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.

Browse

Filters

20093

Settings

Author: search.filters.author.Kravchenko, V. F.Has files: Yes

Search Results

Now showing 1 - 3 of 3
  • Thumbnail Image
    Item
    Kravchenko-Rvachov probability distribution in the problems of analysis and synthesis for linear arrays
    (Видавництво Національного університету "Львівська політехніка", 2009) Kravchenko, V. F.; Kravchenko, O. V.; Safin, A. R.
    For the first time an applications of probability densities constructed on the atomic functions (AF) theory for analysis and synthesis for linear arrays are considered. Average characteristics of linear arrays with random phase errors are studied such as average directional diagram (DD), average directive gain (DG), beam width (BW), and side lobe level. Introduced errors correlation coefficient based on AF and the law of errors distribution is Kravchenko-Rvachov distribution. Correlation field characteristics are constructed for the cases when the probability densities of envelopes DD are Kravchenko-Rayleigh and Kravchenko-Gauss distributions. In this case a far-field boundary of antenna with random errors in gain-phase source distributions is defined. Thus a far-field is defined for two characteristics of antennas which are average DD and correlation fluctuations function of complex field An executed numerical experiment for the Gaussian and Kravchenko-Rvachov distribution as well as Kravchenko-Gauss has shown efficiency of introduced approach.
  • Thumbnail Image
    Item
    Synthesis of 2D directional diagrams of antennas with arbitrary aperture based on atomic and R-functions
    (Видавництво Національного університету "Львівська політехніка", 2009) Kravchenko, V. F.; Kravchenko, O. V.; Safin, A. R.
    In this report problems of synthesis 2D directional diagram (DD) of antennas with arbitrary apertures on atomic and R-functions (V.L. Rvachov functions) are considered. A new approach for 2D DD synthesis based on generalized N-th dimensional Kravchenko-Kotel’nikov Theorems is offered. The theory of R-functions allows edge effects are appear in singularity points by synthesis and analysis of 2D antenna arrays with arbitrary forms. In this work was carried out comparison with well-known the following methods: Whittaker-Kotel’nikov-Shannon – series expansion, Fourier – series expansion, Chebyshev – series with series generalized Kravchenko-Kotel’nikov-Levitan.
  • Thumbnail Image
    Item
    Atomic and R-functions in radiophysical applications
    (Видавництво Національного університету "Львівська політехніка", 2009) Kravchenko, V. F.
    This review consist of two parts. First part of review concerned with atomic functions theory and it’s applications in digital signal processing problems, antennas synthesis and sampling theorem. In second part R-functions theory and WA-system functions are considered in applications to boundary-value problems of elliptic type.