ISSN 0869-6632 (Print)
ISSN 2542-1905 (Online)

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Karetnikova T. A. Linear theory of multisection broadband twt with inhomogeneous helix slow wave structure. Izvestiya VUZ. Applied Nonlinear Dynamics, 2012, vol. 20, iss. 6, pp. 148-159. DOI: 10.18500/0869-6632-2012-20-6-148-159

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Linear theory of multisection broadband twt with inhomogeneous helix slow wave structure

Karetnikova Tatjana Andreevna, Saratov State University

We present the mathematical models, computer code and numerical analysis for modeling linear operation regimes of broadband helix travelling-wave tube (TWT) with the inhomogeneous slow wave structure along the interaction space. One-dimensional model of the interaction of the forward and reflected electromagnetic waves with an electron beam in a inhomogeneous section of the slow wave structure was researched. The calculation method of the linear gain and self-excitation conditions of multisection TWT was suggested. The gain dependence on the frequency and the beam voltage in the absence of and taking into account the reflections was studied. We compared the results of described parametric code and the computer simulation by the one-dimensional parametric codes CHRISTINE1D and TWT1D.

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