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Experiments on a Ku-band gyrotron traveling-wave-tube amplifier with a tapered waveguide

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Abstract

A Ku-band gyrotron traveling-wave-tube (gyro-TWT) amplifier was investigated. To obtain a wide operating bandwidth, we used a two-stage tapered rectangular waveguide interaction circuit. An electron beam of 27 keV and 3.56 A was produced from a double-anode magnetron-injection-gun (MIG). The measured frequency bandwidth over 10 dB gain in the linear operation region was found to be 18%. The gyro-TWT’s saturated output power was 14.9 kW at 14.4 GHz, corresponding to a saturated output power gain of 27.4 dB and an efficiency of 15.5%. The measured experimental results were in agreement with those of non-linear numerical simulations.

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Authors and Affiliations

  1. Department of Electronics Convergence Engineering, Kwangwoon University, Seoul, 01898, Korea

    Sang Wook Jung, Han Seul Lee, Kwang Ho Jang, Jin Joo Choi & Joon Ho So

Authors
  1. Sang Wook Jung
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  2. Han Seul Lee
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  3. Kwang Ho Jang
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  4. Jin Joo Choi
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  5. Joon Ho So
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Correspondence to Jin Joo Choi.

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Jung, S.W., Lee, H.S., Jang, K.H. et al. Experiments on a Ku-band gyrotron traveling-wave-tube amplifier with a tapered waveguide. Journal of the Korean Physical Society 67, 854–859 (2015). https://doi.org/10.3938/jkps.67.854

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  • DOI: https://doi.org/10.3938/jkps.67.854

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