Worst-Scenario Prediction for Field-to-Cable Coupling Under Continuous Intentional Electromagnetic Interference Attack

Studying intentional electromagnetic interference (IEMI) is crucial for safeguarding hardware safety, as it helps to address the deliberate disruption of electronic devices. The field-to-cable coupling serves as a prevalent attack mechanism of IEMI, precipitating unexpected failures of the device under test. Many efforts focus on the analysis of field-to-cable coupling under high-power electromagnetic pulse, but less target on the phenomenon illuminated with continuous waves. This paper proposes a novel method to predict the worst-case for field-to-cable coupling under continuous IEMI attack. By employing the transmission line theory to characterize the cables and obtaining the impedance information of the devices at both ends of the cable, an analytical model is built for determining the terminal voltage frequency responses induced by IEMI. Subsequently, the sensitive frequency region of this cable-connected electrical system can be determined, facilitating purposive immunity improvements. Using an unmanned aerial vehicle (UAV) as an example, the analytical calculations are compared with the radiated susceptibility test. The results exhibit a good agreement with experiments and validate the effectiveness of the proposed method.