Abstract
The explicit expressions (in the Vainshtein and Markov forms) are derived for the excitation of a cylindrical cavity with perfectly conducting walls and with impedance end faces. Excitation of a cylindrical cavity and a cylindrical waveguide with a preset nonuniform axial electron-beam current and a helical current with a variable pitch, which is excited by a concentrated voltage source and is loaded by a preset pointlike matched load, is considered. For the helical current, the integro-differential equation is formulated. The traveling-wave tube (TWT) is simulated in the preset beam current approximation taking into account the nonuniform winding of the spiral coil, nonuniform electron beam, and losses.
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Original Russian Text © M.V. Davidovich, N.A. Bushuev, 2013, published in Zhurnal Tekhnicheskoi Fiziki, 2013, Vol. 83, No. 7, pp. 135–145.
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Davidovich, M.V., Bushuev, N.A. Excitation of a cylindrical cavity by a helical current and an axial electron beam current. Tech. Phys. 58, 1061–1072 (2013). https://doi.org/10.1134/S1063784213070049
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DOI: https://doi.org/10.1134/S1063784213070049