弱不平衡条件下平行双线耦合通道大电流注入等效替代辐照试验方法

Bulk Current Injection Replacing Radiation Test Method for Parallel Double-line Coupling Channel Under Weak Unbalanced Conditions

针对在大范围空间中强磁场电磁环境难以模拟辐射效应,以及现有大电流注入技术在测试非线性系统中存在局限性等问题,进行了平行双线耦合通道大电流注入等效替代辐照试验方法研究。以非线性响应系统为受试设备,分别建立了辐照和注入两种条件下受试设备响应的分析计算模型,推导了弱不平衡条件下注入激励源电压与辐照场强的等效对应关系,明确了大电流注入方法等效替代辐照试验的条件和方法,并通过了试验验证。研究结果表明,对于非线性响应系统,大电流注入方法可以准确地等效受试设备的辐射效应测试,误差均不超过1 dB,可以满足工程实际需求。

It is difficult to simulate the strong field electromagnetic radiation effect in a large-scale space, and there is a problem that the limitations of the existing bulk current injection technology in the application of tests. The equivalent alternative radiation test method of bulk current injection is investigated in the parallel double-line coupling channel. The nonlinear response system is taken as the equipment under test, and analysis and calculation models of the response of the equipment under test under two conditions of radiation and injection are established.Moreover, the relationship between the injection excitation source voltage and the radiation field strength is derived under weak unbalanced conditions. The conditions and test method for the equivalent replacement of radiation with bulk current injection are proposed and verified by experiments. The research results show that, for non-linear response systems, the bulk current injection method proposed can be accurately equivalent to the radiation effect test of the equipment under test. The errors are less than 1 dB,which can meet the actual needs of the project.