The correlation and an equivalent method of direct current injection (DCI) and high-intensity radiated field (HIRF) on the wire

To determine the external electromagnetic field and the induced current on the wire quantitative relationship for the application of DCI technology, green function method based on transmission line theory in this paper are proposed to analyze the induced current of the wire under external electromagnetic radiation. Then via a numerical calculated case, the results using the proposed analytical method show that the induced current resonates at a certain frequency. And the focus should be on the maximum induced current on the wire at a certain frequency. Then the injected power of the current probe which is needed to generate the maximum induced current is calculated by using the equivalent principle, and the injected power near the position of the maximum induced current is compared and analyzed. The results shows that the injected power of the current probe varies with the position at a certain frequency when the external field is determined. Finally, the quantitative relationship between external electromagnetic field and induced current is summarized briefly, which can provide certain data basis for the application of the DCI technology.