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Transparent traveling wave tubes with electron-beam modulation at the cathode

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Abstract

We consider the results of an experimental investigation of a laboratory prototype of a microwave amplifier based on a transparent traveling wave tube (TWT) with the input signal applied either to a beam-modulating near-cathode grid or (traditional scheme) to the input helix of a slow-wave system. Dependences of the amplifier gain and efficiency on the input-power level are presented. In the TWT scheme with a modulating grid, the electron efficiency reaches 50–56% at a gain of 12–13 dB.

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Authors and Affiliations

  1. Saratov State University, Saratov, 410012, Russia

    Yu. A. Kalinin, A. S. Fokin & A. V. Starodubov

Authors
  1. Yu. A. Kalinin
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  2. A. S. Fokin
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  3. A. V. Starodubov
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Corresponding author

Correspondence to A. S. Fokin.

Additional information

Original Russian Text © Yu.A. Kalinin, A.S. Fokin, A.V. Starodubov, 2014, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2014, Vol. 40, No. 18, pp. 33–37.

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Kalinin, Y.A., Fokin, A.S. & Starodubov, A.V. Transparent traveling wave tubes with electron-beam modulation at the cathode. Tech. Phys. Lett. 40, 791–792 (2014). https://doi.org/10.1134/S1063785014090223

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  • DOI: https://doi.org/10.1134/S1063785014090223

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