Open AccessInvestigation of the Width of the Dips in the Upper and Lower Half-Spaces of the APAA Radiation Pattern
Author(s) -
O. A. Kurdyumov,
V. E. Sagach
Publication year - 2022
Publication title -
raketno-kosmičeskoe priborostroenie i informacionnye sistemy
Language(s) - English
Resource type - Journals
eISSN - 2587-9057
pISSN - 2409-0239
DOI - 10.30894/issn2409-0239.2022.9.1.79.84
Subject(s) - radiation , radiation pattern , amplitude , polarization (electrochemistry) , optics , physics , full width at half maximum , materials science , computational physics , antenna (radio) , telecommunications , chemistry , computer science
In the article, arrays of two and three microstrip emitters of elliptical polarization are studied by the methods of electrodynamic analysis. Formulas are obtained for determining the corrections to the amplitudes and phases of the array elements, which ensure the presence of dips in the resulting radiation pattern. The dependence of the width of the dip near zero of the radiation pattern on the number of elements in the array, its pitch, and design has been studied. It is shown that at a fixed dip depth exceeding minus 100 dB, its width slightly depends on the array type and dip orientation in the upper or lower hemisphere of the diagram. At the same time, at different depths of the dip, its width can vary significantly and depends on the accuracy of compliance with the amplitude-phase relationships that provide zeros of the radiation pattern.