Title :
Experimental studies of a gyro-TWT amplifier with a lossy ceramic interaction region
Author :
Garven, M. ; Calame, J.P. ; Danly, B.G. ; Nguyen, Khanh T. ; Levush, B. ; Wood, F.N.
Author_Institution :
Vacuum Electron. Branch, Naval Res. Lab., Washington, DC, USA
Abstract :
Summary form only given, as follows. Gyrotron traveling wave tube (gyro-TWT) amplifiers are under investigation for radar applications due to their high power and broad bandwidth capabilities in the millimeter wavelength range. The design and experimental study of a 35 GHz gyro-TWT amplifier operating in the circular TEO/sub 01/ mode at the fundamental cyclotron harmonic are presented. The interaction circuit in this experiment consisted of a new type of ceramic loading that provided controlled loading of both the TEO/sub 01/ operating mode and the backward wave oscillations to ensure stable operation. The gyro-TWT circuit consisted of a lossy, linear amplification section that employed ceramic rings spaced to provide the required absorption. The final, nonlinear stage of amplification occurred in a short conducting wall section at the end of the interaction circuit.
Keywords :
gyrotrons; millimetre wave amplifiers; travelling wave amplifiers; 35 GHz; backward wave oscillations; ceramic rings; controlled loading; design; fundamental cyclotron harmonic; gyro-TWT amplifier; linear amplification section; lossy ceramic interaction region; millimeter wavelength range; performance; radar applications; saturated peak power; spurious oscillations; stable operation; Bandwidth; Ceramics; Circuits; Cutoff frequency; Dispersion; Laboratories; Load flow; Millimeter wave technology; Shape measurement; USA Councils;
Conference_Titel :
Plasma Science, 2002. ICOPS 2002. IEEE Conference Record - Abstracts. The 29th IEEE International Conference on
Conference_Location :
Banff, Alberta, Canada
Print_ISBN :
0-7803-7407-X
DOI :
10.1109/PLASMA.2002.1030308
