Oscillations of a System of Coupled Oscillators with a Virtod-Type   Virtual Cathode
  The results of numerical modeling of oscillations in a system of two coupled oscillators operatingon the basis of a virtual cathode with controlled external feedback are presented. It is shown that thereexist the modes with generation of chaotic signals and synchronization modes with high signal-to-noise ratio.The effect of parameters of the electron beam and external feedback on the generation frequency of the systemand phase relations between the signals generated in each module is analyzed 
Alexander Hramov