Thin dielectric sheet simulation by surface integral equation using modified RWG and pulse bases

Chiang, I-Ting; Chew, Weng Cho

doi:10.1109/tap.2006.877180

Cited by 59 publications

(34 citation statements)

References 17 publications

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“…When the thickness of the dielectric coating is very small compared to the wavelength, the field varies little in the normal direction. A straightforward way is to approximate the fields to no variation with respect to the normal direction and this procedure is so named thin dielectric sheet (TDS) approximation [12][13][14][15][16][17][18][19][20]. Decompose the D and B fluxes into tangential and normal components, namely…”

Section: Formulations For Electronic Filed Integral Equationmentioning

confidence: 99%

“…The hybrid PEC-dielectric formulation [12], which bases on the rigorous integral formulation, provides an alternative to the IBC for dielectriccoated metallic surfaces by combining the thin dielectric sheet approximation [13,14] with explicit boundary conditions. However, all previous researches, including our recent improving research work [15][16][17][18][19][20], only can solve the electric dielectric-coated problems.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Solution of Scattering From Thin Dielectric-Coated Conductors Based on TDS Approximation and Em Boundary Conditions

He¹,

Nie²,

Hu³

2009

PIER

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Abstract-Thin dielectric sheet (TDS) approximation and electromagnetic (EM) boundary conditions are considered together to derive out a set of integral equations as an alternative to the impedance boundary condition (IBC) method to solve the electromagnetic scattering from thin dielectric-coated conductors. Only with discretizing the induce current on the conductor surfaces and solving an integral equation similar to that for a perfect electric conductor (PEC), the scattering fields from the whole coating system (electric or magnetic material coating) are computed. Both the electric field integral equation (EFIE), magnetic field integral equation (MFIE) and their combination form are presented. These equations are converted to a matrix equation by Galerkin's method and then solved with multilevel fast multipole algorithm (MLFMA) to obtain the far fields scattering from these coated objects.

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Section: Formulations For Electronic Filed Integral Equationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Solution of Scattering From Thin Dielectric-Coated Conductors Based on TDS Approximation and Em Boundary Conditions

He¹,

Nie²,

Hu³

2009

PIER

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“…Configurations containing one or more thin-sheet, high-contrast disks of finite planar supports and embedded in a homogeneous, isotropic embedding, can advantageously be handled via an integral-equation formulation. We illustrate the relevant procedure by considering the scattering of an arbitrary incident field by the disk specified by (1). The contrast sheet electric current density generates the scattered field .…”

Section: The Thin-sheet High-contrast Boundary Conditionmentioning

confidence: 99%

“…In the analysis, design and optimizations stages of all these technical applications, as well as their associated electromagnetic interference analyses, the computational modeling of the governing electromagnetic field is a subject of considerable importance and concern. Standard approaches to the discretization of Maxwell's equations in such structures are faced with serious difficulties as to the meshing or gridding of the configuration [1]. To overcome this difficulty, several approximate procedures have been proposed.…”

Section: Introductionmentioning

confidence: 99%

Pulsed EM Field Response of a Thin, High-Contrast, Finely Layered Structure With Dielectric and Conductive Properties

Hoop

Jiang

2009

IEEE Trans. Antennas Propagat.

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Abstract-The response of a thin, high-contrast, finely layered structure with dielectric and conductive properties to an incident, pulsed, electromagnetic field is investigated theoretically. The fine layering causes the standard spatial discretization techniques to solve Maxwell's equations numerically to be practically inapplicable. To overcome this difficulty, an approximate method is proposed that models the interaction of the layer with an incident electromagnetic field via a boundary condition that expresses the in-plane conduction and contrast electric polarization currents in terms of the exciting incident field by relating the jump in the tangential component of the magnetic field strength across the layer in terms of the (continuous) tangential component of the electric field strength in the layer. In the pertaining layer admittance coefficient, the integrated values of the conductance and the contrast permittivity profiles across the layer occur. The model is applied to the scattering of an incident plane wave with pulsed time signature by a layer of infinite extent. Expressions for pulse shapes of the scattered field are obtained. In them, the layer properties and the direction of incidence and polarization of the incident wave occur as parameters. Numerical results are presented for reflected and transmitted wave pulse shapes for some parameter values.Index Terms-High-contrast thin layers, pulsed EM fields.

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“…In this case, the TDS [6][7][8] approximation is presented. As a powerful progress in the computational electromagnetics (CEM), the TDS approximation is a reliable method in the analysis of thin dielectric-coated scatters.…”

Section: Introductionmentioning

confidence: 99%

The Application of Modified Phase Extracted Basis Functions in Scattering Analysis of Dielectric-Coated Targets

Niu¹,

Nie²,

He³

2012

PIER

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Abstract-A novel basis function, called as the Modified Phase Extracted (MPE) basis function, has been proposed to analyze threedimensional scattering problems for electrically large, thin dielectriccoated targets. The MPE basis function, which can be defined on large (e.g., a wavelength or more) curvilinear geometrical elements, is developed for quadrilateral cells. Consequently, combining with the thin dielectric sheet (TDS) approximation, the MPE basis function solves the scattering problem accurately with fewer unknowns than the solutions based on the conventional basis functions. In order to improve the accuracy of the solution solving the problem which has thicker dielectric coatings, some modifications about the TDS approximation model are made. Numerical examples demonstrate that the validity of the proposed approach in solving the scattering from electrically large, thin coated objects.

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Thin dielectric sheet simulation by surface integral equation using modified RWG and pulse bases

Cited by 59 publications

References 17 publications

Numerical Solution of Scattering From Thin Dielectric-Coated Conductors Based on TDS Approximation and Em Boundary Conditions

Numerical Solution of Scattering From Thin Dielectric-Coated Conductors Based on TDS Approximation and Em Boundary Conditions

Pulsed EM Field Response of a Thin, High-Contrast, Finely Layered Structure With Dielectric and Conductive Properties

The Application of Modified Phase Extracted Basis Functions in Scattering Analysis of Dielectric-Coated Targets

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