A Convoluted Structure for Miniaturized Dual-Bandstop Frequency Selective Surface

Ma, Yuhong; Wu, Weiwei; Yuan, Ye; Zhang, Ximeng; Yuan, Naichang

doi:10.1109/lawp.2018.2890008

Cited by 28 publications

(32 citation statements)

References 24 publications

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“…Performances of the proposed dual stopband FSS is compared with recent state-of-the-art works as presented in Table 1. The proposed FSS shows lower frequency ratio in compare with 17,25,26,28,30,33 and for the remaining work frequency ratio is comparable except. 32 Moreover, angular stability is also better than the Reference 32,33.…”

Section: Resultsmentioning

confidence: 83%

“…Also the proposed FSS exhibits lower unit cell periodicity than. 25,32,33 Although unit cells in 17,[28][29][30] have miniaturized dimension but those geometries incur more design and fabrication complexity due to either convoluted pattern or dual layer metal via loaded configuration. These two reasons restrain the ease of tuning the filter response at different frequency band.…”

Section: Resultsmentioning

confidence: 99%

“…[17][18][19] Miniaturized FSS with periodic metal patches and wire mesh grids as nonresonant constituent elements for single passband first order 20 and high order 21 filter resonances are realized. Instead of single passband or stopband, FSS with multiple resonances is preferred for multifunctional situation [22][23][24][25][26][27][28][29][30][31][32][33] Single and multilayer based dual band passband FSS with first order 22,23 and third order 24 filter responses are proposed in recent years. FSS with multiple stop band resonances is needed in many applications like electromagnetic shielding to avoid interference, or as a reflector for dual band monopole or dipole antenna to improve radiation directivity.…”

Section: Introductionmentioning

confidence: 99%

“…27 Various miniaturized dual stop band FSSs with closely located frequencies based on convoluted geometry are presented in recent years. [28][29][30][31][32][33] Apart from spatial filtering of EM wave, polarization of the wave needs to modulate in different wireless applications. Traditional approaches of changing the polarization state are based on optical grating, dichroic or twisted liquid crystal results in narrow bandwidth.…”

Section: Introductionmentioning

confidence: 99%

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Miniaturized dual stop band frequency selective surface with broadband linear co to cross polarization conversion ability

Dey

Koul

2021

Int J RF Microw Comput Aided Eng

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This work presents a miniaturized angularly stable frequency selective surface (FSS) on a single layer substrate. Unit cell comprises of convoluted circular rings connected cross dipole and linear arrow headed dipole printed on both sides of the substrate. A closely spaced dual stop band resonances are obtained at 10 and 14.3 GHz with frequency ratio of 1.43. FSS shows a À 10 dB stopband bandwidth (BW) from 7.32 to 11.05 GHz (40.61%) and 12.68 to 15.97 GHz (22.97%) with >30 dB stop band rejection at center frequencies. FSS poses the features of stable performance under change in polarization and angularly stable response up to 60 incident angle. Later the proposed FSS is printed on grounded thick dielectric substrate and it shows broadband reflection type co to cross polarization conversion from 7.2 to 17.32 GHz (82.54%) with polarization conversion ratio >80% and oblique angle stability up to 35 . To the best of authors' knowledge, this is the first time in literature a single unit cell geometry with two different properties, spatial filtering on transmission and polarization conversion on reflection have been designed and analyzed in details. A finite array with size 25 Â 25 of the proposed FSS is fabricated and the measured filter response shows a good agreement with simulated performance at normal and oblique incidences. The proposed FSS is used as a reflector of a dual band monopole antenna and the simulation results shows gain improvement of 5.51 and 3.8 dB at the two stopband frequencies.

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Section: Resultsmentioning

confidence: 83%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Miniaturized dual stop band frequency selective surface with broadband linear co to cross polarization conversion ability

Dey

Koul

2021

Int J RF Microw Comput Aided Eng

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“…Moreover, in view of the isolation between the multi-resonance, the coupling between the resonant structures should also be taken into consideration. In order to solve these problems, several techniques are reported to achieve a high selective dual-band performance, such as convolution [12] - [17], 2.5-D [18] [19], 3D [20] and multi-layer [21] techniques. In this paper, band-pass FSS with compact dimension and highly isolated dual resonances is proposed based on fractal technology.…”

Section: Iintroductionmentioning

confidence: 99%

Dual-Band Frequency Selective Surface With Compact Dimension and Low Frequency Ratio

et al. 2020

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In this paper, frequency selective surface (FSS) with low profile, miniaturized structure and closely located dual-band is proposed based on the fractal technology. The FSS is designed by etching the conductive pattern on a single layer substrate. Two fractal slots are designed to increase the spatial efficiency of the pattern and provide two isolated resonances. For the dual-band FSS, the miniaturization should work for both of the resonances to keep the frequency ratio. Therefore, the slots are convoluted as different principles and twisted with each other to keep the miniaturization and isolation. With the thirdorder fractal pattern, two pass-bands are achieved at 1.04 GHz and 1.49 GHz with the frequency ratio of 1.42. The dimension of the element is as compact as 0.039λ × 0.039λ where λ is the wavelength of low frequency resonance. Moreover, benefiting from the miniaturized element, the angular stability is very good that the resonances keep stable when the incident angle increasing from 0° to 60°. In order to get insight of the mechanism of the proposed element, an equivalent circuit model is established and studied. A prototype is fabricated and all the proposed performances are verified by simulations and measurements.

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Miniaturized frequency‐selective surface with reduced number of metallic vias for electromagnetic shielding

Andi,

G. P.

2023

Int J Communication

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SummaryA miniaturized frequency‐selective surface (FSS) for radio frequency (RF) filtering applications is reported in this paper. The proposed FSS is designed to operate with band stop property at 1.57 GHz. The FSS element is developed using highly convoluted lines running on either side of the substrate interconnected using via lines. This specific arrangement increases the electrical length of the resonator without increasing the physical size. Furthermore, the stability towards polarization variation and independence to different angles of incidence are other major concerns in the design of FSS. The FSS unit cell has rotational symmetry thereby providing polarization‐independent operation. The angular independence is tested for various incidence angles, and the results are presented. The performance of the FSS is validated in real time, and the results are presented. The maximum realized transmission loss is 27 dB at 1.57 GHz, and the attenuation bandwidth with reference 10 dB shielding level is estimated to be 400 MHz centered around 1.57 GHz. The convolution technique along with shorting vias has offered this extreme miniaturization ranging from 7% to 95.7% with reference to most of the FSS reported for L‐band services such as radio, telecommunications, military, and aircraft surveillance.

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A Convoluted Structure for Miniaturized Dual-Bandstop Frequency Selective Surface

Cited by 28 publications

References 24 publications

Miniaturized dual stop band frequency selective surface with broadband linear co to cross polarization conversion ability

Miniaturized dual stop band frequency selective surface with broadband linear co to cross polarization conversion ability

Dual-Band Frequency Selective Surface With Compact Dimension and Low Frequency Ratio

Miniaturized frequency‐selective surface with reduced number of metallic vias for electromagnetic shielding

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