Simulation of noise-power ratio with the large-signal code CHRISTINE

This paper describes simulations of the noise-power ratio (NPR) for a helix traveling-wave tube (TWT) performed with the large-signal, 1-D, multi-frequency code CHRISTINE. The results indicate that NPR simulations with large-signal codes have the potential to shorten the design phase of TWTs by eliminating the need for repeated build-test cycles to meet a required NPR.