V.O. Kaladzhyan - Student, MPTI. E-mail: vardan1991@mail.ru
S.N. Artemenko - Professor, Principal Researcher, Kotel-nikov Institute of Radio Engineering, and Electronics Russian Academy of Sciences. E-mail: art@cplire.ru

D.O. Petrova - Post-graduate Student, Kaluga Tsiolkovski State University K.G. Nikiforov - Dr. Sc. (Phys.-Math.), Professor, Kaluga Tsiolkovski State University. Е-mail: kgn@kspu.kaluga.ru