Experimental study of an injection-locked gyrotron backward-wave oscillator

A Ka-band gyrotron backward-wave oscillator (gyro-BWO) experiment has been performed to investigate the phase control, fast tunability, and power capability. Efficient injection locking was accomplished by novel circuit arrangements. Maximum power of 113 kW at about 19 percent efficiency was achieve...

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Bibliographic Details
Published in:Physical review letters 1993-02, Vol.70 (7), p.924-927
Main Authors: KOU, C. S, CHEN, S. H, BARNETT, L. R, CHEN, H. Y, CHU, K. R
Format: Article
Language:English
Subjects:
Applied sciences
Electronic tubes, masers
Electronics
Exact sciences and technology
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Summary:A Ka-band gyrotron backward-wave oscillator (gyro-BWO) experiment has been performed to investigate the phase control, fast tunability, and power capability. Efficient injection locking was accomplished by novel circuit arrangements. Maximum power of 113 kW at about 19 percent efficiency was achieved, showing favorable scaling to still higher powers. Stable voltage tuning bandwidth of 5 percent at 67 kW peak power was also observed. The measured performance has demonstrated a strong potential of the gyro-BWO for new applications requiring high-power tunable millimeter-wave sources. (Author)
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.70.924