Search academic texts

Information × Registration Number 0225U002343, (0122U001427) , R & D reports Title The development of theory and methods of modeling multifunctional radiating structures with coordinate and piecewise coordinate boundaries in a cylindrical coordinate system. popup.stage_title Комбіновані випромінювачі та антенні решітки на базі коаксіального хвилеводу. Head Medvedev Mykola V., Кандидат фізико-математичних наук Registration Date 04-03-2025 Organization V.N. Karazin Kharkiv National University popup.description1 The aim of the research is a further development of the fundamental principles of electromagnetic field theory and formation of fields by their electrodynamic characteristics, development of numerical-analytical methods for solving boundary value problems of electrodynamics for the modern functional properties of radiating structures (previously not studied in the literature) located in coaxial and round waveguide paths; construction on their basis of mathematical models of coaxial-slot radiating structures with annular and arc slot elements, group radiators, leaky-wave antenna arrays, ultra-wideband and multi-frequency radiating structures, radiators of circular polarization; effective multiparametric modeling to determine the physical properties of diffraction fields of structures in all observation areas, creating a software for analysis, design, and optimization of new types of radiating structures of multifunctional electronic systems for various applications (including military, industrial and biomedical purposes). popup.description2  The aim of the work is further development of the fundamental principles of electromagnetic field theory and the formation of fields according to their electrodynamic characteristics. The development of numerical and analytical methods for solving electrodynamics border problems for the latest functional properties of radiating structures (not previously studied in the literature), located in coaxial and circular waveguide paths for further analysis, design, optimization and application of new types of radiating structures for multifunctional radioelectronic systems for various fields of application (in particular, military, industrial and biomedical purposes). Mathematical models of combined multi-element, multi-resonant slot radiators; multi-element antenna arrays of arc and ring slot radiators, multi-element traveling wave radiators based on a coaxial waveguide are constructed. Expressions are provided for determining the main frequency-energy and frequency-spatial characteristics of the radiators. The scattering characteristics of waveguide-slot radiating structures based on a circular waveguide and waveguides with a complex cross-section depending on the polarization of the exciting wave are investigated. Computer modeling and optimization of a polarization plane rotator in a circular waveguide have been carried out. Designs of transitions from a circular waveguide to a waveguide of complex cross-section with piecewise coordinate boundaries in a cylindrical coordinate system have been proposed to coordinate the connection of polarization plane rotators with radiating structures. Multi-parameter studies were conducted to determine the physical features and regularities of the formation of electromagnetic fields and to control their main characteristics. Product Description popup.authors Berdnyk Kateryna V. Berdnyk Serhii L. Blynova Nataliia K. Katrych Viktor O. Kyiko Viktor I. Kyrylenko Anatolii O. Kozheshkurt Valentyn O. Masalov Serhii O. Pshenychna Svitlana V. Steshenko Serhii O. popup.nrat_date 2025-03-04 Close