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高功率可变脉宽辐射系统
High-power variable electromagnet impulse radiation system
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摘要: 介绍了一种应用在高功率 VHF 频段可变脉冲产生及辐射系统的组成。在实验室条件下，通过优化设计、调节实现了数 ns 至数十 ns 脉冲宽度辐射输出。利用开路容性天线加载可调电感原理，达到辐射脉冲宽度可变的目的，同时通过并联引入耗能大电感，实现减少辐射脉冲拖尾，增加系统效率的功能；并利用高能量、快脉冲电源为种子电源，为放电回路进行储能放电，利用这一体制减小了系统辐射脉冲间的同步抖动。Abstract: A variable pulse generation and radiation system working at high-power very high frequency(VHF)band was in-vestigated.Based on optimization,radiation output with pulse width between several nanoseconds and tens of nanoseconds was obtained under laboratory conditions.To realize the adjustability of the pulse width,the open-circuit capacitive antenna was loaded with a variable inductor.By introducing the large inductor in parallel,little pulse tail and high efficiency are also achieved.Be-sides,high-power and short-pulsed source was applied in discharge circuit for energy storage and discharge,which reduced the synchronization jitter between the radiation pulses.
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