Compact Ultra-Wide Band Frequency Selective Surface With High Selectivity

Hong, Tao; Wang, Mengdan; Peng, Ke; Zhao, Qiang; Gong, Shuxi

doi:10.1109/tap.2020.2963905

Cited by 27 publications

(14 citation statements)

References 16 publications

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“…As shown in Figure 6, when the incident angle goes up to 45°, the response under TE polarization of the proposed FSS is still stable, but it is a bit worse under TM polarization. This situation also occurs in some structures that use air layers [20] [21].…”

Section: Table I I Electrical Parameters Of the Proposed Fssmentioning

confidence: 97%

A Novel Miniaturized Ultra-Wideband Frequency Selective Surface With Rapid Band Edge

Ahmed

et al. 2021

IEEE Access

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This paper presents a novel frequency selective surface (FSS) structure with miniaturized, rapid band edge, ultra-wideband passband, and ultra-wideband out of band shielding. The proposed FSS is formed by using two air foam layers to cascade three single layers with the unit cell dimension in 6mm×6mm(0.0234λ×0.0234λ). The corresponding equivalent circuit models are developed for interpretation on the physical mechanism and formulate the relevant design equations. Finally, a prototype of the proposed structure is fabricated and measured to verify the full-wave simulation, and theoretical analysis results. The measured results show the proposed FSS has a -3 dB passband from 1.17 GHz to 7.08 GHz and a -10 dB stopband from 7.34 GHz to 15.0 GHz. The calculated relative bandwidth is 143.3% and 68.6%, respectively, which exhibits the stable performance against the variation of the incident angles from 0° to 45° for both TE and TM polarizations. All these results demonstrate that the proposed FSS is suitable for the actual miniaturized EMI shielding scene application.INDEX TERMS Frequency selective surface (FSS), ultra-wideband (UWB), miniaturization, rapid band edge

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Section: Table I I Electrical Parameters Of the Proposed Fssmentioning

confidence: 97%

A Novel Miniaturized Ultra-Wideband Frequency Selective Surface With Rapid Band Edge

Ahmed

et al. 2021

IEEE Access

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“…The miniaturization in dimension and size of unit cell has been achieved by selecting MSLFSS and circular-loop elements and employing them on the top and bottom surfaces of the substrate. The size of UWB FSS is reduced about 82.77%, 90.31%, 57.76%, 41.30%, 75.19%, 84.34%, 81.24%, 61.24%, 88.97%, 76.69%, 75.19%, 49.38% and 31.11% in comparison to [20][21][22][23]27,[39][40][41][42][43][44][45][46], respectively. Stability of UWB has been investigated and ensured for TE and TM modes up to 85 • by reducing the gap up to λ/8 between the adjacent elements and verified through simulated and experimental results.…”

Section: Performance Analysis Of Uwb Fssmentioning

confidence: 97%

“…To achieve the flatness in the transmission curve, dielectric slab of RO3210 was placed between the square loop and circular-loop elements as recommended in [10]. The periodicity of FSS unit cell along x-axis and y-axis is 0.12 λ at f c which is 2.44, 3.21, 1.5, 1.3, 2, 2.81, 2.3, 1.6, 3.01, 2.07, 2.27, 1.40 and 1.20 times smaller than the periodicity presented in [20][21][22][23]27,[39][40][41][42][43][44][45][46], respectively. At 7.5 GHz density of RO3210 is λ/31 which is lesser than λ/4 as established in [21] for multilayer FSS.…”

Section: Performance Analysis Of Uwb Fssmentioning

confidence: 99%

“…In Refs. [20][21][22][23]27,28,[39][40][41][42][43][44][45][46]] BWs of 7.5, 8, 4, 4, 2.41, 1.63, 9, 7.53, 10.75, 3.64, 6.11, 10.2, 0.6 and 9.9 GHz with -10 dB attenuations having FBW of 73.17%, 116%, 48%, 48%, 28.57%, 16.35%, 98.68%, 101.53%, 136.42%, 67.9%, 121.59%, 124.39%, 50% and 120%, respectively have been achieved. However, these BWs and FBWs were achieved by compromising on SE, dimensions, thickness, angular as well as polarization stability, as depicted in Tab.…”

Section: Performance Analysis Of Uwb Fssmentioning

confidence: 99%

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Ultra-wideband Frequency Selective Surface for Communication Applications

Habib¹,

Kiani²,

Butt³

et al. 2022

Computers, Materials &Amp; Continua

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A low-profile ultra-wideband (UWB) band-stop frequency selective surface (FSS) is designed for S-, C-, X-and Ku-bands communication applications. The FSS is constructed by using square and circular loop elements printed on the top and bottom sides of the RO3210 substrate. The FSS has been designed to reduce the electromagnetic interference (EMI) as well as to mitigate the harmful effects of electromagnetic radiation on the human body caused by different radio devices. The dimension and size of the UWB FSS have been reduced to 0.12 λ× 0.12 λ and 90%, respectively, as compared to the reported literature. The other advantages of the proposed FSS are that it is low profile, it has a simplified geometry and it ensures better angular and polarization stability of up to 85 • . The -10 and -20 dB bandwidths of the proposed FSS are 146% (2.0-13.0 GHz) and 80% (4.87-11.42 GHz), respectively. Theoretical results have been obtained using ANSYS HFSS and verified through measured results.

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“…One double metallic layer related to tortuous has also been discussed in [6] where triangular spiral metallic FSS were cascaded with gridded tortuous to achieve triple passband with closer pole and zero separation. In [7], a cross grid structure has been proposed and investigated which would exhibit excellent passband selectivity. The convolution of metallic meandered pattern in each quadrant of the unit cell of single-layered FSS has been introduced in ref.…”

Section: Introductionmentioning

confidence: 99%

Compact, flexible and highly selective wideband complementary FSS with high angular stability

Coomar

Mondal

Sanyal

2021

Int. J. Microw. Wireless Technol.

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This article presents a novel miniaturized (0.105λ0 × 0.105λ0) flexible complementary frequency selective surfaces (CFSS) structure with sharp band edge selectivity and very high angular stability. To explore two diverse applications as a passband and stopband filter, a novel complementary convoluted square loop (CCSL) type structure has been designed and investigated on ultrathin dielectric material of thickness 0.0023λ0. The second-order wide controllable passband with fractional bandwidth of 19.23% (−3 dB) and remarkably wide stopband of 64.7% (−10 dB) and 54.8% (−20 dB) respectively have been achieved by using a cascaded resonating structure which is composed of asymmetrical meandered CCSL array, arranged on two ultrathin dielectric layers with air foam separation. This particular format would lead to sharp band edge selectivity with steep roll-off (72.43 dB/GHz) and an excellent passband selectivity factor (0.731). An equivalent lumped LC circuit in conjunction with the transmission line model has also been adopted to comprehend the physical mechanism of the proposed single layer and double layer structures. Further, better passband and stopband angular stability at an oblique incident angle of 45° and the bending characteristics have also been investigated thoroughly for the proposed flexible CFSS to check their employability in different conformal structures with WiMAX passband and WLAN stopband application.

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Compact Ultra-Wide Band Frequency Selective Surface With High Selectivity

Cited by 27 publications

References 16 publications

A Novel Miniaturized Ultra-Wideband Frequency Selective Surface With Rapid Band Edge

A Novel Miniaturized Ultra-Wideband Frequency Selective Surface With Rapid Band Edge

Ultra-wideband Frequency Selective Surface for Communication Applications

Compact, flexible and highly selective wideband complementary FSS with high angular stability

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