D. D. Gabrielyan1, M. Yu. Zvezdina2, O. A. Lavrentiev3, S. V. Rudy4, V. V. Kharchenko5, D. V. Kharchenko6
1, 2 FSUE “Rostov-on-Don Research Institute of Radio Communications” (Rostov-on-Don, Russia)
3 Branch of the Main Radio Frequency Center in the Southern and North Caucasian Federal Districts
(Rostov-on-Don, Russia)
4–6 Air Force Academy named after professor N.E. Zhukovsky and Y.A. Gagarin (Voronezh, Russia)

For radio complexes with multiband (combined) antenna arrays, the effects of mutual coupling of emitters, including those of different frequency ranges, have a significant impact on the main characteristics of the antenna system. In this regard, the study of these issues is of undoubted theoretical and practical significance. The paper considers a technique for calculating the intrinsic and mutual admittance of longitudinal slot radiators operating in different frequency ranges and located on a cylindrical conductive surface.

The aim of the article is to take into account the peculiarities of calculating the mutual connection of longitudinal slot radiators in multi-band cylindrical antenna arrays.

The analysis of existing methods for calculating the mutual influence of emitters and their refinement in relation to non-planar load-bearing structures made it possible to formulate a technique for determining the intrinsic and mutual admittance of emitters located on a cylindrical surface, taking into account the curvature of the surface.

The research results presented in the paper show the following:

the use of a rigorous decision on the radiation of a longitudinal slot radiator on the side surface of a circular cylinder makes it possible to reduce the calculation of the active component of the intrinsic and mutual admittance of longitudinal slot radiators of various ranges to the calculation of a single integral that does not require large computational costs;

the integral in the frequency domain necessary to determine the reactive component of mutual admittance exists in the sense of the principal value according to Cauchy, and the upper limit of integration can be chosen equal to three times the value of the frequency for which the mutual admittance is determined.

The technique has been developed for estimating and calculating the intrinsic and mutual admittance of longitudinal slot radiators in a multiband cylindrical antenna array based on their radiation patterns, which makes it possible to take into account the curvature of the carrier surface when estimating the mutual influence of radiators, unlike similar solutions for flat antenna arrays.

Gabrielyan D.D., Zvezdina M.Yu., Lavrentiev O.A., Rudy S.V., Kharchenko V.V., Kharchenko D.V. Calculation technique of intrinsic and mutual admittance of longitudinal slot radiators on a circular metal cylinder based on their radiation patterns. Antennas. 2022. № 2. P. 5–11. DOI: https://doi.org/10.18127/j03209601-202202-01 (in Russian)

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