Projects per year
Abstract
We review the studies of gyrotron-type microwave devices whose electrodynamic system has the form of an oversized metal waveguide with a helically corrugated internal surface. For certain parameters, such a corrugation changes radically the waveguide dispersion ensuring an almost constant group velocity of the eigenmode for a small (close to zero) longitudinal wave number in a wide frequency band. The use of ``helical'' waveguides along with electron optical systems which form near-axis electron beams makes it possible to create high-efficiency amplifiers based on gyro-traveling-wave tubes (gyro-TWTs) with a wide instantaneous frequency band of amplification and gyro-backward-wave oscillators (gyro-BWOs) with continuous wideband tuning of the oscillation frequency. The studied devices are superior to the well-studied microwave sources of this type (gyroklystrons and gyrotrons) in frequency band, by more than an order of magnitude, and are not inferior to them in efficiency even for a wide spread of electron velocities.
Original language | English |
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Pages (from-to) | 95-107 |
Number of pages | 13 |
Journal | Radiophysics and Quantum Electronics |
Volume | 50 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1 Feb 2007 |
Keywords
- gyrotron-type microwave devices
- electron optical systems
- gyro-traveling-wave tubes
- gyro-backward-wave oscillators
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Dive into the research topics of 'High-efficiency wideband gyro-TWTs and gyro-BWOs with helically corrugated waveguides'. Together they form a unique fingerprint.Projects
- 1 Finished
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Compression of frequency modulated pulses using a high order helically corrugated waveguide
Cross, A. (Principal Investigator), Phelps, A. (Co-investigator), Ronald, K. (Co-investigator) & Zhang, L. (Researcher)
EPSRC (Engineering and Physical Sciences Research Council)
1/10/06 → 30/09/10
Project: Research
Activities
- 1 DO NOT USE - Hosting of external, academic or non-academic visitor
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Research collaboration with Institute of Applied Physics, RAS
Phelps, A. (Host)
1 Jan 1995 → 31 Dec 2015Activity: Public Engagement and Outreach › DO NOT USE - Hosting of external, academic or non-academic visitor