S. A. Vyatkina, R. K. Babichev, V. N. Ivanov

I.V. Lisenkov - Researcher, Kotel-nikov Institute of Radio Engineering, and Electronics Russian Academy of Sciences
D.V. Kalyabin - Post-graduate Student, MPTI, Probationer Researcher, Kotel-nikov Institute of Radio Engineering, and Electronics Russian Academy of Sciences. E-mail: kalyabin@cplire.ru
S.A. Nikitov - Professor, Correspondent Member of RAS, Deputy Director, Kotel-nikov Institute of Radio Engineering, and Electronics Russian Academy of Sciences