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Information × Registration Number 0220U101123, 0117U004848 , R & D reports Title Electrodynamic characteristics of multifunctional radiating structures: radiation, scattering, diffraction, impedance coating, edge effects popup.stage_title Head Katrych Viktor O., Registration Date 03-02-2020 Organization V.N. Karazin Kharkiv National University popup.description2  The object of study is the processes of electromagnetic fields formation by complex electrodynamic structures containing multi-element, multi-resonant system components (in particular, impedance ones) with different geometrical and electrophysical parameters. The aim of the work is the development of numerical and analytical methods for solving boundary value problems of electrodynamics and the creation of mathematical models of radiating structures with the latest functional properties consisting of electric and magnetic type elements, located in electrodynamic volumes with impedance surfaces, coaxial lines, and waveguides of complex cross-sections. Several fundamental problems of electromagnetic field theory and applied electrodynamics are solved in the present work. These solutions are aimed at creating the newest geometrically complex, multi-component, multi-resonant radiation structures for the formation of electromagnetic fields with given spatial, energy, and polarization characteristics. The base for the creation of such structures is the waveguides with impedance rods, slot diaphragms of complex cross-sectional shape, multi-element systems, with elements of magnetic and electrical types (in particular, with impedance surfaces), and structures that are having control elements for forming the radiated fields in a half-space above the impedance surface. The development of an asymptotic field diffraction theory of arbitrarily oriented impedance vibrator radiators on perfectly conductive shields of finite sizes with flat or wedge fragments is also one of the important results of investigations. The solutions of the latest boundary problems of electrodynamics were obtained, the numerical and analytical methods of multivariate analysis of electromagnetic fields in closed and open radiating structures were developed, and mathematical models of radiating structures were constructed. Product Description popup.authors Elisieieva Nadiia P. Berdnik Sergey L. Kirilenko Anatoliy O. Medvedev Nikolay V. Nesterenko Mikhail V. Penkin Yuriy M. Pshenichnaya Svetlana V. Steshenko Sergii O. popup.nrat_date 2020-04-02 Close