Experimental verification of electromagnetic scattering via two-dimensional periodic array of small resonant apertures

Cho, Young-Ki; Yeo, Junho; Ko, Ji-Hwan; Kim, Ki-Chai

doi:10.1587/elex.14.20170796

Cited by 5 publications

(5 citation statements)

References 13 publications

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“…Recent studies have focused on the reduction of electromagnetic penetration through narrow slots in a conducting screen, and electric shielding effectiveness has been considered for a dual plate with narrow slots [12][13][14][15][16][17][18]. The resonant behavior of a small aperture backed by a conducting body has been reported [19], and enhanced resonance transmission has been investigated on shaped apertures, narrow small slots, and small square slots using two parallel wires (acting as a reactance) loaded in the slot [20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Resonance Transmission of Dual Plates with Narrow Small Slots due to Two Parallel Wires for Frequencies around 2 GHz

Kim

Park²,

Min

et al. 2021

J Electromagn Eng Sci

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This paper presents the transmission cross-section (TCS) of a dual plate with narrow small slots when a plane wave is incident from the left half-space. Numerical results show that the TCS depends mainly on the plate spacing for a specified frequency. The TCS fluctuates with the plate spacing; the fluctuation period is approximately 0.5λ. When the plate spacing is larger than 0.5λ, the TCS reduces to 90% in the single plate case, and TCS enhancement is extremely difficult. However, when the plate spacing is less than 0.5λ, the TCS decreases gradually to approximately 36% in the single plate case, and TCS enhancement can be realized using two parallel wires. The analysis results show that resonance transmission is effectively obtained by the wires connected on the slots for a plate spacing within 0.5λ. Experimental measurements are presented to validate the theory.

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Section: Introductionmentioning

confidence: 99%

Resonance Transmission of Dual Plates with Narrow Small Slots due to Two Parallel Wires for Frequencies around 2 GHz

Kim

Park²,

Min

et al. 2021

J Electromagn Eng Sci

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“…A frequency-selective surface (FSS) is essentially an electromagnetic spatial filter with a conventional planar twodimensional periodic array structure. When the incident electromagnetic wave frequency is at the resonant frequency of the aperture type or patch type unit, the FSS will exhibit significant bandpass or bandstop filter characteristics [1,2]. FSSs have widely been used in spatial filters, absorbers, antenna radomes, and electromagnetic compatibility in the microwave, millimeter-wave and taraherz ranges [3,4,5,6].…”

Section: Introductionmentioning

confidence: 99%

A compact FSS with dual passbands and wide stopband

Xia¹,

Liu²,

Tang

et al. 2019

IEICE Electron. Express

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A novel compact multi-band frequency selective surface (FSS) with dual passbands and wide upper stopband is presented. The proposed FSS was originally a double-layer structure. The grid-double square loops (G-DSLs) are located at the bottom to achieve the dual passband characteristics. In order to realize wide upper stopband, a modified square ring and a Jerusalem cross (M-SR-JC) element structure at top and bottom are used. Considering the higher power engineering applications, the final FSS uses a multi-layer structure. The FSS provides two pass-bands centered at 3.8 and 5.8 GHz with relative bandwidths of 18.4% and 13.5%, respectively. It also provides wide stopband characteristics from 10.8 GHz to 14.5 GHz. The simulation and measurement are in good agreement. The novel FSS with dual passbands and wide upper stopband is compact; easy to design and fabricate, and achieves relatively stable multi-band response under different polarization states and different incident angles. The proposed FSS can better meet the engineering requirements.

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“…A very small number of electromagnetic waves are transmitted through small slots. To obtain a high transmission efficiency for an electrically small aperture, resonance transmission is obtained by placing a capacitor across the midpoint of the aperture [19] and by deforming the aperture shape [20,21,22,23,24,25,26,27,28,29].…”

Section: Introductionmentioning

confidence: 99%

Enhanced resonance transmission of a small square aperture loaded with parallel wires in a ground plane

Kim

Cho

2019

IEICE Electron. Express

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This paper presents the resonance transmission of a small, square aperture with two parallel wires in a ground plane. When a plane wave excites a square aperture, aperture resonance occurs using parallel wires, which is known as resonance transmission or maximum power transmission. The resonant frequency of a 3-cm square aperture structure was reduced from 4.18 GHz to various desired frequencies by adding wires. The enhanced transmission cross sections using two parallel wires were ≈3λ 2 /4π (= 2Gλ 2 /4π, G = 1.5) for square widths of ≲0.22λ, and approached 3.56λ 2 /4π (= 2Gλ 2 /4π, G = 1.78) for square widths ≳0.22λ. The small square aperture enhanced transmission cross sections using parallel wires were between 3λ 2 /4π and 3.56λ 2 /4π.

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Experimental verification of electromagnetic scattering via two-dimensional periodic array of small resonant apertures

Cited by 5 publications

References 13 publications

Resonance Transmission of Dual Plates with Narrow Small Slots due to Two Parallel Wires for Frequencies around 2 GHz

Resonance Transmission of Dual Plates with Narrow Small Slots due to Two Parallel Wires for Frequencies around 2 GHz

A compact FSS with dual passbands and wide stopband

Enhanced resonance transmission of a small square aperture loaded with parallel wires in a ground plane

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