大电流注入探头对电磁辐射敏感性研究的影响

随着战场电磁环境日趋恶劣，考核武器装备在强电磁场环境条件下适应性的技术需求变得越来越高.采用大电流注入等效替代连续波强场电磁辐射研究中，电流注入探头带来的影响是不可回避的.对非线性互联系统实现注入等效替代辐射实验方法进行了分析，介绍了关键器件大电流注入探头以及其等效电路模型.通过理论分析和实验验证发现辐射实验时不放置大电流注入探头对等效产生的误差不可忽略，需保证辐射和注入两种条件下等效电路相同.进一步对所用探头性能进行了测试，在150 MHz频点时，随着注入功率增大至60 W时，探头注入与输出线性误差高于12%，因此在高功率注入等效替代强场电磁辐射实验时，注入探头自身性能会对等效产生影响. 

Influence of Bulk Current Injection Probe on Electromagnetic Radiation Sensitivity Research

With the increasingly harsh electromagnetic environment of the battlefield, the technical requirements for assessing the adaptability of weapons equipment to the conditions of strong electromagnetic fields have become higher and higher. In the study about taking bulk current injection to replace continuous-wave strong-field electromagnetic radiation, the effect of current injection probe is unavoidable. In this paper, an experimental method was analyzed to implement injection equivalent radiation replacement for nonlinear interconnected systems. The bulk current injection probes of key devices and their equivalent circuit models were introduced. Through theoretical analysis and experimental verification, it is found that the equivalent error is not negligible when the radiation experiment performs without bulk current injection probe, and the same equivalent circuit must be provided for both radiation and injection conditions. The test results on the probe performance show that, at 150 MHz frequency, the linear error of probe injection and output can be higher than 12% when the injection power reaches to 60 W, demonstrating the effect of performance of injected probe itself on the equivalent in the equivalent high field electromagnetic radiation experiment.