travelling-wave tube (suomeksi)

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(lb, en, electronics) A type of vacuum tube which amplifies electromagnetic signals, where the electron gun fires down the tube with an unmodulated electron beam, that passes through an interaction array, where the EM-signal is fed, which interacts with the electron beam, bunching the electrons, and transferring power to the signal. IEEE Spectrum, [ "The Quest for the Ultimate Vacuum Tube"], Carter M. Armstrong, 24 November 2015