两种分布加载电磁脉冲天线的FDTD方法模拟

A study of two kinds of electromagnetic pulse antennas with a continuous resistive loading using the FDTD method

为了研究电磁脉冲(EMP)对各种电子系统的效应规律,需要设计一种合适的EMP辐射天线。采用时域有限差分(FDTD)方法考察了柱形和锥形两种分布加载行波天线的瞬态辐射特性,详细讨论了各种天线参数对辐射特性的影响。给出了FDTD模拟天线瞬态辐射过程的关键算法,并将计算结果与公开文献进行了比较,证明了结论的可靠性。

The cylindrical and conical monopole antenna with a continuous resistive loading is considered as a radiator in the experiments of the electromagnetic pulse compatibility. The various principle of the resistive loading is discussed in details and the characters of the antennas are studied using the FiniteDifference TimeDomain (FDTD) method. The key techniques of the calculating are presented. The results are in good agreement with the documents and the theory.