3-D Electromagnetic Scattering From Multilayer Dielectric Media With 2-D Random Rough Interfaces Using &lt;inline-formula&gt; &lt;tex-math notation="LaTeX"&gt;$T$ &lt;/tex-math&gt; &lt;/inline-formula&gt;-Matrix Approach

Sanamzadeh, Mohammadreza; Tsang, Leung; Johnson, Joel T.

doi:10.1109/tap.2018.2878332

Cited by 13 publications

(3 citation statements)

References 21 publications

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“…During the surface roughness analysis, the root mean square (RMS) of the surface height was mostly used during the modeling [ 9 , 23 , 24 , 25 , 26 , 27 , 28 ]. On the other hand, analytical models were also used to study the surface roughness of the conductors, such as the gradient model [ 29 , 30 , 31 , 32 , 33 , 34 , 35 ], state-space formulation [ 33 ], Green’s function [ 36 , 37 , 38 ], fast Fourier transformation (FFT) [ 39 ], method of momentum (MoM) [ 40 ], small perturbation method [ 24 ], and Gaussian function from Campbell’s theorem [ 27 , 28 ]. Some other researchers added correction factors to change the smooth surface models to rough surface models [ 11 , 41 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Surface Roughness on the Electrical Performances of CPW Transmission Lines Used in Future Ultra-High Frequency Applications

Chen

Tian

2022

Micromachines

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The development of integrated circuits and packaging technology has led to smaller and smaller transmission line sizes and higher and higher operating frequencies up to nearly 100 GHz. However, the skinning depth of transmission lines due to eddy currents becomes smaller and smaller as the operating frequency of coplanar wave guide (CPW) transmission lines becomes higher and higher, while the reduction of device size makes the skinning depth consistent with the surface roughness of the device. In this paper, the concept of modified roughness coefficient was proposed based on the existing correlation factor. The concept of threshold modified roughness coefficient was proposed with a 20 dB reflection coefficient as the threshold value. The effect of surface roughness on transmission line transmission performance at frequencies above 100 GHz up to 1000 GHz was investigated. It was found that when the operating frequency of the signal was greater than the threshold roughness coefficient, the effect of surface roughness on the transmission line reflection coefficient should be considered. The modified roughness coefficient in this paper could quickly determine the effect of surface roughness on transmission line performance at different frequencies.

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Section: Introductionmentioning

confidence: 99%

Effect of Surface Roughness on the Electrical Performances of CPW Transmission Lines Used in Future Ultra-High Frequency Applications

Chen

Tian

2022

Micromachines

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“…Actually very few methods apply to the resonant domain [27,28] where roughness parameters are comparable to the illumination wavelength. The number of methods again decreases when the illuminated sample is a rough multilayer [29,30]. In this paper we present and use a boundary integral formalism for the electromagnetic wave scattering from rough multilayers [25].…”

Section: Introductionmentioning

confidence: 99%

Black paints covered with multidielectrics: light absorbers

Soriano¹,

Zerrad²,

Amra³

2020

Opt. Express

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Black paints are commonly used to provide broadband light absorbers in highprecision optics. We show how multidielectric coatings improve the performances of these absorbers. The coated rough paints still exhibit a quasi-lambertian diffuse reflection, but this scattering pattern can be reduced by several orders of magnitude, which strongly enhances absorption. Predictions are based on an exact electromagnetic theory of light scattering from arbitrary rough multilayers. Results are also compared to useful approximate theories.

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“…Zamani et al [27] reported a perturbation approach, the extended boundary condition (EBC)-based SPM to study the scattering from inhomogeneous media with arbitrary dielectric profiles. A translation matrix (T-Matrix) solution to the 3-D EM scattering from the dielectric layered medium was proposed in [28].…”

mentioning

confidence: 99%

Depolarized Scattering of Rough Surface With Dielectric Inhomogeneity and Spatial Anisotropy

Yang

Chen

Yang

et al. 2021

IEEE Trans. Geosci. Remote Sensing

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This article presents a new index, polarizationconversion ratio (PCR) to characterize depolarized bistatic scattering from rough surfaces with dielectric inhomogeneity and spatial anisotropy. We then investigate the dependence of PCR on both surface and radar parameters. Numerical results show that the distribution of PCR on the scattering plane varies with the polarization state of the incident wave and incident angle. The PCR clusters more in the cross-plane for horizontally polarized incidence. However, for vertically polarized incidence, the PCR disperses as "triangular shape" on the whole scattering plane with a sharp valley occurring in the incident plane. The following points can be drawn: 1) the inhomogeneity effectively enhances the PCR in the cross-plane; 2) the effect of anisotropy on the PCR is relatively weak, because the scattering is less affected by correlation length; 3) the impacts of surface rms height on the PCR are negative on the whole scattering plane; and 4) as the background permittivity increases, at the horizontally polarized incidence, the PCR is enhanced in the backward and forward regions, while at vertically polarized incidence, it is enhanced in the incident plane and the forward region. As is demonstrated, the PCR is an effective measure of the sensitivity of depolarization, making it potentially useful as a new reliable index for surface parameter inversion.

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3-D Electromagnetic Scattering From Multilayer Dielectric Media With 2-D Random Rough Interfaces Using <inline-formula> <tex-math notation="LaTeX">$T$ </tex-math> </inline-formula>-Matrix Approach

Cited by 13 publications

References 21 publications

Effect of Surface Roughness on the Electrical Performances of CPW Transmission Lines Used in Future Ultra-High Frequency Applications

Effect of Surface Roughness on the Electrical Performances of CPW Transmission Lines Used in Future Ultra-High Frequency Applications

Black paints covered with multidielectrics: light absorbers

Depolarized Scattering of Rough Surface With Dielectric Inhomogeneity and Spatial Anisotropy

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