Analysis and Design of Stopband FSS Unit Cell on Textile Substrates

Naseer, Noaman; Gökcen, Dinçer; Saka, Birsen

doi:10.1109/lemcpa.2020.3031985

Cited by 8 publications

(6 citation statements)

References 12 publications

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“…It is observed that there is some difference between simulated and measured resonance frequency. This shift was also observed in [29] for designs fabricated with copper tape and conductive textile. This shift in resonance frequency is due to the assumption of the smooth substrate in the simulation, whereas in reality, the jeans substrate is a porous and rough material.…”

Section: Measurement Results and Discussionsupporting

confidence: 66%

“…This article presents a stopband polarizationdependent FSS for X-band frequencies, which has potential applications in EM shielding, RCS reduction, and antenna radome. This work is the continuation of our research presented in [29]. In that work, a stopband FSS unit cell was designed for X-band frequency.…”

Section: Introductionmentioning

confidence: 89%

“…In [29] the element level analysis is presented where an infinite array environment is considered but in a real scenario, finite arrays are used which are subjected to edge diffraction. The edge diffraction can cause severe performance degradation in an array with small sizes so it is important to compare unit cell results with the fabricated finite array.…”

Section: Fss Array Design and Fabricationmentioning

confidence: 99%

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An electromagnetic shield design using frequency selective surfaces on a textile substrate

Naseer¹,

Saka²

2022

Flex. Print. Electron.

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In this paper, a flexible bandstop frequency selective surface (FSS) array fabricated on jeans substrate using silver-coated conductive yarn with a computerized embroidery machine is presented for X-band. The S parameters of the fabricated design are measured through the free space method. The measured S-parameters showed significant stopband characteristics between 8 GHz-11.5 GHz for -30o to 30o degrees wide incident angles. Moreover, the transmission, reflection, absorption, and shielding effectiveness (SE) of the FSS array are also computed using measured S parameters. The prototype provides shielding effectiveness of more than 30 dB in X-band and has dominant absorption behavior for some frequencies within the band.

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Section: Measurement Results and Discussionsupporting

confidence: 66%

Section: Introductionmentioning

confidence: 89%

Section: Fss Array Design and Fabricationmentioning

confidence: 99%

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An electromagnetic shield design using frequency selective surfaces on a textile substrate

Naseer¹,

Saka²

2022

Flex. Print. Electron.

Self Cite

View full text Add to dashboard Cite

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“…Spatial filters using the FSS are one of the techniques to mitigate the effects of such electromagnetic radiations. The design of a dual‐band conformal FSS based on textiles for electromagnetic wave filtering is discussed by Bilal et al 2 A rectangular unit cell with a slot fabricated on a Tyvek and denim substrate to block undesirable X‐band frequencies is reported in Naseer et al 3 For applications demanding indoor radar clearness, wearable metamaterial microwave absorber is emphasized in Tak and Choi 4 with twin resonances at 9 and 9.8 GHz. In Tahseen and Kishk, 5 an FSS‐based center‐fed C‐band portable and rollable textile reflect array is presented.…”

Section: Introductionmentioning

confidence: 99%

Design of polycarbonate‐based dual‐band conformal frequency‐selective surface for 4G/5G shielding applications

Manokaran,

Sivasamy,

Harish Muthukaruppan

et al. 2024

Micro & Optical Tech Letters

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In this work, a compact conformal swastik frequency‐selective surface (FSS) has been proposed for shielding 4G/5G signals. The resonating unit of FSS is realized using swastik geometry. The proposed FSS offers resonance at 1800 MHz for 4G band and 3300 MHz for sub‐6 5G band. The unit‐cell dimension is 0.11λ0 × 0.11λ0, where λ0 is the free space wavelength corresponding to the lowest resonating frequency. The proposed FSS provides a stable response for both the TE and TM modes of polarization up to 60°. To validate the simulated results, the FSS was fabricated and tested. The simulation and measurement results are in good agreement.

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“…Te FSS with a large unit cell size exhibiting band-stop characteristics is given in [23]. Te FSS unit cells given in [24][25][26][27][28] were designed using a complex design using a multi-layer confguration, which is not a costefective solution.…”

Section: Introductionmentioning

confidence: 99%

A Novel Ultra-Miniaturized Angularly Stable Frequency Selective Surface for L-Band Shielding Applications

Kanagasabai,

Ramadoss,

Viswanathan

et al. 2024

International Journal of Antennas and Propagation

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This paper presents a novel ultraminiaturized frequency selective surface (FSS) for L-band electromagnetic shielding applications. A basic square loop incorporated with folded arms in the top layer constructs the single-layer FSS design. Band-stop characteristics for the entire L-band operating frequency ranging from 1 GHz to 2 GHz are offered by the proposed design. An ultraminiaturized profile of 0.028λο × 0.028λο is achieved by the designed FSS, where λο corresponds to the lowest operating frequency, achieving at least 32.1% miniaturization when compared to the state-of-the-art FSS designs in the literature. Polarization insensitivity with a peak shielding effectiveness of 45.4 dB is manifested by the rotational symmetry of the proposed design. The proposed FSS exhibits excellent angular stability performance up to 80° with a frequency deviation of less than 1%. The equivalent circuit model helps to understand the working principle of the proposed FSS. The experimental results of the designed FSS prototype agree well with the simulation results. Hence, the proposed spatial filter is a suitable candidate for enhancing security in wireless communication at the carrier frequencies of GPS systems.

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Analysis and Design of Stopband FSS Unit Cell on Textile Substrates

Cited by 8 publications

References 12 publications

An electromagnetic shield design using frequency selective surfaces on a textile substrate

An electromagnetic shield design using frequency selective surfaces on a textile substrate

Design of polycarbonate‐based dual‐band conformal frequency‐selective surface for 4G/5G shielding applications

A Novel Ultra-Miniaturized Angularly Stable Frequency Selective Surface for L-Band Shielding Applications

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