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

Zhang, Liang and Donaldson, Craig R. and Cain, Peter and Cross, Adrian W. and He, Wenlong (2018) Amplification of frequency-swept signals in a W-band gyrotron travelling wave amplifier. IEEE Electron Device Letters. pp. 1-4. ISSN 0741-3106 (In Press)

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    Abstract

    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.

    ORCID iDs

    Zhang, Liang ORCID logoORCID: https://orcid.org/0000-0002-6317-0395, Donaldson, Craig R. ORCID logoORCID: https://orcid.org/0000-0001-6627-2461, Cain, Peter, Cross, Adrian W. ORCID logoORCID: https://orcid.org/0000-0001-7672-1283 and He, Wenlong ORCID logoORCID: https://orcid.org/0000-0001-7018-0527;