A novel absorb/transmit FSS for secure indoor wireless networks with reduced multipath fading

Kiani, Ghaffer I.; Weily, Andrew R.; Esselle, Karu P.

doi:10.1109/lmwc.2006.875589

Cited by 124 publications

(71 citation statements)

References 4 publications

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“…VALIDATION OF THE EQUIVALENT CIRCUIT MODEL For validation of the proposed equivalent circuit, we used measurements obtained in [17] and [18] to compare with simulations obtained from the equivalent circuit for the cross dipole array. …”

Section: Cross Dipole Modeling Using the Equivalent Circuit Methodsmentioning

confidence: 99%

Optimization of Frequency Selective Surfaces with Crossed Dipoles Using the Taguchi's Method

Santos

Filgueira

Campos

et al. 2017

J. Microw. Optoelectron. Electromagn. Appl.

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Section: Cross Dipole Modeling Using the Equivalent Circuit Methodsmentioning

confidence: 99%

Optimization of Frequency Selective Surfaces with Crossed Dipoles Using the Taguchi's Method

Santos

Filgueira

Campos

et al. 2017

J. Microw. Optoelectron. Electromagn. Appl.

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“…For some applications, especially at low frequency, FSS of relatively small electrical dimension is highly desirable. Furthermore, the explosive growth recently in wireless security [6][7][8] has also increased the demands for FSS miniaturization techniques. For wireless security in buildings, FSS may be placed in the walls of the building to provide isolation, reduce interference between adjacent vicinities and protect people from electromagnetic radiation.…”

Section: Introductionmentioning

confidence: 99%

“…In [6][7][8][9][10], the oblique incidence and polarization performance of the cross dipole FSS, the bandwidth enhancement using SIW (substrate integrated waveguide), and the effect of the building materials on FSS response have been investigated. However, the size reduction is not satisfactory, and the manufacture cost is higher (the structure is more complex).…”

Section: Introductionmentioning

confidence: 99%

A New Miniaturized Fractal Frequency Selective Surface With Excellent Angular Stability

Xue¹,

Gong²,

Zhang³

et al. 2010

PIER Letters

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Abstract-A new miniaturized bandpass fractal frequency selective surface (FSS) with excellent angular stability performance is proposed. The miniaturization has been achieved by scheming out a symmetric fractal pattern of continuous slots from the surface of a square-shaped patch, in which each periodic cell consists of incurved slot resonator for reducing the cell size. Reduction in FSS size of up to 74% with respect to the conventional square loop aperture FSS operating at the same frequency of 3.3 GHz is obtained. Furthermore, results show excellent angular stability for both vertical and horizontal polarization at different incidence angles because of its fractal configuration. A prototype is fabricated, and the FSS measurement and simulation results are presented and discussed.

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“…Electromagnetic interference due to multiple reflections also poses a problem for wireless local area networks, and therefore designs that minimize this effect are also of interest. To suppress multiple reflections, a novel absorptive/transmissive FSS was investigated in [4] using a two layer cross dipole FSS screen, while a double-sided permeable wave absorber based on a resistive film design was reported in [5].…”

Section: Introductionmentioning

confidence: 99%

Multiband ultra-thin electromagnetic band-gap and double-sided wideband absorbers based on resistive frequency selective surfaces

Wang

Werner

2009

2009 IEEE Antennas and Propagation Society International Symposium

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1. Introduction Electromagnetic absorbing materials have been extensively studied for use in reducing reflections for a wide variety of applications, ranging from stealth technology to anechoic chambers. One of the most popular techniques is based on a Salisbury screen design, which consists of a resistive sheet placed a quarter-wavelength above a PEC ground plane separated by a dielectric layer [I]. However, for many applications the Salisbury screen is prohibitively thick and a more compact structure is desired. Recently, metamaterial surfaces have been utilized in the design of thin absorber screens [2]. Additionally, they have been utilized in the design of ultra-thin single-bandgap electromagnetic absorbers [3], which were based on using a genetic algorithm to optimize a metallic pattern printed on a very thin dielectric substrate backed by a PEC ground plane. Electromagnetic interference due to multiple reflections also poses a problem for wireless local area networks, and therefore designs that minimize this effect are also of interest. To suppress multiple reflections, a novel absorptive/transmissive FSS was investigated in [4] using a two layer cross dipole FSS screen, while a double-sided permeable wave absorber based on a resistive film design was reported in [5].Within the realm of metamaterial absorber design, multiband ultra-thin electromagnetic bandgap absorbers and double-sided absorber designs based on resistive frequency selective surfaces (FSSs) have not been widely investigated. In this paper, we present an efficient spectral-domain periodic method of moments (PMM) formulation for the analysis of resistive FSS screens embedded in a stratified medium. We apply a cascading procedure to generate a composite scattering matrix for the entire system consisting of multiple resistive FSS screens embedded in a stratified medium. In addition, the 2-D fast Fourier transform (FFT)-based method was applied to speed up calculation of the required impedance matrix elements. Moreover, an O(NlogN) FFT-based method with I-D implementation together with the sparse storage technique was employed to accelerate computation of the matrix-vector product within the bi-conjugate gradient (BCG) iterative solver. This hybrid method differs from the 2-D FFT techniques reported in [6]. Finally, this formulation will be applied to the design of multiband ultra-thin electromagnetic bandgap absorbers that operate over a wide range of incidence angles and double-sided wideband absorbers that employ resistive FSS screens.

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A novel absorb/transmit FSS for secure indoor wireless networks with reduced multipath fading

Cited by 124 publications

References 4 publications

Optimization of Frequency Selective Surfaces with Crossed Dipoles Using the Taguchi's Method

Optimization of Frequency Selective Surfaces with Crossed Dipoles Using the Taguchi's Method

A New Miniaturized Fractal Frequency Selective Surface With Excellent Angular Stability

Multiband ultra-thin electromagnetic band-gap and double-sided wideband absorbers based on resistive frequency selective surfaces

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