Wave diffraction by a perfect electromagnetic conductor wedge

Umul, Yusuf Ziya

doi:10.1016/j.ijleo.2019.01.114

Cited by 10 publications

(5 citation statements)

References 17 publications

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“…where subindices T 1 and T 2 refer to the total fields in Medium I and Medium II, respectively [14]. In addition, n is the unit normal vector, and M represents the admittance parameter [7].…”

Section: The Electric Field Component Of Incident Plane Wave Ismentioning

confidence: 99%

“…where A[x] means only considering the amplitude of x by eliminating phase, and π ± φ 0 term represents the location of the transition boundaries [14]. In order to obtain the diffracted wave, f n (φ, φ 0 ) function should be determined.…”

Section: Derivation Of Diffracted Wavesmentioning

confidence: 99%

“…However, this study lacks explicit analytic expressions for the diffracted waves. The second one was put forth by Umul [14]. In his paper, z components of the electric and magnetic fields were expressed in terms of a combination of the scattered waves by soft and hard surfaces with the same geometry.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Wave Scattering by a Perfect Electromagnetic Conductor Wedge Residing Between Isorefractive Media

Basdemir¹

2020

PIER M

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In this study, plane wave diffraction by a perfect electromagnetic wedge which is lying between isorefractive media is investigated. The diffracted waves are constructed by using the relation between initial geometric optics waves and scattered waves at the transition boundaries. The uniform theory of diffraction method is used for derivation of the uniform wave expressions. Thus, obtained uniform expressions are analyzed numerically for different set of parameters.

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Section: The Electric Field Component Of Incident Plane Wave Ismentioning

confidence: 99%

Section: Derivation Of Diffracted Wavesmentioning

confidence: 99%

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Wave Scattering by a Perfect Electromagnetic Conductor Wedge Residing Between Isorefractive Media

Basdemir¹

2020

PIER M

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“…Moreover, they are computationally efficient, making them suitable for rapid analysis and engineering design optimisation [4]. Furthermore, these methods serve as benchmarks for validating complex numerical simulations or experimental measurements [5]. The study highlights the importance of impedance boundary conditions in electromagnetic scattering, as they describe the behaviour of electromagnetic fields at the boundary of a scatterer.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic scattering of H‐polarised cylindrical wave by a double‐sided impedance circular strip

Tabatadze,

Alperen,

Karaçuha

2023

IET Microwaves Antenna & Prop

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The authors investigate electromagnetic scattering by a circular strip with impedance boundary conditions in detail. The excitation is obtained by the H‐polarised line source and the impedance boundary condition with different impedance values on each surface of the circular strip is imposed. Electromagnetic scattering from circular strips is formulated employing an integral equation approach including the orthogonal polynomials while expressing the current densities on inner and outer surfaces. To consider the edge condition, the current density on the scatterer is expressed in terms of Gegenbauer polynomials with the weighting function. Unlike the previous studies, the authors investigate the behaviour of the EM field regarding the location of the cylinder source, the size of the aperture and the different impedance values. The convergence of the proposed approach, which is one of the analytical–numerical methods, is investigated for different impedance values; considering the results, resonators with impedance surfaces of certain complex values and certain locations of the cylinder source perform better than the known PEC and PMC resonators for some specific resonance cases. An effective analytical–numerical approach is proposed for such geometry with the impedance boundary condition. An extensive analysis and comparison with other methods are provided. The limit cases of the impedance boundary condition (Dirichlet and Neumann boundary conditions) are validated.

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“…There are several reasons that researchers focus on the topic such as developing faster converging numerical approaches [18][19][20], employing different boundary conditions [12], [21], and proposing new mathematical perspectives [22][23][24][25]. In [18], near-zero-index objects involved in electromagnetic problems are investigated through a novel surface integral equation formulation.…”

Section: Introductionmentioning

confidence: 99%

A fundamental approach: E-polarized electromagnetic wave diffraction by two dimensional arbitrary-shaped objects with impedance boundary condition

Tabatadze

Karaçuha

Zaridze

et al. 2022

Journal of Electrical Engineering

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In the present study, a new methodology in computational electromagnetics is developed for two-dimensional arbitrarily-shaped objects with impedance boundary conditions. The proposed approach investigates the E-polarized electromagnetic diffraction by a two-dimensional object with the Leontovich boundary condition. The scattered electric and magnetic fields are expressed as the convolution integral of the corresponding Green’s function and the current induced on the obstacle surface. After obtaining integral equations by applying the boundary condition, the integral equations are solved as in the case of the method of auxiliary sources (MAS) which is a well-known method in computational electrodynamics. The results are compared with first, different methods such as the method of moments (MoM), orthogonal polynomials (OP), and second, different boundary conditions such as Dirichlet, Neumann, and fractional boundary conditions. Some results are also obtained for the different shape scatterers at some values of the surface impedance.

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Wave diffraction by a perfect electromagnetic conductor wedge

Cited by 10 publications

References 17 publications

Wave Scattering by a Perfect Electromagnetic Conductor Wedge Residing Between Isorefractive Media

Wave Scattering by a Perfect Electromagnetic Conductor Wedge Residing Between Isorefractive Media

Electromagnetic scattering of H‐polarised cylindrical wave by a double‐sided impedance circular strip

A fundamental approach: E-polarized electromagnetic wave diffraction by two dimensional arbitrary-shaped objects with impedance boundary condition

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