A Triple Band Frequency Selective Surface Design for GSM Systems by Utilizing a Novel Synthetic Resonator

Kartal, Mesut; Golezani, Javad Jangi; Döken, Bora

doi:10.1109/tap.2017.2670230

Cited by 58 publications

(45 citation statements)

References 11 publications

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“…Although some previous works have better performance with respect to maximum frequency deviation, but they are unable to maintain stability under oblique incidence up to ±80°. Furthermore, it is to be noted that if oblique incidence up to ±60° is taken into account, the proposed FSS shows maximum frequency deviation of 0.9% which is comparable to [9,13,15].…”

Section: Resultsmentioning

confidence: 89%

“…In order to comprehend the novelty of the proposed structure, it is compared with previously reported bandstop FSS [8][9][10][11][12][13][14][15][16] and the results are tabulated in Tab. 2.…”

Section: Resultsmentioning

confidence: 99%

“…In order to satisfy these requirements, multiple bandstop FSS with polarization insensitivity and stability under oblique incidence are seeking attention and have been reported in recent literature [9][10][11][12][13][14][15][16]. However, for FSS structures acting as multiple bandstop filter (BSF), the response under oblique incidence gets worse as it approaches towards grazing angle of ± 90°.…”

Section: Introductionmentioning

confidence: 99%

“…However, for FSS structures acting as multiple bandstop filter (BSF), the response under oblique incidence gets worse as it approaches towards grazing angle of ± 90°. Hence, stable characteristic is limited to, generally, within ± 60° incident angle in case of triple band FSS [12][13][14][15][16]. As a result, the use of multiband bandstop FSS becomes limited in complex multipath environment.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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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Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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show abstract

“…Triple band-stop characteristics has been achieved using simple conducting elements on both sides [19], and here the design is simple and easily optimizable, but the angular stability is only up to 30 • . A complex design based on a rectangular shaped synthetic resonator [20] is also proposed for triple stopband characteristics; however, its application is limited due to non-availability of the synthetic resonator.…”

Section: Introductionmentioning

confidence: 99%

Reduction of Mobile Phone Radiation Exposure Using Multi-Stopband Frequency Selective Surface

Paul¹,

Mandal²,

Acharjee³

et al. 2019

PIER M

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Here, a multi-stopband frequency selective surface (FSS), covering commercial frequency bands CDMA, GSM-900, GSM-1800, LTE-2200 MHz, Wi-Fi, and Bluetooth for mobile communication applications has been proposed employing a pair of concentric square ring patches as a unit cell. Possibilities of annular ring patch type FSS are explored first. Finally, the design comes up with a compact square ring patch type single layer FSS. It is also explored that by increasing the width of the inner ring, operating bandwidth can be enhanced to cover closely spaced commercial frequency bands in a single band. Thereby the mutual coupling between the closely spaced resonators for multiple bands can be minimized. The proposed design is flexible enough to tune the desired resonance frequency by changing the length of the individual ring resonators. The design concept has been formulated using linear polynomial regression (LPR) techniques and validated through proper measurement of the fabricated prototype. This FSS can be used as a mobile back cover to protect mobile users from harmful radiations.

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An ultra‐miniaturized single‐layer multiband frequency selective surface with vent for wireless communication

Kanagasabai,

Viswanathan,

Premkumar

et al. 2024

Int J Communication

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SummaryA novel single‐layer ultra‐miniaturized multi‐band Frequency Selective Surface (FSS) with a circular vent is designed for shielding LTE and ISM bands. The top layer of the proposed FSS unit cell incorporates a circular patch along with convoluted arms. The designed FSS unit cell exhibits band‐rejection characteristics with a resonance of 800 MHz, 2.45 GHz, and 5 GHz and bandwidths of 523 MHz, 687 MHz, and 725 MHz, respectively. The periodicity of an ultra‐miniaturized FSS unit cell is 0.024λօ x 0.024λօ, encompassing a spatial vent hole of 0.01λօ, where λօ corresponds to the lowest operating frequency. Moreover, the proposed FSS unit cell remains unaltered angular stability up to 75° with less than 1% frequency deviation in TE and TM modes. Good polarization insensitivity for the designed four‐fold symmetrical FSS unit cell is achieved. Further, an Equivalent Circuit Model (ECM) analysis is developed to infer the physical insight of the proposed FSS unit cell. The FSS prototype is measured for the assertion, and the good agreement between the findings from simulation and measurement is validated. For real‐time assertion, the FSS prototype is verified using the Amitech SDR04. Thus, FSS is a promising candidate with good ventilation for shielding the LTE, Bluetooth, and Wi‐Fi application bands.

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A Triple Band Frequency Selective Surface Design for GSM Systems by Utilizing a Novel Synthetic Resonator

Cited by 58 publications

References 11 publications

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

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

Reduction of Mobile Phone Radiation Exposure Using Multi-Stopband Frequency Selective Surface

An ultra‐miniaturized single‐layer multiband frequency selective surface with vent for wireless communication

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