A.I. Kalinkin – Post-graduate Student, 

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

E-mail: san_mozart@mail.ru

I.S. Kholopov – Ph.D.(Eng.), Dean of Department «Radioengineering and Telecommunications»,  Ryazan State Radio Engineering University named after V.F. Utkin E-mail: kholopov.i.s@rsreu.ru