E.V. Volkhonskaya, E.V. Korotey, D.V. Kuzhekin

The estimate of the influence of multiple-element antenna elements and exciting feeder impedances inequality on amplitude-phase distribution was made in the paper. A model of complex circuit with distributed parameters was chosen under the character of multiple-element antenna model, where every segment is a section of the homogeneous long line with complex impedance at the end. The recurring equation for the complex amplitude of voltage at the both ends of every homogeneous long line was derived relying on equations of the long line in exponential form. On example of modeling studies log dipole antenna a combined numeric solution of the recurring equation and contour equations generated in accordance with method of induced E.M.F. allowed to plot the amplitude-phase distribution on the different operating frequencies relevant to resonant wave-length of antenna elements. The analysis of plotted distributions allowed to conclude about shift of maximum of the amplitude distribution on the element next to «resonant» one because of the influence of multiple-element antenna elements and exciting feeder impedances inequality. Allowing for this factor a wideness of antenna active area remains invariable within frequency range and terminal current amplitude decreases within active area goes to the left and to the right from resonant element. The comparison of the obtained results and the results of modeling by methods of Petrov B.M. and Kocherzhevskiy G.N shows that accounting of antenna elements and feeder impedance inequality allows to make more adequate estimate of the multiple-element antenna basic characteristics.