MHz V −1 µm electrostatic controllability rate. Notably, electrostatic control via graphene in the GHz range is novel.

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Section: Introductionmentioning

confidence: 97%

Design of X-Band Bicontrollable Metasurface Absorber Comprising Graphene Pixels on Copper-Backed YIG Substrate

Sharma¹,

Lakhtakia²,

Jain³

2022

Preprint

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“…RCS is a serious issue in military applications since stealth technology makes it difficult to be detected. However, other more techniques, including frequency selective surfaces, metamaterial absorbers, electromagnetic band gaps (EBG), etc., have been proposed in the literature to reduce RCS [1][2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Size militarization to be achieved by CMA principle and only one mode is excited in entire absorption range in TE/TM mode. Adnan Yousuf [4] suggested a low-profile tetra-band metasurface absorber for X, Ku and K-band application with polarization and angular stability up to 90 o and 70 o . This metasurface having Split-Ring Resonator (SRR) consisting outer shaped ring with four rings and vector symmetric star-shaped design fabricated on FR-4 substrate.…”

Section: Introductionmentioning

confidence: 99%

“…This absorber is designed by two-layer, first layer is formed by polymethyle pentene and second layer is made by indium tin oxide with 90% absorption bandwidth 2.53-8.94GHz and wide angular stability from 0-60 o . Shreyas Charola, et.al [8] and [9] suggest to designing a wideband metasurface absorber covered visible to ultraviolet (UV) region i.e. 340THz-1140THz.…”

Section: Introductionmentioning

confidence: 99%

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Metasurface Instrumented High Gain and Low RCS X-Band Circularly Polarized MIMO Antenna for IoT Over Satellite Application

Saxena¹,

Kumar²,

Chintakindi³

et al. 2023

Preprint

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In this article, an X-band metasurface is designed and this metasurface array is used as an instrument to increase gain & reduce radar cross section of circularly polarized X-band MIMO antenna through super-state and under-state positioning of array respectively. Absorbance of the metasurface to the intended frequency band (i.e., 6.75GHz-14.0GHz) is more than 90.0%. Metasurface is designed on FR-4 substrate height (Hs) 3.1mm with unit cell dimension of 7.95×7.95×3.1mm3 (0.265λo×0.265λo×0.103λo) at 10GHz. The proposed antenna is also designed on FR-4 substrate with dimensions of 29×23×1.6mm3 (0.966λo×0.766λo×0.0.053λo) at 10GHz. The super-state and under-state positioning of metasurface array over MIMO antenna is increased the gain (peak gain 12.6dBi at 11GHz) and reduced the mono-static RCS (18dBm2) across the band respectively. The characteristic of the antenna is likewise verified by its s-parameters, radiating efficiency, gain and diversity parameters for the intended band. The simulated & measured results are having better harmony which exhibits suitability of the proposed designs for IoT over satellite, military application, and also useful to identify blood clouting in CT-scan application.

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“…Over the past few decades, MSs have gained considerable attention due to their numerous promising applications, such as in flat metalenses [2,3], imaging [4], filters [5,6], wavefront manipulating devices [7][8][9][10], detectors [11], sensors [12], polarization convertors [13][14][15], and absorbers [16,17]. In particular, since the invention of the concept of a perfect absorber based on MMs by Landy [16], numerous metasurface absorbers (MSAs) have been proposed and implemented for the microwave, THz, and even for the visible frequency regions [17][18][19][20][21][22][23][24][25][26]. MSAs are generally classified as broadband or narrowband types based on different application requirements.…”

Section: Introductionmentioning

confidence: 99%

Ultrathin Narrowband and Bidirectional Perfect Metasurface Absorber

Li,

Chen,

et al. 2023

Coatings

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The conventional design approaches for achieving perfect absorption of electromagnetic (EM) waves using metasurface absorbers (MSAs) are limited to absorbing waves in one direction while reflecting waves in the other. In this study, a novel ultrathin narrowband MSA with bidirectional perfect absorption properties has been proposed, based on a tri-layer metal square-circular-square patch (SCSP) structure. The simulation results demonstrate that the proposed MSA exhibits a remarkable absorbance of 98.1%, which is consistent with the experimental and theoretical calculations. The equivalent constitutive parameters that were retrieved, as well as the simulated surface current and the power loss density distributions, reveal that the perfect absorption of the designed MSA originates from the fundamental dipolar resonance. Furthermore, the proposed MSA demonstrates stable wide-angle absorption properties for both transverse electric (TE) and transverse magnetic (TM) waves under various oblique incidence angles. The absorption characteristics of the MSA can be fine-tuned by adjusting the structural parameters. Additionally, the proposed MSA boasts excellent ultrathin thickness, bidirectional, polarization-insensitive, and wide-angle properties, making it highly suitable for a range of potential applications such as imaging, detection, and sensing.

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A highly efficient low-profile tetra-band metasurface absorber for X, Ku, and K band applications

Cited by 14 publications

References 36 publications

Design of X-Band Bicontrollable Metasurface Absorber Comprising Graphene Pixels on Copper-Backed YIG Substrate

Design of X-Band Bicontrollable Metasurface Absorber Comprising Graphene Pixels on Copper-Backed YIG Substrate

Metasurface Instrumented High Gain and Low RCS X-Band Circularly Polarized MIMO Antenna for IoT Over Satellite Application

Ultrathin Narrowband and Bidirectional Perfect Metasurface Absorber

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