Nonlinear Eulerian analysis of harmonic generation in traveling-wave tubes

A third-order nonlinear Eulerian hydrodynamic formulation was developed for the analysis of harmonic generation in helix traveling-wave tubes. The ana lysis was simple and computationally fast compared to Lagrangian analysis, and contrary to the existing belief the theory could as well demonstrate th e saturation behavior of the device. The performance of the theory was also found to be in close agreement with that of the Lagrangian analysis. The t heory is expected to be useful as a first-hand design and simulation tool f or microwave and millimetric wave traveling-wave tubes.