(a) The transverse structure and (b) the longitudinal structure of the dielectric shells and metal rings alternatively loaded interaction circuit. (c) The cold beam-wave dispersion relation of the NRL gyro-TWT.
The propagation characteristics of an empty waveguide, a uniform lossy DLWaveguide, and a periodic lossy DLWaveguide with the same inner radius.
(a) Normalized in the metal ring section and dielectric section, and the (b) normalized amplitude of the Bloch harmonic component of the and modes in the periodic DLWaveguide.
Comparison between the theoretical simulation and the NRL fundamental mode gyro-TWT experiment under the same operation parameters.
The axial power profile of the absolute instability oscillation of the mode in the unloaded waveguide (, ).
Effect of the magnetic on the thresholds of the mode absolute instability oscillation in the unloaded waveguide.
The effect of the current on the oscillation frequency of the mode absolute instability.
The effect of the current on the critical length of the mode absolute instability.
The balances between the forward wave component and the backward wave component, sampled from Figs. 7 and 8.
The axial normalized power profile of the total field of the absolute instabilities in backward wave region of the fundamental mode interaction system.
The absolute instabilities in the NRL fundamental mode gyro-TWT, the design parameters are given in Table I. The Aquadag scheme is also considered for comparison.
Effect of the operation magnetic on the amplifier stability.
Effect of the length of the unloaded stage on the amplifier stability.
The field profile of a stable amplification at 33.59 GHz.
Saturated power of the amplifier under the assumption that the electron beam is with .
Operating parameters of the NRL gyro-TWT amplifier.
Article metrics loading...
Full text loading...