Analytical characterization and validation of creeping waves on dielectric coated and perfectly conducting cylinders

Naishadham, K.; Piou, Jean E.

doi:10.1029/2009rs004241

Cited by 12 publications

(8 citation statements)

References 26 publications

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“…This is analogous to the bare PEC cylinders and one-layer coated cylinders where the effect of the SW is more stronger for the TE case than the TM case. 27 For a two-layered coating, the RCS is influenced by many parameters such as the PEC core radius R o , layer thickness, and layer characteristic values (l p , e p ). This entails a thorough investigation which may be the theme of a future work.…”

Section: Numerical Resultsmentioning

confidence: 99%

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A surface integral equation formulation for electromagnetic scattering from a conducting cylinder coated with multilayers of homogeneous materials

Sakr

Soliman

Abdelmageed

2014

Journal of Applied Physics

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A surface integral equation formulation is presented for electromagnetic scattering by a conducting cylinder coated with multilayers of homogeneous materials. Each layer may have a nonunity relative permittivity and permeability. Both the TM and TE polarizations are considered. The surface equivalence principle is utilized to model the problem where each layer is replaced by equivalent surface currents residing on the enclosing boundaries. A systematic procedure is developed to generate a set of coupled integral equations for an arbitrary number of layers. The method of moments is invoked to convert these equations into a sparse matrix equation which can be solved using sparse matrix routines. Numerical results are presented to demonstrate the accuracy and efficiency of the proposed method. The performance of the method is compared with that of the volume-surface integral equation formulation where a great saving in memory storage and computation time is achieved. V C 2014 AIP Publishing LLC.

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Section: Numerical Resultsmentioning

confidence: 99%

“…The five coupled equations (37)-(41) are formulated in terms of nine unknown surface currents. However, using (27) and (28) reduces the total unknowns to only five. Thus, the coupled integral equations can be solved to get the unknown surface currents.…”

Section: Sief-h For a Two-layer Coatingmentioning

confidence: 99%

A surface integral equation formulation for electromagnetic scattering from a conducting cylinder coated with multilayers of homogeneous materials

Sakr

Soliman

Abdelmageed

2014

Journal of Applied Physics

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“…More rigorous approaches of deforming the contour path of the integral do exist [46], but are tedious to implement for a general metasurface. Without a detailed analysis of the poles of the surface integral, and an appropriate deformation of the contour integral path to account for these poles, it is challenging to compute the integral directly.…”

Section: Transition Integral a Evaluation Of The Fock-type Integral F...mentioning

confidence: 99%

Ray Optical Scattering From Uniform Reflective Cylindrical Metasurfaces Using Surface Susceptibility Tensors

Stewart

Smy

Gupta

2022

IEEE Trans. Antennas Propagat.

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A ray optical methodology based on the uniform theory of diffraction is proposed to model electromagnetic field scattering from curved metasurfaces. The problem addressed is the illumination of a purely reflective uniform cylindrical metasurface by a line source, models the surface with susceptibilities and employs a methodology previously used for cylinders coated in thin dielectric layers [1]. The approach is fundamentally based on a representation of the metasurface using the General Sheet Transition Conditions (GSTCs) which characterizes the surface in terms of susceptibility dyadics. An eigenfunction description of the metasurface problem is derived considering both tangential and normal surface susceptibilities, and used to develop a ray optics (RO) description of the scattered fields; including the specular geometrical optical field, surface diffraction described by creeping waves and a transition region over the shadow boundary. The specification of the fields in the transition region is dependent on the evaluation of the Pekeris caret function integral and the method follows [1]. The proposed RO-GSTC model is then successfully demonstrated for a variety of cases and is independently verified using a rigorous eigenfunction solution (EF-GSTC) and full-wave Integral Equation method (IE-GSTC), over the entire domain from the deep lit to deep shadow.

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“…A GTD/UTD formulation for the Impedance Boundary Condition (IBC) was done in [11], [12] and for dielectric coated cylinders in [13], [14]. These approximations would be more appropriate to use for on-body propagation than the PEC assumption.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is relevant to find a formulation valid for human tissue. However, the approaches used in [11]- [14] are useful.…”

Section: Introductionmentioning

confidence: 99%

Geometrical Theory of Diffraction Formulation for On-Body Propagation

Kammersgaard

Kvist

Thaysen

et al. 2019

IEEE Trans. Antennas Propagat.

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Analytical characterization and validation of creeping waves on dielectric coated and perfectly conducting cylinders

Cited by 12 publications

References 26 publications

A surface integral equation formulation for electromagnetic scattering from a conducting cylinder coated with multilayers of homogeneous materials

A surface integral equation formulation for electromagnetic scattering from a conducting cylinder coated with multilayers of homogeneous materials

Ray Optical Scattering From Uniform Reflective Cylindrical Metasurfaces Using Surface Susceptibility Tensors

Geometrical Theory of Diffraction Formulation for On-Body Propagation

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