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设计了基于交叉耦合铁氧体非线性传输线高功率射频微波产生系统,系统由脉冲形成线、非线性传输线以及高功率匹配负载(或组合振子辐射天线)组成。由100kV高压电源和高压微波电缆构成单传输线高功率脉冲形成线,形成线输出脉冲幅度35kV,脉冲半宽60ns。高压脉冲经过非线性传输线的脉冲压缩和调制,与高功率匹配负载相连时,实验得到了峰峰值31kV、中心频率308 MHz、3dB带宽为13%的射频振荡脉冲;与组合振子天线相连时,实验得到了中心频率380MHz、3dB带宽为12%的宽谱辐射。实验结果与数值模拟基本吻合。
A high-power RF microwave generation system based on the cross-coupled ferrite nonlinear transmission line is designed. The system consists of a pulse forming line, a nonlinear transmission line, and a high-power matching load (or combined oscillator radiating antenna). A 100kV high-voltage power supply and high-voltage microwave cables form a single transmission line with high-power pulses, forming a line output with a pulse width of 35kV and a pulse half-width of 60ns. When the high-voltage pulse is compressed and modulated by the pulse of the non-linear transmission line and connected to the high-power matched load, the RF oscillation pulse with the peak-to-peak value of 31kV, the center frequency of 308MHz and the 3dB bandwidth of 13% has been obtained. Get the center frequency of 380MHz, 3dB bandwidth of 12% of the wide-band radiation. The experimental results are in good agreement with the numerical simulation.