The rigorous solution of the scattering problem for a finite cone embedded in a dielectric sphere surrounded by the dielectric medium
Abstract Wave scattering from a finite hollow cone with perfectly conducting boundaries embedded in a dielectric sphere is considered. The structure is excited axially symmetrically by the radial electric dipole. The scattering problem is formulated in the spherical coordinate system as the boundary...
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| Format: | Article |
| Language: | English |
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Wiley
2021-08-01
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| Series: | IET Microwaves, Antennas & Propagation |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/mia2.12119 |
| _version_ | 1798005013305360384 |
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| author | Dozyslav B. Kuryliak |
| author_facet | Dozyslav B. Kuryliak |
| author_sort | Dozyslav B. Kuryliak |
| collection | DOAJ |
| description | Abstract Wave scattering from a finite hollow cone with perfectly conducting boundaries embedded in a dielectric sphere is considered. The structure is excited axially symmetrically by the radial electric dipole. The scattering problem is formulated in the spherical coordinate system as the boundary value problem for the Helmholtz equation. The diffracted field is given by expansion in the series of eigenfunctions. Owing to the enforcement of the conditions of continuity together with the orthogonality properties of the Legendre functions the diffraction problem is reduced to infinite system of linear algebraic equations (ISLAE) of the first kind. The usage of the analytical regularization approach transforms the ISLAE of the first kind to the second one and allows one to justify the truncation method for obtaining the numerical solution in the required class of sequences. This system is proved to be regularized by a pair of operators, which consist of the convolution type operator and the corresponding inverse one. The inverse operator is found analytically using the factorization technique. The numerical examples are presented. The static and the low‐frequency approximations as well as the transition to the limiting case when the cone degenerates into the disc are considered. |
| first_indexed | 2024-04-11T12:32:23Z |
| format | Article |
| id | doaj.art-88a94c9925f44f1287834e5260c7257c |
| institution | Directory Open Access Journal |
| issn | 1751-8725 1751-8733 |
| language | English |
| last_indexed | 2024-04-11T12:32:23Z |
| publishDate | 2021-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Microwaves, Antennas & Propagation |
| spelling | doaj.art-88a94c9925f44f1287834e5260c7257c2022-12-22T04:23:43ZengWileyIET Microwaves, Antennas & Propagation1751-87251751-87332021-08-0115101181119310.1049/mia2.12119The rigorous solution of the scattering problem for a finite cone embedded in a dielectric sphere surrounded by the dielectric mediumDozyslav B. Kuryliak0Department of the Theory of Wave Processes and Optical Systems of Diagnostics Karpenko Physico‐Mechanical Institute of the NAS of Ukraine Lviv UkraineAbstract Wave scattering from a finite hollow cone with perfectly conducting boundaries embedded in a dielectric sphere is considered. The structure is excited axially symmetrically by the radial electric dipole. The scattering problem is formulated in the spherical coordinate system as the boundary value problem for the Helmholtz equation. The diffracted field is given by expansion in the series of eigenfunctions. Owing to the enforcement of the conditions of continuity together with the orthogonality properties of the Legendre functions the diffraction problem is reduced to infinite system of linear algebraic equations (ISLAE) of the first kind. The usage of the analytical regularization approach transforms the ISLAE of the first kind to the second one and allows one to justify the truncation method for obtaining the numerical solution in the required class of sequences. This system is proved to be regularized by a pair of operators, which consist of the convolution type operator and the corresponding inverse one. The inverse operator is found analytically using the factorization technique. The numerical examples are presented. The static and the low‐frequency approximations as well as the transition to the limiting case when the cone degenerates into the disc are considered.https://doi.org/10.1049/mia2.12119boundary‐value problemseigenvalues and eigenfunctionselectromagnetic wave diffractionelectromagnetic wave scatteringHelmholtz equationslinear algebra |
| spellingShingle | Dozyslav B. Kuryliak The rigorous solution of the scattering problem for a finite cone embedded in a dielectric sphere surrounded by the dielectric medium IET Microwaves, Antennas & Propagation boundary‐value problems eigenvalues and eigenfunctions electromagnetic wave diffraction electromagnetic wave scattering Helmholtz equations linear algebra |
| title | The rigorous solution of the scattering problem for a finite cone embedded in a dielectric sphere surrounded by the dielectric medium |
| title_full | The rigorous solution of the scattering problem for a finite cone embedded in a dielectric sphere surrounded by the dielectric medium |
| title_fullStr | The rigorous solution of the scattering problem for a finite cone embedded in a dielectric sphere surrounded by the dielectric medium |
| title_full_unstemmed | The rigorous solution of the scattering problem for a finite cone embedded in a dielectric sphere surrounded by the dielectric medium |
| title_short | The rigorous solution of the scattering problem for a finite cone embedded in a dielectric sphere surrounded by the dielectric medium |
| title_sort | rigorous solution of the scattering problem for a finite cone embedded in a dielectric sphere surrounded by the dielectric medium |
| topic | boundary‐value problems eigenvalues and eigenfunctions electromagnetic wave diffraction electromagnetic wave scattering Helmholtz equations linear algebra |
| url | https://doi.org/10.1049/mia2.12119 |
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