A novel miniaturized FSS based electromagnetic shield for SATCOM applications

Bilal, Muhammad; Saleem, Rashid; Shabbir, Tayyab; Shafique, Muhammad Farhan

doi:10.1002/mop.30696

Cited by 21 publications

(10 citation statements)

References 9 publications

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“…FSSs are used to control the transmission and reflection characteristics of an incident wave. Because of their frequency‐selective properties, FSSs have been considered in a wide variety of applications such as reflector antennas, radome design, shielding, enhance the antenna performance . Commonly, FSSs of different shapes are printed in the dielectric substrate.…”

Section: Introductionmentioning

confidence: 99%

“…Because of their frequency-selective properties, FSSs have been considered in a wide variety of applications such as reflector antennas, radome design, shielding, enhance the antenna performance. [11][12][13][14] Commonly, FSSs of different shapes are printed in the dielectric substrate. The shape, size, patch, and substrate materials and metal layer thickness constitute the frequency behavior of the FSS structure.…”

Section: Introductionmentioning

confidence: 99%

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Dual mode modified double square ring resonator structure at 76 GHz

Esmail

Majid

Abidin

et al. 2019

Micro & Optical Tech Letters

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Dual mode modified double square ring resonator (MDSRR) operating at 76 GHz millimeter‐wave has been simulated, and experimentally verified. MDSRR structure operates in two modes, metamaterial (MTM) mode and frequency selective surface (FSS) mode, depending on the direction of the electric field. The MDSRR in the MTM mode performs well at the desired frequency region by providing the highest insertion loss, S21, as reported in the literature with a loss of −0.5 dB. The electromagnetically induced transparency principle is applied to explain the loss reduction mechanism. The low losses MTM structure has the potential to enhance the performance of the radiating elements of the automotive radar systems. Conversely, in the FSS mode, the FSS characteristics of the proposed structure are numerically simulated and verified experimentally by changing the direction of the electric field along the x‐direction, in which the structure shows opposite behavior compared to the MTM performance. To demonstrate the validity of the FSS characteristics, the MDSRRs structure was tested using a waveguide measurement facility. The experiment results match well with that of the simulation, and wideband‐stop characteristics are introduced in the range of 74 GHz to 80.3 GHz.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dual mode modified double square ring resonator structure at 76 GHz

Esmail

Majid

Abidin

et al. 2019

Micro & Optical Tech Letters

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“…Frequency selective surfaces (FSS) have attracted the attention of researchers for their variety of electromagnetic (EM) properties which include their use as bandstop and bandpass filters [1], [2], artificial magnetic conductors [3], polarization converters [4] and reactive impedance surfaces [5]. The FSS structures exhibiting bandstop filter characteristics find applications in EM shielding, antenna beam shaping and reflector antennas [6][7][8]. Since, EM waves are subject to multipath propagation and FSS structures cannot be always put perpendicular to the incident EM waves, stable and unperturbed response is necessary for bandstop FSS under oblique incidence.…”

Section: Introductionmentioning

confidence: 99%

Design of Compact Polarization Insensitive Triple Bandstop Frequency Selective Surface with High Stability under Oblique Incidence

Ghosh¹,

Banerjee²,

Das³

2019

RADIOENGINEERING

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This paper proposes a novel design of a triple band frequency selective surface (FSS) that acts as a bandstop filter at 1.92 GHz, 3.5 GHz and 5.64 GHz. The bandstop frequencies resemble to GSM, WLAN and WiMAX application bands respectively. The structure is polarization insensitive since its frequency response remains unaltered for both TE and TM modes of electromagnetic wave propagation. The main attractive feature of the structure is its highly stable response under oblique incident angle up to ±80° at both TE and TM polarizations. Surface current distribution and equivalent circuit modeling are presented to demonstrate the resonance characteristic of the FSS. The structure is compact with an overall unit cell area of 0.09λ  0.09λ, where λ is the wavelength corresponding to the lowest resonant frequency. The proposed structure is compared with other multi-bandstop FSS structures in literature to highlight its superior functionality in terms of stability under oblique incidence and compactness. A prototype comprising of 6  6 array of the proposed unit cell is fabricated and the measured results are in good agreement with the simulated results. KeywordsFrequency selective surface, bandstop filter, polarization insensitive, oblique incidence angle, compact

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“…An array of metallic patches or grid type elements having band‐pass or band reject response is referred to as FSS. FSS finds their wide spread applications in antenna radomes, reduction in radar cross section, remote sensing and satellite communication services . They can also be employed as high‐impedance surfaces (HIS) in the form of superstrate or etched on the antenna substrate for the performance enhancement of antennas including bandwidth, gain, and directivity.…”

Section: Introductionmentioning

confidence: 99%

“…FSS finds their wide spread applications in antenna radomes, 1 reduction in radar cross section, 2 remote sensing and satellite communication services. 3,4 They can also be employed as high-impedance surfaces (HIS) in the form of superstrate or etched on the antenna substrate 5 for the performance enhancement of antennas including bandwidth, gain, and directivity. Moreover, they may also be employed to alter the polarization state of an antenna.…”

Section: Introductionmentioning

confidence: 99%

An FSS‐employed UWB antenna system for high‐gain portable devices

Saleem

Bilal

Shabbir

et al. 2019

Micro & Optical Tech Letters

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In this article, a high‐gain antenna for ultra‐wideband (UWB) communication is presented and experimentally validated. Gain enhancement is achieved by employing a frequency selective surface (FSS) screen as a superstrate. The proposed antenna‐FSS arrangement is less complex and realized on a low‐profile FR‐4 laminate. The antenna comprises a circular radiator that is enclosed in a triangular shaped arrangement of slots along with a narrow feed‐line. Lengths and widths of the different sections along with feed are optimized to achieve an ultra‐wide impedance bandwidth. The employed superstrate is an array of modified square shaped FSS (MS‐FSS). Full wave analysis validates its effectiveness in achieving at least 5 dBi gain enhancement of the UWB antenna while maintaining wideband impedance match. Moreover, the antenna behavior is also analyzed by varying periodicity and the distance between superstrate and the proposed slot antenna. This antenna‐FSS arrangement is a suitable candidate for high‐gain UWB portable devices.

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A novel miniaturized FSS based electromagnetic shield for SATCOM applications

Cited by 21 publications

References 9 publications

Dual mode modified double square ring resonator structure at 76 GHz

Dual mode modified double square ring resonator structure at 76 GHz

Design of Compact Polarization Insensitive Triple Bandstop Frequency Selective Surface with High Stability under Oblique Incidence

An FSS‐employed UWB antenna system for high‐gain portable devices

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