Fast diagnosis, prediction and signal characterization of radiated electromagnetic interference (EMI) noise

Usually the analysis and solution scheme for radiated EMI noise is trouble and difficult, since it is concerned with EM field or EM wave model and analysis. In order to ease the radiated EMI problem solved more efficiently, in this paper an approach of fast diagnosis , prediction and signal characterization for radiated EMI noise is presented. In the approach the EMI noise diagnosis technique is based on the near-field measurement and comparison, EM field prediction technique is based on the RF circuit measurement instead of EM field measurement and the noise identification is based on signal processing. It is seen that by using this fast modeling technique, the radiated EMI noise analysis can be simplified somewhere.