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| Simulation of Electromagnetic Interference due to Corrosion Degradation in Aviation RF Electrical Connectors |
| Received:December 26, 2024 Revised:February 18, 2025 |
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| DOI：10.7643/issn.1672-9242.2025.04.005 |
| KeyWord:electrical connector corrosion degradation electromagnetic interference coupling mechanism signal transmission simulation |
| Author | Institution |
| DU Yijiang |
School of Basic Sciences for Aviation, Naval Aviation University, Shandong Yantai , China |
| YU Dazhao |
School of Basic Sciences for Aviation, Naval Aviation University, Shandong Yantai , China |
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| Abstract: |
| The work aims to explore the electromagnetic coupling mechanism of aviation radio frequency electrical connectors under complex electromagnetic pulse interference, and study their anti-electromagnetic interference ability under corrosion degradation. The structure of aviation radio frequency electrical connector and the electromagnetic coupling mechanism after corrosion degradation were studied, and then the coupling electric field and anti-interference capability of radio frequency electrical connector under strong electromagnetic pulse were investigated under the perspective of frequency domain and time domain respectively. The internal coupling electric field modulus of the radio frequency electrical connector increased with the increase of the incident electromagnetic pulse frequency. Under low-frequency interference, the coupling electric field modulus reached a maximum at the gap, while under high-frequency interference, it reached a minimum at the gap. The coupling electric field component was mainly the electric field component with the same polarization direction as the incident electromagnetic pulse. The coupling electric field intensity gradually increased with the widening of the corrosion gap. The coupling voltage generated by the incident electromagnetic pulse distorted the transmission signal. The larger the amplitude of the incident electromagnetic pulse and the wider the corrosion gap, the more severe the signal oscillation and the higher the distortion degree. However, this effect was time-limited. As the coupling electric field tended to stabilize, the signal would gradually stabilize. The anti-interference capability of corroded and degraded aviation RF electrical connectors has significantly deteriorated, which is more sensitive to high-frequency interference. The electromagnetic pulse during the initial stage of interference has a greater impact on signal transmission. |
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