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Information × Registration Number 0302U001573, 0100U003346 , R & D reports Title Investigation of physical peculiarities and mathematical simulating the radiating systems based on ireegular and nonatationar diffraction structures popup.stage_title Розробка математичної моделі, алгоритму і ком'ютерної програми розрахунку характеристик криволінійної щілини. Дослідження групових щілин у напівнескінченому хвилеводі і резонаторі. Аналіз фізичних закономірностей формування оптимальних діаграм спрямованості нерегулярних антенних решіток з високими енергетичними характеристиками Head Gorobets' M.M.,Katrych V.O., Registration Date 28-03-2002 Organization Kharkov National University named after V.N.Karazin popup.description2 The investigations object is the electromagnetic fields, diffraction phenomenon and wave processes in case of waveguide waves scattering by both the single slot irregularity and an array of ones. The goal of investigation is developing and making more precise the calculation techniques, mathematical models and computer programs for calculation of characteristics of the linear, curvilinear, longitudinal regular and irregular slots and the arrays of ones. The investigation technique - theoretical and computer analysis, experiment. For scalar Green's function the analytical conceptions containing finite sums of the oscillating function and integrals, for which there are the numerical calculation methods, was obtained. The asymptotical solution of the integral equation relatively magnetic current in the slot radiators and coupling apertures was founded. The parameters of the group radiator which has shape of two parallel nearlocated longitudinal slots cuton the wide wall of the rectangular waveguide was investigated. The solution of the boundary problem of the curvilinear slot radiation under the approximation of quasistationary field across slot when electromagnetic field in the slot has only transverse polarization was obtained. Such problem was also solved for the case of thin waveguide wall. The possibility of optimizing the irregular corner antenna arrays of the travelling wave was investigated. The problem of synthesis of the linear antenna arrays with guided pattern was numerically investigated with multiparametric regularization method. The technique of the choice of the location, amplitude and phase of the exciting the two elements of the antenna array for decreasing the near side lobes of the linear antenna arrays was proposed. Product Description popup.authors popup.nrat_date 2020-04-02 Close