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Information × Registration Number 0218U001532, 0116U000814 , R & D reports Title The formation of harmonic and transient electromagnetic fields by the multielement multiresonant structures of electric and magnetic radiators using the metal-dielectric inclusions. popup.stage_title Head Катрич Виктор Александрович, Доктор фізико-математичних наук Registration Date 24-04-2018 Organization Kharkov National University named after V.N. Karazin popup.description2 The report: 67 p., 1 table, 23 fig., 56 sources. ELECTROMAGNETIC FIELDS, IMPEDANCE VIBRATOR, SURFACE IMPEDANCE, ANTENNA ARRAY, NON-STATIONARY FIELD, EVOLUTION EQUATIONS. The object of research are processes of forming of electromagnetic fields with defined temporal, spatial, energy and polarization characteristics by complex electrodynamic structures that contain multi-element, multiresonance system components (including impedance surfaces) with different geometrical, electrophysical parameters and arbitrary topology of radiating elements. The aim is to develop numerical and analytical methods for solving boundary value problems of electrodynamics, constructing of mathematical models of radiating structures with impedance vibrators and slot elements located in the waveguides and electrodynamic volumes with perfect conductive and impedance surfaces, carrying out multi-parameter simulation concerning determination of the physical properties of the diffraction fields of structures for the creation of SHF and EHF radiating devices with new and advanced features for different applications. In the work the mathematical models of electrodynamic structures effective for application in computer-aided design systems are constructed These are mathematical models of slot spherical antenna with magneto-dielectric coating (including metamaterial coating), arc and annular slots in the coaxial line screen, combined slоt-vibrator emitter, slоt radiator in the end of a semi-infinite waveguide with dielectric insertion of finite length. Numerical investigation was conducted to reveal new physical principles of formation of electromagnetic fields by the structures in electrodynamic volumes with perfectly conducting and impedance boundaries. A physics-mathematical model of a real source of nonstationary current was constructed and a solution of the problem of radiation of a linear nonstationary current was obtained. Conditions of reception of the report: under the contract, 61022, V.N. Karazin Kharkiv National University, 4 Svobody Sq., Kharkiv, Ukraine Product Description popup.authors В. Лященко Л. Яцук М. Медвєдєв М. Нестеренко Н. Блинова О. Думін С. Бердник Ю. Пєнкін popup.nrat_date 2020-04-02 Close