Abstract
First bandwidth measurements of a novel gyrotron amplifier are presented. The coupling between the second harmonic cyclotron mode of a gyrating electron beam and the radiation field occurred in the region of near infinite phase velocity over a broad bandwidth by using a cylindrical waveguide with a helical corrugation on its internal surface. With a beam energy of 185 keV, the amplifier achieved a a maximum output power of 1.1 MW, saturated gain of 37 dB, linear gain of 37 dB, saturated bandwidth of 8.4 to 10.4 GHz (21% relative bandwidth), and an efficiency of 29%, in good agreement with theory.
Original language | English |
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Pages (from-to) | 2746-2749 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 84 |
Issue number | 12 |
DOIs | |
Publication status | Published - 20 Mar 2000 |
Keywords
- electron cyclotron maser
- tube amplifier
- twt amplifier
- microwave amplifier
- microwave devices
- microwave generation
- gyro-devices
- gyro-TWA
- gyro-travelling wave amplifier
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Applications of microwave and mm-wave sources and amplifiers for the defence, security and health sectors
(Participant), Phelps, A. (Main contact) & Ronald, K. (Participant)
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