Title :
Recent test results on broad-band gyro-TWT and gyro-BWO with helically grooved operating wave-guides
Author :
Denisov, G.G. ; Bratman, V.L. ; Glyavin, M.Yu. ; Lygin, V.K. ; Luchinin, A.G. ; Manuilov, V.N. ; Ofitserov, M.M. ; Samsonov, S.V. ; Thumm, M. ; Volkov, A.B.
Author_Institution :
Inst. of Appl. Phys., Acad. of Sci., Nizhny Novgorod, Russia
Abstract :
The paper presents recent test results on low relativistic (20-80 kV) gyro-TWT and gyro-BWO based on a microwave system in the form of a waveguide with helical surface. In particular, in experiments the Ka-band gyro-TWT showed the following output parameters: pulse power up to 180 kW, gain 25-30 dB, instant frequency band 10%, efficiency at second harmonic operation 27%. The gyro-BWO was designed for CW operation with output power of 5-7 kW at frequencies around 24 GHz. Smooth frequency tuning in the band of 10% was demonstrated.
Keywords :
backward wave oscillators; gyrotrons; helical waveguides; microwave amplifiers; travelling wave tubes; 180 kW; 20 to 80 kV; 24 GHz; 25 to 30 dB; 5 to 7 kW; Ka-band gyro-TWT; backward wave oscillators; broad band gyro-BWO; broad band gyro-TWT; frequency tuning; helical surface; helically grooved operating wave-guides; microwave system; second harmonic operation; travelling wave tubes; Bandwidth; Cyclotrons; Electron beams; Frequency; Magnetrons; Power generation; Pulse amplifiers; Testing; Tuning; Voltage;
Conference_Titel :
Vacuum Electronics, 2003 4th IEEE International Conference on
Print_ISBN :
0-7803-7699-4
DOI :
10.1109/IVEC.2003.1286365
