A Reverberation Chamber Method for the Statistical Assessment of Laptop High-Altitude Electromagnetic Pulse Immunity

High - altitude electromagnetic pulse (HEMP) can couple into enclosures through apertures, cables and other paths, posing a serious threat to internal electronic equipment. Traditional test methods struggle to accurately evaluate the real immunity of intra - enclosure electronic devices in HEMP environments. To address this, this article proposes a new statistical test method based on reverberation chamber (RC). The field uniformity in the RC working volume under HEMP excitation is verified through experiments, and for a certain type of laptop, the statistical law of its failure probability varying with field strength is obtained. Results show that this method can effectively overcome the limitations of traditional directional tests and provide key probabilistic data support for HEMP protection design of intra - enclosure electronic equipment.