Yu.S. Stirmanov1, I.V. Grishchenko2, A.V. Konyashkin3, O.A. Ryabushkin4

1−4 Fryazino branch of Kotelnikov Institute of Radioengineering and Electronics of RAS (Fryazino, Russia)

2 Moscow Institute of Physics and Technology (MIPT) (Dolgoprydny, Russia)