电磁脉冲作用下单极子天线的超宽带响应

The Ultra-wide Band Response of Monopole Antenna in Electromagnetic Pulse Function

目的提出求解短波单极子天线在外界电磁脉冲作用下宽带响应的数值算法——基于利用矩量法的时域积分方法。方法为展开未知电流的时域系数,采用拉盖儿多项式作为整个时域空间中的展开基函数,对单极子天线的瞬态响应进行数值模拟,并和试验数据进行对比验证。结果文中提出的方法与试验数据匹配良好。结论试验结果验证了该方法的有效性,该分析方法可为天线或系统对外界有意电磁干扰的响应及防护研究提供输入条件。

Objective To put foward a numerical algorithm of transient response for short-wave monopole antenna in the external electromagnetic pulse based on time-domain integration method of moments. Methods To expand the time-domain coefficients of unknown current, the Gail polynomial was used for the basic funtion as the whole time-domain space, and the transient reponse of the monopole antenna was numericaly simulated. The results are compared and verified with experimental data. Results The method proposed in this paper match the data in experiment well.The effectiveness of the method is validated. Conclusion The method established the paper can be used as the input conditions for these antenna or system caused intentional elctromagnetic interference response and protection.