A.M. Petrzhik - Junior Research, Kotel-nikov Institute of Radio Engineering, and Electronics Russian Academy of Sciences. E-mail: petrzhik@hitech.cplire.ru
G.A. Ovsyannikov - Dr. Sc. (Phys.-Math.), professor, the head of the laboratory, Kotel-nikov Institute of Radio Engineering, and Electronics Russian Academy of Sciences. E-mail: gena@hitech.cplire.ru