A.Yu. Koziratsky - Dr. Sc. (Eng.), Professor, Head of Department of Radio Engineering and Antenna-Feeder Devices, MESC «Zhukovsky-Gagarin Air Force Academy» (Voronezh). E-mail: sashfish@bk.ru M.L. Parinov - Ph. D. (Eng.), Associate Professor, MESC «Zhukovsky-Gagarin Air Force Academy» (Voronezh) S.V. Petrenkov - Lecturer, MESC «Zhukovsky-Gagarin Air Force Academy» (Voronezh)