Computer code for investigation of linear regimes of operation in inhomogeneous broadband helix TWT

The report presents the results of design and testing the computer code, which is suitable for analysis the linear working regimes of broadband helix traveling wave tube with inhomogeneous slow wave structure. The calculation samples are described for the dependences between gain coefficient and voltage and frequency of the signal for varying currents of electronic beam. The conditions of the amplifier parasitic excitation via the reflections from the end of the device were investigated.