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Information × Registration Number 0217U001258, 0116U000811 , R & D reports Title Analysis and synthesis of the given spatial distribution of the antenna arrays electromagnetic radiation at arbitrary distances popup.stage_title Head Gorobets Nikolay Nikolayevish, Registration Date 02-02-2017 Organization Kharkov National University named after V.N. Karazin popup.description2 Object of research are electromagnetic fields and waves in the near, intermediate and far observation zones of elementary electric and magnetic Hertz dipoles, Huygens radiators, open end waveguide antennas and horn antennas. Aim of the research is to getting physical patterns of radiation wave processes of electromagnetic waves by near-omnidirectional radiators in the near, intermediate and far-observation zones. Methods of research are theoretical research, computer analysis and experimental studies. It has been resolved the external vector electrodynamic problem of radiation of elementary and near-omnidirectional radiators at arbitrary small distances from the source. Solutions and mathematical models has been obtained in analytical form and are suitable for computer analysis of amplitude, phase and polarization patterns in the near, intermediate and far zones. Problems has been solved for electrical and magnetic Hertz dipoles, wire and slot radiators of finite length with advance known amplitude and phase distributions, Huygens radiators, waveguide and horn radiators with an arbitrary radiating aperture, wire dipole radiators with a flat-screen of finite size. Directional factors of dipole and waveguide antenna arrays with an arbitrary distance between emitters has been explored theoretically. It has been found the effect of "blinding" of not phased antenna arrays at larger distances between emitters than wavelength. It has been proved experimentally the possibility of matching antenna with the space and working frequency adjustment of dipole and loop wire antennas by placing into its near zone in the area between the dipole and the screen the wire- or disk-inhomogeneity. Product Description popup.authors Є. Махов А. Лебедєв Г. Булгакова Н. Єлисєєва Н. Блинова О. Горобець О. Овсяннікова popup.nrat_date 2020-04-02 Close