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    NTHUR > College of Science  > Department of Physics > PHYS Journal / Magazine Articles  >  Frequency tunable gyrotron using backward-wave components

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    Title: Frequency tunable gyrotron using backward-wave components
    Authors: T. H. Chang;T. Idehara;I. Ogawa;L. Agusu;S. Kobayashi
    Teacher: 張存續
    Date: 2009
    Publisher: American Institute of Physics
    Relation: Journal of Applied Physics, American Institute of Physics, Volume 105, Issue 6, March 2009, Pages 063304 (4 pp.)
    Keywords: frequency tunable gyrotron
    backward-wave components
    millimeter regime
    Abstract: We report a frequency tunable scheme for the gyrotron at millimeter/submillimeter regime. Unlike the step-tunable type where oscillation frequencies change discretely, this scheme continuously adjusts the oscillation frequency as the magnetic field varies. It is a hybrid system, taking the advantages of the backward-wave interaction and the converter-free output structure. The characteristics of backward-wave interaction will be shown. A proof of principle experiment was conducted with a scaled cavity. The result shows the oscillation frequency smoothly transitions over a wide range of 6 GHz from 134 to 140 GHz. With proper design this mechanism is capable of producing medium output power with broad frequency tunability up to the terahertz region.
    Appears in Collections:[Department of Physics] PHYS Journal / Magazine Articles

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