Yu.N. Parshin – Dr.Sc.(Eng.), Professor, Head of Department of Radio Engineering Devices, Ryazan State Radio Engineering University

E-mail: parshin.y.n@rsreu.ru

I.I. Frolov – Ph.D.(Eng.), Deputy Director, of STC, Ryazan State Instrument-Making Enterprise E-mail: ntc@plata.ryazan.ru

N.I. Bobkov – Ph.D.(Eng.), Head of Research Sector, JSC «VNII «Gradient» (Rostov-on-Don) E-mail: ua6lac@mail.ru