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Comparison of 2D particle‐in‐cell simulation with 1D nonlinear theory of helix traveling‐wave tubes

Two‐dimensional (2D) particle‐in‐cell (PIC) simulations, using MAGIC code, have been performed for wide‐band helix traveling‐wave tubes (TWTs) in a large‐signal regime. Fundamental and second‐harmonic power calculated over a 1.5‐octave frequency range of 6–18 GHz were compared and found to be in good agreement with those obtained by one‐dimensional (1D) nonlinear theory. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 34: 451–454, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10492