А.R. Safin - student, Department of generation of oscillations and signals, National Research University "MPEI". E-mail: safin_ansar@mail.ru, arsafin@gmail.com
М.V. Kapranov - Ph.D. (Eng.), professor, Department of generation of oscillations and signals, National Research University "MPEI". E-mail: kapranovmv@mail.ru
N.N. Udalov - Dr.Sci. (Eng.), professor, Department of generation of oscillations and signals, National Research University "MPEI". E-mail: udalovnn@mpei.ru, udalovnn@rambler.ru