I.Y. Kolchugin - Deputy Head of Department, JSC «Concern «Automation». E-mail: kiy@oao-avtomatika.ru

Promising option for upgrading the radiating antenna-feeder systems is the transition to the use of ring antenna arrays. They can provide a rapid formation of the directional characteristics in any azimuthal direction, as well as the formation of the required type of polarization of the emitted waves. To operate over a wide frequency range is provided the use of the two antenna arrays, each of which maintains its subband. And they are combined into a single double-ring structure. Proposed to use part of the antenna system biorthogonal vibrators, consisting of flat horizontal shunt vibrators with triangular shoulders. Synthesis diagram of the antenna system carried out using the method of maximum directional. It is shown that this method of synthesis allows to generate a pronounced main maximum double ring pattern of the antenna array in a given direction in the frequency range from 3 MHz to 27 MHz. In this screening by external ring does not significantly affect the operation of internal ring. Synthesized double ring antenna system has good electromagnetic and geometric characteristics that you can use it as part of the organization for radiating complex of stationary special communication at sites with limited space placement of antenna systems.