А.М. Аleshechkin - Dr.Sc. (Eng.), Associate Professor, Head of Department, Siberian Federal University (Krasnoyarsk). E-mail: AAleshechkin@sfu-kras.ru P.A. Lopardin - Senior Research Scientist, Siberian Federal University (Krasnoyarsk). E-mail: LopardinPA@mail.ru А.N. Frolov - Head of Sector, Chief Designer, JSC «SPE «Radiosviaz» (Krasnoyarsk). E-mail: Engineer_f@mail.ru