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Information × Registration Number 0215U001105, 0112U000545 , R & D reports Title The electromagnetic field near the radiating systems of large popup.stage_title Head Gorobets Mikola, Registration Date 20-01-2015 Organization Kharkov National University named after V.N. Karazin popup.description2 The object of study - electromagnetic fields and waves at a finite distance from the radiating systems of large electrical size. The purpose of research - development of theory and numerical analysis methods for solving the problem of radiation of electromagnetic waves basic types of antennas large electrical size of the near, intermediate and far zones of observation. Methods of research - theoretical studies, numerical analysis, experiment. Solved external problems of electrodynamics of radiation aperture antennas of arbitrary size in the near, intermediate and far zones of observation. The problem of radiation reflector antennas large electrical current size is solved by physical optics theory of diffraction. The problem of radiation waveguide and horn radiators solved in the near field aperture method of geometrical optics. The problem of radiation wire (dipole) antenna with a screen of finite dimensions is solved by the method of geometrical theory of diffraction. Studied wave processes in the near, intermediate and far-field of the antenna. It is shown that the searchlight beam formed in the proximal part and in the intermediate area of the aperture when the sizes of the radiating antenna of large aperture. The phenomenon of the formation of a locally plane homogeneous electromagnetic wave in the near field aperture antennas with the size of the aperture greater. Proved the possibility of the synthesis of radiating systems, providing close to a constant value of the power of the electromagnetic field in a given volume or in a limited area. Studied wave processes in aperture antennas focused in the near zone. The effects of the focusing of electromagnetic waves in a biaxial dielectric ellipsoid. The characteristics of directional antenna arrays with sparse screens. Product Description popup.authors Єлізаренко А. Єлисєєва Н. Булгакова Г. Гомозов А. Горобець В. Горобець О. Горобець Ю. Кийко В. Овсяннікова О. Стасюк Н. Шишкова Г. popup.nrat_date 2020-04-02 Close