The Research Of High Power Millimeter Gyro-Klystron And Gyro-TWT

Millimeter wave possesses both the advantages of microwave and infrared wave. On the one hand, millimeter wave has better transmission characteristics than infrared and visible light, and on the other hand the system working on the millimeter band is smaller in size for missile, satellite and airplane. Lots of research groups had intensively focused on its development. Especially in military high power millimeter technology plays an important role. High power microwave millimeter technology can be used to jam the radars, communications and weapon system so that they can’t work normally, furthermore, protect our radar and command system and win the war. However, the development of high power millimeter radiation sources limits and blocks the advance of millimeter and relative technology. In this paper, a myriad of deep theoretical analysis, numerical simulations and prototypes experiments of16GHz,30GHz and34GHz are demonstrated.A review of the state-of-art about millimeter gyro-devices is concluded. Of all this applications, U.S.A had a series of achievements about W-band gyro-amplifiers and now had applied in the Haystack radar. However, IAP focused on the developments of Ka-band gyro-devides and they also had some applications for their radars. Recent years, relative research is also developed in our country.For the small orbit gyro-TWT and gyroklystron, the magnetron injection gun plays an important role. We give a detailed theoretical analysis, numerical simulations and optimizations. At the same time, the parameters which may have a serious influence on the stability of the helical electron beam are studied. Besides, the low frequency osicallation from MIG is analyzed and the means to improve the HEB quality are put forward. The experimential results agree well with our theory. Based on these, a MIG for gyroklystron with pitch factor1.32, longitudinal velocity spread1.3%and another one pitch factor1.2, longitudinal velocity spread1.1%for gyro-TWT are designed.The Ka-band TE01-TE02gyro-klystron contains four cavities. The input cavity and two bunching cavities work at the mode TE01and have good performance to suppress suprous oscillations. In order to increase power capacity, the output cavity works at TEo2.The gyroklystron performance is demonstrated by linear, inlinear theory, small signal theory and PIC simulation. The experiment explores peak output power350kW and bandwidth280MHz with beam current20A.We also do lots of research and experiments about high power, board bandwidth Ku and Ka-band gyro-TWT on the basis of high quality MIG. A self-consisent small signal theory PIC code is set up and lossy ceramics are loaded to suppress suprous oscillations. The prototypes work at16GHz,30GHz and34GHz and successfully achieve180kW and165kW peak output power respectively.The research and application of gyro-amplifiers in different working frequency are presented from theoretical analysis, numerical calculation, code simulation and cold/hot test. A mature and effective design method is set up.