M.Yu. Zvezdina, Yu. A. Zvezdina, S. A. Sil-nitsky

Designing the adaptive antenna arrays with prior signal processing device used for signal reception stability increment under the conditions of noise exposure makes the research of electrodynamic effects effect on the performance characteristics of the device. One of the main effects is the radiators mutual coupling in the aperture. The relations for the amplitude-phase distributions in the aperture of the two types of radiators that allow obtaining both "zero" and maximum of the directive pattern are given in the article. A cofactor allowing to consider the mutual coupling value of the radiators is selected and excluded in the relations. The research results of radiators mutual coupling influence on the signal suppression level in the first type sub arrays for two cases of the excited element positions are given. In the first case the excited element was situated in the sub array phase center, in the second one - it is shifted from that point. The loss estimation for the signal-noise ratio for the cases of not considering the electrodynamic effects when scanning the main lobe in the adaptive antenna with prior signal processing was made.