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Information × Registration Number 0218U001098, 0117U004848 , R & D reports Title Electrodynamic characteristics of multifunctional radiating structures: radiation, scattering, diffraction, impedance coating, edge effects popup.stage_title Head Katrich Viktor, Registration Date 08-02-2018 Organization Kharkov National University named after V.N. Karazin popup.description2 The object of research are processes of forming of electromagnetic fields by complex electrodynamic structures that contain multi-element, multiresonance system components (including impedance surfaces) with different geometrical and electrophysical parameters. The aim of the stage is to develop analytical and numerical methods for solving boundary value problems of electrodynamics and constructing of mathematical models of radiating structures with the elements of electric and magnetic types located in electrodynamic volumes with impedance surfaces, coaxial lines and waveguide transmission lines with a complicated cross-sectional shape. In this work, the problems of scattering and radiation of proper waves of waveguides of complex cross-section with arbitrary piecewise coordinate boundaries by slot radiators were solved, the Green's functions of the half-space over the impedance screen are constructed and the problem of the radiation by a slot into a half-space above an impedance infinite screen is solved for the general case of the slot excitation regime and the type of the internal region. Mathematical models are constructed and electrodynamic characteristics of multi-element equidistant and non-equidistant arc-slots systems in the coaxial line screen are investigated. Mathematical models of a vertical half-wave impedance vibrator and an impedance monopole located above an ideally conducting rectangular screen of finite dimensions are constructed and the effect of the dimensions and shape of a flat screen on the directivity characteristics and polarization characteristics of the radiators is investigated Product Description popup.authors Єлісєєва Н. Бердник С. Кириленко А. Лященко В. Медвєдєв М. Нестеренко М. Пєнкін Ю. Пшенична С. Стешенко С. popup.nrat_date 2020-04-02 Close