介绍了一种新型圆极化高功率微波天线,可辐射高功率微波源所产生的 TEM 或 TM_(01)模。该天线由同轴插板式模式转换器和一种新型同轴插板式喇叭组成,模式转换器将输入的同轴 TEM 模转换为4个相位依次相差90°的扇形波导 TE_(11)模,并通过新型喇叭辐射,在轴向上获得了圆极化辐射场。优化设计了一个中心频率为4GHz 的天线,其总长度为385mm,喇叭口径320mm。在中心频率上天线增益为19.3dBi,轴比1.06,反射损耗-20dB。在 3.8～4.2GHz 的频率范围内增益大于18.9dBi,反射损耗小于-10dB。
The common characteristics of most capacitive energy storage systems are the use of gas switch,while the limitation of the recovery of gas switch and ablation of electrode lead to low repetition rates and short life.The widely researched technology of magnetic pulse compression has great perspective in long life,high average power and high repetition rates in the pulsed power system.Through the theoretical analysis and simulation of the parameters of the BOOST circuit,the LC circuit and magnetic compression circuit,the pulse generator circuit based on the BOOST circuit,the LC circuit,the pulsed transformer and the magnetic switch is designed,simulated and optimized by Pspice. The output pulse has 55kV voltage and 500ns pulse-width.
