V.A. Obukhovets - Dr. Sc. (Eng.), Professor, Department of Antennas and Radio Transmitting Devices, Southern Federal University (Rostov-on-Don). E-mail: vao@tgn.sfdeu.ru

V. L. Kolesnikov1, A. V. Bragin2, N. P. Urubkov3
1–3 Zavod RUSNIT, LLC (Ryazan, Russia)