Amplification of frequency-swept signals in a W-band gyrotron travelling wave amplifier

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The frequency agility of a W-band gyrotron travelling wave amplifier (gyro-TWA) was demonstrated by the amplification of a frequency-swept input signal (chirp signal). The gyro-TWA was developed to provide high output power and wide bandwidth by using a helically corrugated interaction region. In the experiment a ~0.5 W signal of linearly swept frequency bandwidth of 1 GHz was amplified and a gain of over 30 dB was measured when driven by a 40 keV, 1.5 A, axis-encircling electron beam.
Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalIEEE Electron Device Letters
Publication statusAccepted/In press - 11 May 2018


  • gyrotron travelling-wave amplifier
  • helically corrugated waveguide
  • gyro-devices
  • frequency-swept signal

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