Abstract
| Language | English |
|---|---|
| Pages | 95-107 |
| Number of pages | 13 |
| Journal | Radiophysics and Quantum Electronics |
| Volume | 50 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 Feb 2007 |
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Keywords
- gyrotron-type microwave devices
- electron optical systems
- gyro-traveling-wave tubes
- gyro-backward-wave oscillators
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High-efficiency wideband gyro-TWTs and gyro-BWOs with helically corrugated waveguides. / Bratman, V.L.; Denisov, G.G.; Samsonov, S.V.; Cross, A.W.; Phelps, A.D.R.; Xe, W.
In: Radiophysics and Quantum Electronics, Vol. 50, No. 2, 01.02.2007, p. 95-107.Research output: Contribution to journal › Article
TY - JOUR
T1 - High-efficiency wideband gyro-TWTs and gyro-BWOs with helically corrugated waveguides
AU - Bratman, V.L.
AU - Denisov, G.G.
AU - Samsonov, S.V.
AU - Cross, A.W.
AU - Phelps, A.D.R.
AU - Xe, W.
PY - 2007/2/1
Y1 - 2007/2/1
N2 - 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.
AB - 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.
KW - gyrotron-type microwave devices
KW - electron optical systems
KW - gyro-traveling-wave tubes
KW - gyro-backward-wave oscillators
U2 - 10.1007/s11141-007-0009-9
DO - 10.1007/s11141-007-0009-9
M3 - Article
VL - 50
SP - 95
EP - 107
JO - Radiophysics and Quantum Electronics
T2 - Radiophysics and Quantum Electronics
JF - Radiophysics and Quantum Electronics
SN - 0033-8443
IS - 2
ER -