O. A. Morozov, P. E. Ovchinnikov, Yu. A. Semin, V. R. Fidelman

S.V. Voronov - Ph. D. (Eng.), Junior Research Scientist, Department «Radio Engineering», Ulyanovsk State Technical University. E-mail: s.voronov@ulstu.ru I.V. Voronov - Post-graduate Student, Department «Radio Engineering», Ulyanovsk State Technical University. E-mail: ilvo1987@gmail.com