On Unified Numerical Algorithm for 3-D Scattering From Dielectric and PEC Random Rough Surfaces

Zhang, Lisha; Pan, George; Jones, Jimmy

doi:10.1109/tap.2017.2679768

Cited by 5 publications

(4 citation statements)

References 34 publications

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“…In the framework of the problem of scattering from rough interfaces, the point-matching method is the most used [64-70, 72, 74, 83], but a very popular choice is also the RaoWilton-Glisson (RWG) basis [84]. More recently, use of Haar [85], B-spline [85], and Coifman [62,86,87] wavelets as basis and test functions in the Galerkin method has also been demonstrated to lead to efficient evaluation of scattered field.…”

Section: Methods Of Moments (Mom)mentioning

confidence: 99%

See 1 more Smart Citation

Modelling Scattering of Electromagnetic Waves in Layered Media: An Up-to-Date Perspective

Imperatore

Iodice

Pastorino

et al. 2017

International Journal of Antennas and Propagation

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This paper addresses the subject of electromagnetic wave scattering in layered media, thus covering the recent progress achieved with different approaches. Existing theories and models are analyzed, classified, and summarized on the basis of their characteristics. Emphasis is placed on both theoretical and practical application. Finally, patterns and trends in the current literature are identified and critically discussed.

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Section: Methods Of Moments (Mom)mentioning

confidence: 99%

“…To reduce computational complexity to ( 2 ), iterative methods can be used. Linear iterative methods can be cast in the following general form: [58][59][60][61][62]. Conversely, if and do not depend on , the iterative method is said to be stationary.…”

Section: Iterative Methodsmentioning

confidence: 99%

Modelling Scattering of Electromagnetic Waves in Layered Media: An Up-to-Date Perspective

Imperatore

Iodice

Pastorino

et al. 2017

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

show abstract

“…[204] Different nonstationary methods have been applied to the rough interface scattering problem, namely, the conjugate gradient squared (CGS), biconjugate gradient-stable (BICGSTAB), quasiminimum residual (QMR), general minimal residual (GMRES), and conjugate gradient-normal equation (CGNR). [205,206] The nonstationary methods proved an ability to converge for a wider range of roughness conditions. On the other hand, it is easier to predict interface roughness conditions under which they rapidly converge with the stationary methods.…”

Section: Modeling Needs In Layered and Composite Structuresmentioning

confidence: 99%

Thermal Spray Coatings for Electromagnetic Wave Absorption and Interference Shielding: A Review and Future Challenges

et al. 2022

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This review aims to consolidate scattered literature on thermally sprayed coatings with nonionizing electromagnetic (EM) wave absorption and shielding over specific wavelengths potentially useful in diverse applications (e.g., microwave to millimeter wave, solar selective, photocatalytic, interference shielding, thermal barrier‐heat/emissivity). Materials EM properties such as electric permittivity, magnetic permeability, electrical conductivity, and dielectric loss are critical due to which a material can respond to absorbed, reflected, transmitted, or may excite surface electromagnetic waves at frequencies typical of electromagnetic radiations. Thermal spraying is a standard industrial practice used for depositing coatings where the sprayed layer is formed by successive impact of fully or partially molten droplets/particles of a material exposed to high or moderate temperatures and velocities. However, as an emerging novel application of an existing thermal spray techniques, some special considerations are warranted for targeted development involving relevant characterization. Key potential research areas of development relating to material selection and coating fabrication strategies and their impact on existing practices in the field are identified. The study shows a research gap in the feedstock materials design and doping, and their complex selection covered by thermally sprayed coatings that can be critical to advancing applications exploiting their electromagnetic properties.

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“…In the past decade, the numerical method has been widely used in the EM analysis owning to the rapid development of the high performance computer [8][9][10][11]. Among them, the finite-difference time-domain (FDTD) method is a powerful and popular technique for numerically solving the transient field problem, and it has achieved successful applications in the far-field scattering from rough surface [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

A Novel Hybrid Algorithm for Transient Near-Field Scattering from Rough Surface in 2-D Case

Tian

Wei

Yang

2021

International Journal of Antennas and Propagation

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A novel hybrid algorithm is proposed to reduce the computation cost of the finite-difference time-domain (FDTD) method in calculating the transient near-field scattering from rough surface. The scattering problem is split into the FDTD calculation of equivalent sources on the contour enclosing rough surface and the calculation of the near-field radiation with the two-dimensional (2-D) time-domain Huygens’ principle. The radiation fields are found from a surface integral of the temporal convolution for which the direct numerical integration of the convolution is computationally expensive. In this paper, the 2-D time-domain Green’s function as the convolution kernel is approximated with a sum of exponential terms by using the Prony’s method. Then, the semianalytical recursive convolution (SARC) approach is applied to complete the update of the near-field radiation. Compared with the traditional FDTD, this hybrid algorithm can significantly reduce the memory usage and run time, especially for the large distance between the rough surface and observation point.

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On Unified Numerical Algorithm for 3-D Scattering From Dielectric and PEC Random Rough Surfaces

Cited by 5 publications

References 34 publications

Modelling Scattering of Electromagnetic Waves in Layered Media: An Up-to-Date Perspective

Modelling Scattering of Electromagnetic Waves in Layered Media: An Up-to-Date Perspective

Thermal Spray Coatings for Electromagnetic Wave Absorption and Interference Shielding: A Review and Future Challenges

A Novel Hybrid Algorithm for Transient Near-Field Scattering from Rough Surface in 2-D Case

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