Comparison Between Pierce Equivalent Circuit and Recent Discrete Model for Traveling-Wave Tubes
Abstract
To perform accurate numerical simulations of the traveling-wave tube in time domain, a new approach using field decomposition with large reduction of degrees-of-freedom has been proposed: the discrete model. To assess its validity, we compare it with the well-established Pierce equivalent circuit model in small signal regime. We also discuss associated beam, circuit-beam, and circuit impedances. We demonstrate analytically and with a numerical example that the newly developed discrete model is very close to the Pierce model. Interestingly, small deviations do exist at the edges of the amplification band. We speculate that the deviation from reality is on the Pierce model side, while the discrete model would be more accurate.
Keywords
Cite
@article{arxiv.1711.04510,
title = {Comparison Between Pierce Equivalent Circuit and Recent Discrete Model for Traveling-Wave Tubes},
author = {Damien Minenna and Artem Terentyuk and Frédéric André and Yves Elskens and Nikita Ryskin},
journal= {arXiv preprint arXiv:1711.04510},
year = {2018}
}
Comments
arXiv admin note: substantial text overlap with arXiv:1702.04976