This thesis was performed in IRSEEM and it is under the EPEA project (EMC Platform for Embedded Applications) of Aerospace Valley cluster. Its objective is to develop models of the emissions radiated by electronic devices. These models must be generic (i.e. applicable to any device), easy to obtain and insertable into commercial electromagnetic simulation tools. Firstly, a model capable to predict electric and magnetic fields in the half-space above a device is developed. It is based on a set of electric and magnetic dipole equivalent sources. Two matrix inversions using the least-square inverse method allow their determination. The model is applied to several circuits (passives and actives) with good results. The insertion of the models into commercial simulators is possible thanks to a reduction in the number of sources. This model is then used for two EMC applications. Firstly, the prediction of the coupling between an aggressor device and a transmission line by two different procedures: an analytical one and a numerical one, then the far-field prediction. Finally, another modelling method to recreate the electric and the magnetic fields in the space surrounding the device is proposed and validated on simple cases.
