射频爆磁压缩发生器辐射性能研究

基于电小环天线等效理论将射频爆磁压缩发生器(RF MFCG)定子线圈等效为电小环天线,分析RF MFCG运行后电磁脉冲辐射情况。对3个不同参数装置模型加载20 kV电压进行静态仿真,得出RF MFCG的辐射功率方向图及辐射强度大小。为提高RF MFCG辐射效率,提出了在RF MFCG上加载鞭天线改进脉冲辐射效果的方法。模拟得出了加载鞭天线RFMFCG运行后10 m、50 m、100 m处的辐射强度。设计制作了加载鞭天线RF MFCG进行实验研究。测试得到的辐射强度表明,加载鞭天线后装置辐射性能明显提高,在60 m距离内可得到较为理想的辐射强度。

Research on Radiation Performance of Radio Frequencies Explosive Magnetic Flux Compression Generator

Radio frequencies explosive magnetic flux compression generator (RF MFCG) as a kind of explosive-actuated device could generate and radio electromagnetic pulse. With the purpose of studying the radiation performance of RF MFCF to guide engineering practice, RF MFCG devices were designed and the corresponding method based on the small loop antenna theory to study radiation performance was performed. The way which is used to improve radiation density of power flux to load whip antenna on RF MFCG is discussed. From the result of static and experiments we can see that the way of improving RF MFCG radiation performance is available.