On the Maximum Expected Electric Field in Electrically Small, Undermoded Enclosures

Bremner, Paul ; Trout, Dawn ; Vazquez Ramos, Gabriel

关键词: AEROSPACE INDUSTRY;    MATHEMATICAL MODELS;    AVIONICS;    MEAN SQUARE VALUES;    PROBABILITY THEORY;    SHIELDING;    ELECTRIC FIELDS;    ELECTROMAGNETIC COMPATIBILITY;    ENCLOSURE;    MODE (STATISTICS);    MEAN;   

RP-ID  :  KSC-E-DAA-TN68505

学科分类：统计和概率

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

This paper reports the experimental validation of an improved statistical model for the prediction of maximum expected electric field in electrically small and under-moded enclosures. The aerospace community is interested in application of Hill's statistical models to design of avionics boxes for shielding effectiveness and for tailoring EMC test requirements for critical applications. However, it is observed that the probability distribution for mean-squared electric field in an electrically small enclosure differs from the exponential distribution which is widely used in reverberation chamber testing. It is postulated here that the difference is attributable to the under-moded character of the small enclosure.