Перегляд за автором "Doroshenko, V. A."
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Публікація Diffraction of electromagnetic waves on an imperfectly conducting conical structure of a partial shape(РАН, 2006) Doroshenko, V. A.; Kravchenko, V. F.; Pustovoit, V. I.In this paper, we propose equivalent impedance-type boundary conditions on the surface of a thin conical surface taking into account its curvature; they are obtained from the exact solution for a thick conical grating.Публікація Diffraction of the plane electromagnetic wave on the structure incorporating two coaxial unclosed cones(IEEE, 2007) Doroshenko, V. A.; Semenova, E. K.; Doroshenko, Ya. V.; Ruzhytskya, S. V.The paper is developed to the investigation of plane wave diffraction on the 3D composite unclosed conical structure consisting of two cones with longitudinal slots. The rigorous analytical-numerical approach, based on the Kontorovich-Lebedev integral transform and the semi-inversion method, has been developed and applied to solve this problem.Публікація Electromagnetic excitation of PEC slotted cones by elementary radial dipoles – a semi-inversion analysis(IEEE, 2008) Semenova, E. K.; Doroshenko, V. A.This paper presents a novel method that is based on the use of the Kontorovich-Lebedev integral transform and the semi-inversion technique, developed for building the efficient and accurate numerical solutions to the boundary-value problems of electromagnetic wave scattering by 3D coaxial slotted cones.Публікація Electromagnetic wave diffraction by a cone with longitudinal slots and a solid conic screen inside(IEEE, 2003) Doroshenko, V. A.; Semenova, E. K.A numerical-analytical solution of the problem of excitation of an unlimited perfectly conducting biconical surface is considered. Surface consists of both a cone with periodical longitudinal slots and an internal solid conical screen. The effects of slots and solid cone on the Fourier coefficient of the electromagnetic field components and the scattering patterns are discussed. The obtained results are in good agreement with previously recognized ones for solid bicone structure.Публікація Electromagnetic waves diffraction a system of open cones in time domain(IEEE, 2010) Doroshenko, V. A.; Artjukh, A. V.; Parhomenko, V. A.A model problem of electromagnetic waves diffraction on an equalperiodical multilayered perfectly conducting conical grating is considered. The solution method is based on using the Meler-Fock integral transforms and the method of the coupling problem. This allows both analytical and numerical solutions obtaining.Публікація Excitation of a conical slot antenna(IEEE, 2001) Doroshenko, V. A.; Evsyukova, E. K.; Kravchenko, V. F.A boundary-value problem is considered on the scattering of the field of a radial magnetic dipole by a semi-infinite perfectly conducting with periodic longitudinal slots. It is shown that the solution of this problem is equivalent to the solution of a singular integral equation with a Cauchy-type kernel. Numerical results are presented for a cone with a single slot. The Fourier coefficients of electromagnetic field components are investigated as functions of the parameters of a cone.Публікація Mathematical model of a loaded conical antenna excitation(IEEE, 2009) Doroshenko, V. A.; Shimuk, Y. D.Electromagnetic wave scattering problems for the imperfectly cones are considered. Boundary impedance including the cone curvature parameters are used. Analytical solutions for some partial cases are obtained. The surface curvature parameters effects on the problems solutions are studied.Публікація Meler-Fock transformations in problems of wave diffraction on unclosed structures in the time region(IEEE, 2005) Doroshenko, V. A.; Kravchenko, V. F.; Pustovoit, V. I.In the present paper, we propose and substantiate a novel method for solving boundary value problems for the wave equation in wedge-like and conic regions.Публікація Modeling of electromagnetic scattering by a slot cone reflector(IEEE, 2000) Doroshenko, V. A.The problem of electromagnetism plane wave diffraction on an infinite perfectly conducting circular cone with periodical longitudinal slots is considered. This cone structure is a model of a slot cone antenna and reflector. The plane wave propagates along the cone axis. The method for solving electrodynamics boundary problem is based on using the Kontorovich-Lebedev integral transforms and the Rieman-Hilbert problem method.Публікація Nonstationary excitation of a cone with slots(IEEE, 2000) Doroshenko, V. A.The time-dependent Green’s function boundary problem for a semi-infinite circular perfectly conducting cone with periodical longitudinal slots is considered. This geometry can be regarded as a model of conical slotted antennas. The solution method employs Laplace inversion, the Kontorovich-Lebedev integral transforms and the Riemann-Hilbert method.Публікація Scattering of the field of an electric dipole by a conic structure with longitudinal slots(IEEE, 2000) Doroshenko, V. A.; Kravchenko, V. F.The excitation of a semi-infinite perfectly conducting infinitely thin circular cone with semi-infinite slots by a radial electric dipole is investigated. The slots are cut along the cone generatrices and equally spaced. The problem is solved based on the Kontorovich-Lebedev integral transform and the Riemann-Hilbert problem method. Analytic solutions are obtained for a semitransparent cone and a cone with narrow slots. The effect of slots on the field structure, polarization, and behavior in the proximity of the cone vertex is studied.Публікація Solving the wave equation for a slotted cone placed on an impedance plane(IEEE, 2001) Doroshenko, V. A.Modeling a problem of nonstationary electromagnetic wave diffraction on an infinite circular slotted on an impedance plane is considered. The solution method is based on using the Laplace inversion, the Kontorovich-Lebedev transforms, and the Riemann-Hilbert method. Representations for the Green’s function are obtained.Публікація The scattering of plane electromagnetic waves from a cone with longitudinal slots(IEEE, 2001) Doroshenko, V. A.; Kravchenko, V. F.The paper deals with the boundary-value problem of scattering of a plane electromagnetic wave from a semi-infinite ideally conducting cone with longitudinal slots cut at regular intervals. The problem is solved using the Kontorovich-Lebedev integral transformation and the semi-inverse method. In particular cases of a semitransparent cone, a single narrow conical ribbon, and a cone with narrow slot, an analytical solution is derived that is used to study the structure and polarization of the scattered field, as well as the field behavior in the vicinity of the cone vertex.Публікація Unsteady diffraction by an nonclosed cone(IEEE, 2001) Doroshenko, V. A.; Kravchenko, V. F.In this paper, we pioneer the presentation of an algorithm for constructing an unsteady Green’s function of a cone with longitudinal slots.Публікація Wave scattering on a cone surface with the impedance-type boundary conditions(ХНУРЭ, 2006) Doroshenko, V. A.The objective of the present paper is to develop the method based on attraction of the integral transformations technique and method of semi-inversion for solving the problems of wave scattering upon an open-end cone, on the surface of which the impedance-type boundary conditions are set.