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

For citation:

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

This is an open access article distributed under the terms of Creative Commons Attribution 4.0 International License (CC-BY 4.0).
Full text PDF(Ru):
(downloads: 158)
Article type: 

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.

  1. Pierce JR. Traveling Wave Tubes. New York: Van Nostrand Company; 1950.
  2. Altman JL. Microwave Curcuits. New York: Van Nostrand; 1964. 462 p.
  3. Haddad GI, Bevensee RM. Start-oscillation conditions of tapered backward-wave oscillators. IEEE Transactions on Electron Devices. 1963;10(6):389–393. DOI: 10.1109/T-ED.1963.15264.
  4. Antonsen TM, Jr Safier P, Chernin DP, Levush B. Stability of traveling-wave amplifiers with reflections. IEEE Transactions on Plasma Science. 2002;30(3):1089–1107. DOI: 10.1109/TPS.2002.801563.
  5. Zeitlin MB, Katz AM. Traveling Wave Lamp: Questions of Theory and Calculation. Moscow: Sovetskoe Radio; 1964. 311 p. (in Russian).
  6. Rozhnev AG, Sokolov DV. Calculation of Electrodynamic Characteristics of Spiral Decelerating Systems of Broadband TWT: Study Guide. Saratov: «College»; 2004 (in Russian).
  7. Rozhnev AG, Ryskin NM, Sokolov DV et al. New 2.5D code for modeling of nonlinear multisignal amplification in a wide-band helix traveling wave tube. In: Fifth IEEE Int. Vac. Electr. Conf. (IVEC-2004). Monterey, USA; 2004. P. 144–145.
Short text (in English):
(downloads: 84)