High-power microwave attenuator employing slow wave structure

Mitsuhiro Yoshida, Hiroshi Matsumoto, Tsumoru Shintake, Koji Nishiyama, Sadao Miura

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Using present pulsed microwave amplifier, we can obtain RF peak power beyond one hundred MW. However, it is not easy to test such a high-power RF. To overcome this difficulty we developed a highpower microwave attenuator employing a slow wave structure. For example, the output power of RF pulse compressor for present electron linear accelerator reaches a few hundredsMW RF power, but the existing dummy loads can absorb only a few tens MW of RF power. The attenuator we developed has a kind of periodic structure and is made of metal only. We operated this attenuator using a high-power RF source, and found that it could be operated fewer than 50 pps RF output at 40 MW, 2:5 μs or 100 MW, 0:5 μs.

Original languageEnglish
Pages (from-to)6-10
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Publication statusPublished - 2012 Nov 21
Externally publishedYes


  • C-band
  • Electron linear accelerator
  • High-power microwave attenuator
  • Periodic structure

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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