Title :
Experimental verification of frequency multiplication in two-stage tapered gyro-TWT
Author :
Baik, C.W. ; Jeon, S.G. ; Kim, D.H. ; Sinha, Arun Kumar ; Sato, N. ; Yokoo, K. ; Park, G.S.
Author_Institution :
Sch. of Phys., Seoul Nat. Univ., South Korea
Abstract :
Summary form only given, as follows. A Ka-band harmonic multiplying two-stage tapered gyroTWT has been developed. The third harmonic interaction of electron cyclotron frequencies is used to multiply X-band signals to Ka-band. A previous similar experimental demonstration at NRL showed a 20 % bandwidth at saturated gain of 25 dB with 16 % efficiency when the predicted velocity spreads of 4 % were assumed at Ka-band with the fundamental harmonic interaction. This work showed the linearly tapered rectangular waveguide at both stages could produce enhanced gain, gain uniformity, and efficiency.
Keywords :
gyrotrons; rectangular waveguides; travelling wave tubes; Ka-band harmonic multiplying two-stage tapered gyroTWT; X-band signals; electron cyclotron frequencies; linearly tapered rectangular waveguide; saturated gain; third harmonic interaction; Cathodes; Electron beams; Estimation theory; Frequency conversion; Magnetic field measurement; Magnetic flux; Phosphors; Physics; Saturation magnetization; Voltage;
Conference_Titel :
Plasma Science, 2003. ICOPS 2003. IEEE Conference Record - Abstracts. The 30th International Conference on
Conference_Location :
Jeju, South Korea
Print_ISBN :
0-7803-7911-X
DOI :
10.1109/PLASMA.2003.1228788
