| Along with Multi-Beam Klystron(MBK) technology introduce from Russia and realize made in our country last century ,The new type power device already extended radar,electron-war,telemetry,communication industry ,MBK is adopted Multi-Beam technique development,improve efficiency bandwidth product and reduce the operating voltage greatly ,MBK has a lot of characters , such as broadband,high gain and efficiency,low operating voltage,light weight,small size,control grid. Performance index has many advantages compared with the single beam klystron, so that transmitters choose multi-beam klystron as the last amplifier having various performances as broadband and high efficiency.This paper introduces a kind of transmitter using multi-beam klystron. Peak output power 160kW,work pulse width 0.5μs-400μs,repetition frequencies 50Hz-20kHz variations . The first, this article entirely introduces the radar transmitter design principle, special emphasis was given microwave tube and modulator principle, MBK's origin,development actuality. The second part based on the system technic target The employing of MBK,high-voltage supply power,grid modulator,charging circuit,water cooling system,control circuits are described in the paper, special emphasis were given power and modulator. The third part based on the system technology condition manufactured transmitter many experimentations, giving the testing results. The four part pointed out its decpect and presented some recommdations .The subject mostly key technologies are listed as the following:1,The investigation of MBK's application: the characteristic of grid,gain,bandwidth,suppression strike,mount and employ2,The series connection of high frequency switching power supply and common high voltage power supply3,The high voltage,high frequency Floating Plate Hard Tube ModulatorThe subject mostly innovation:1,Firstly using MBK in the product2,The method of series connection of high frequency switching power supply and common high voltage power supply3,Giving out the method of high frequency grid Modulator... |
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