Теорія та техніка антен (ICATT 2009). – 2009 р.

Permanent URI for this collectionhttps://ena.lpnu.ua/handle/ntb/3740

Матеріали 7-ої Міжнародної конференції

У книзі зібрано матеріали конференції, присвяченої проблемам у галузі розробки і впровадження антен.

Теорія та техніка антен = Antenna theory and techniques : матеріали 7-ої Міжнародної конференції, 9–12 червня 2009 року, Львів, Україна. – Львів : Видавництво Національного університету "Львівська політехніка", 2009. – 400 с. : іл.

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Author: search.filters.author.Gorobets, N. N.Has files: Yes

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    Curved radiators in the near-field and far-field zones of observation
    (Видавництво Національного університету "Львівська політехніка", 2009) Gorobets, N. N.; Trivaylo, A. V.
    In approximation of the given current distribution it has been suggested a solution considering the influence of the circular loop antenna curvature and elementary radiator curvature upon their directional characteristics. On the basis of potential Hertz technique the expressions for calculating al the components of electromagnetic radiation fields of wire loop antennas, stimulated by the running wave of the current, and curved dipole in Spherical and Decart coordinate systems in the near-field zone have been derived. It has been shown that wave processes near by the examined radiators are distinguished by great gradients of amplitudes of the electromagnetic fields.
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    Radiation characteristics of a wire antenna with finite size plane and corner screens
    (Видавництво Національного університету "Львівська політехніка", 2009) Yeliseyeva, N. P.; Gorobets, N. N.
    Based on the uniform geometric diffraction theory method the asymptotic solutions are obtained for 3-D problems of diffraction of the fields radiated by the arbitrary oriented electric dipole Hertz and half-wave resonant vibrator on the thin ideally conducting plane screen of the rectangular form and on the finite size corner reflectors of a various configuration. The carried out experiments confirm the accuracy of calculated radiation patterns of analyzed systems. There are also calculated the optimal tilt angles, positions of the vibrator, placed above the rectangular screen, and the reflector dimensions for producing the circularly polarized radiation in the main observation planes with maximum directive gains.