Predicting Radiation of CISPR 25 Complaint ALSE Environment
Keywords:
ALSE method, cable bundle, CISPR 25, Common-Mode current, Common-Mode voltage, radiated emissionAbstract
According to the ALSE configuration in CISPR 25, cable bundle is often the dominant radiation structure due to the Common-Mode (CM) current. However this emission test method suffers from a need of a large anechoic chamber. In order to reduce this cost of electronic component development in the EMC test phase, this paper presents a CM current-scan to predict the radiated emissions from 30MHz - 1GHz; moreover, CM-voltage measurement on the cable bundle is also proposed from 150 kHz - 30 MHz. Both methods rely on simple radiating structures and do not take into account the complexity of a real ALSE environment. Therefore a calibration approach based on measured data is proposed to incorporate real influence factors in an anechoic shielded chamber. The proposed approaches are verified by different cable bundles and measurements. Index Terms – ALSE method, cable bundle, CISPR
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References
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