V.A. Belokurov – Ph.D.(Eng.), Associate Professor, 

Department «Radio Systems», Ryazan State Radio Engineering University named after V.F. Utkin

E-mail: belokurov.v.a@rsreu.ru

V.I. Koshelev – Dr.Sc.(Eng.), Head of Department «Radio Systems», 

Ryazan State Radio Engineering University named after V.F. Utkin E-mail: koshelev.v.i@rsreu.ru