Search academic texts

Information × Registration Number 0219U003673, 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 07-02-2019 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, multi-resonance 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 in complex conjunctions of waveguides. In this work, the mathematical models are constructed, algorithms and calculation programs are developed, and electrodynamic characteristics of slot radiators located in complex conjunctions of waveguides, slot radiators covered by a thin permeable impedance membrane, multi-element equidistant and non-equidistant homogeneous and heterogeneous circular slot systems in the coaxial line with different size radiators are investigated. The principles of design of rebuilt compact rotators of the polarization plane based on two-layer flat-chiral multi-slotted diaphragms are worked out. The waveguide method for determining the value of the impedance of thin films at high frequencies is proposed. The conditions of optimal synthesis of circular polarized radiation of angular mirror structures of finite dimensions excited by an arbitrarily oriented impedance vibrator are determined. Product Description popup.authors Єлісєєва Н. Бердник С. Кириленко А. Мєдвєдєв М. Нестеренко М. Пєнкін Ю. Стешенко С. popup.nrat_date 2020-04-02 Close