Перегляд за автором "Kravchenko, V. F."
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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 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 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 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 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.