Evaluation of Differential-Mode Radiated Susceptibility of COTS Equipment in Different Test Methods
11th International Conference on Recent Advances in Air and Space Technologies, Conference Program, RAST 2026, İstanbul, Türkiye, 13 - 15 Mayıs 2026, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Doi Numarası: 10.1109/rast69551.2026.11672379
- Basıldığı Şehir: İstanbul
- Basıldığı Ülke: Türkiye
- Anahtar Kelimeler: COTS, differential mode, IEC61000-4-3, radiated immunity, radiated susceptibility, RS103, RS485
- İstanbul Ticaret Üniversitesi Adresli: Evet
Özet
The adoption of commercial-off-the-shelf (COTS) equipment in defense applications has accelerated substantially. However, the extent to which commercially qualified equipment satisfies military electromagnetic environmental effects (E3) criteria necessitates systematic evaluation. This paper compares the MIL-STD-461G RS103 and IEC 61000-4-3 RF immunity test methodologies in terms of differential-mode radiated susceptibility. Both test setups are modelled in a test scenario comprising RS-485 differential signaling interface. The differential-mode voltage induced at the equipment terminals is used as the primary susceptibility metric to compare the two test methodologies. Unlike the single-conductor model in which IEC setup is shown to be more susceptible as compared to RS103 setup, this work shows that it is not possible to draw a clear and consistent conclusion about which setup is more demanding in the differential-mode case. This finding highlights the importance of cable geometry and interface characteristics complexity in assessing the RF susceptibility of Commercial Off-The-Shelf (COTS) equipment for military applications.