**5. Conclusion**

The motivation of the presented work was the characterization of electromagnetic radiating sources commonly found in power converter circuits. Time-domain measurement of the radiated field has been carried out in the nearfield using a specific test bench, including high-precision tools. An electromagnetic inverse method based on the EMTR technique has been studied to obtain an efficient equivalent model of the device under test. In case of transient disturbances that occur, for instance, during the turn-on of the transistor of a flyback AC/DC converter, a satisfactory agreement has been achieved between measured and estimated radiation maps, along with a reasonable computation time and memory usage. By comparing these results to a standard frequency domain inverse method based on the genetic algorithm, the proposed TD method has been shown to be advantageous over the FD method for EMC studies and to deal with related EMI issues in advanced electronic systems such as in power electronics and those developed for avionics and wireless communication. Furthermore, we conclude that the EMTR-based method is a good alternative for studying electromagnetic radiation behavior with a three-dimensional reconstruction in the case of multisource structures.
