Effects of external reflections on gyrotron backward wave oscillators

S. H. Chen, C. C. Chiu, T. H. Chang, K. F. Pao, K. R. Chu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The gyrotron backward-wave oscillator (gyro-BWO) is sensitive to external reflections because it employs a non-resonant interaction structure. These reflections may result in serious output power variations and ragged frequency tuning. A numerical model is developed for the investigation of the reflection effects. It treats beam-wave interactions in the presence of external reflections. As a hybrid feature of the formalism, external reflections are self-consistently determined by the structures, rather than artificially set as a constant value as in previous models. The model has been employed to examine the effects of external reflections on the tunable bandwidth of the gyro-BWO, and showed the resonance in the external circuit is the major cause of the ragged frequency tuning.

Original languageEnglish
Title of host publicationConference Digest of the 2004 Joint 29th International Conference on Infrared and Millimeter Waves and 12th International Conference on Terahertz Electronics
EditorsM. Thumm, W. Wiesbeck
Pages637-638
Number of pages2
StatePublished - 2004
EventConference Digest of the 2004 Joint 29th International Conference on Infrared and Millimeter Waves and 12th International Conference on Terahertz Electronics - Karlsruhe, Germany
Duration: 27 Sep 20041 Oct 2004

Publication series

NameConference Digest of the 2004 Joint 29th International Conference on Infrared and Millimeter Waves and 12th International Conference on Terahertz Electronics

Conference

ConferenceConference Digest of the 2004 Joint 29th International Conference on Infrared and Millimeter Waves and 12th International Conference on Terahertz Electronics
Country/TerritoryGermany
CityKarlsruhe
Period27/09/041/10/04

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