The analysis of spark signal and its interference to a radio receiver

The paper firstly introduced four kinds of spark signal models which used widely in EMI analysis, compared their characteristics, then put forward a new mixed model to simulate the spark signal, which not only accords with IEC 61000-4-2, but is stochastic as well, owns randomicity and superposition so as to be more close to the reality. At last, we used CST software to analyze the spark signal coupling into a radio receiver, gained the EM field inside system shell, and field distributing on the PCB board.