Title :
Theory and experimental study of a 400kW Ku-band gyro-TWT
Author :
Jianxun Wang ; Yong Xu ; Yong Luo
Author_Institution :
Inst. of High Energy Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A high output power gyro-traveling wave tube (Gyro-TWT) on Ku band is designed and hot tested. The experiment test presents a 420kW output power, more than 1.6GHz (10%) -1dB bandwidth, about 35dB saturated gain and 23% efficiency in a stable working condition. To increase the power capacity TE01 mode is chosen as the working mode, and a 68kV 27A beam is used to generate the high output power. A high quality Magnetron injection gun (MIG) is optimized for the high efficiency beam wave interaction. A new lossy ceramic structure which has the mode selective loss property is designed to suppress the potential gyro-backward-wave oscillator interactions and absolute instability of TE11 and TE21 with a moderate attenuation of TE01 mode.
Keywords :
gyrotrons; microwave generation; stability; travelling wave tubes; Ku band gyrotron TWT; current 27 A; gyro-travelling wave tube; gyrotron-backward wave oscillator interactions; magnetron injection gun; power 400 kW; voltage 68 kV; Gyro-TWT; High Power; Ku-band; absolute instability; gyro-backward-wave oscillation;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2015 IEEE International
Print_ISBN :
978-1-4799-7109-1
DOI :
10.1109/IVEC.2015.7224009
