Taking into account the integration of electronic components on the boards, the consideration of electromagnetic perturbations is more and more important. The aim of this paper is to present a methodology to model the electromagnetic radiation of electronic components or complete systems so as to predict and avoid future possible interferences. As application, two different systems are modeled: a microcontroller and an oscillator. The characterization of the oscillator allows us to validate the model at a high distance from the component. So, the magnetic field is simulated at 5cm over the circuit under test and it is compared to the measurements. Due to the increase of embedded electronic circuits present in the systems, modeling the emissions of electronic components has become important in the last years. The prediction of possible malfunctions caused by the interference between components mounted on the same board can be achieved by simulation. Consequently, the electronic board designers need the models of their components to predict the radiation and the possible interferences before the conception of the board. In this paper, a simple technique of modeling the magnetic field radiated by a component is presented. The component is modeled by an array of dipoles disposed in a two-dimensional plane. Some characteristics of these dipoles are fixed by the user; nevertheless this particularity provides simplicity for the process and consequently, velocity in the resolution of the equations. In order to apply the model to a real component, a microcontroller mounted on an autonomous board is used. Due to the fact that the measurements of the emissions at a certain height over the component are needed, the main difficulty of using this active device lies in the measurement of the phase of the magnetic field. The technique used is also presented. Due to the fact that the microcontroller used is mounted on an electronic board, the verification of the model at another distance high enough cannot be done because the radiation of the elements around it is measured. Therefore, another circuit is used: an oscillator. This circuit is modeled and afterwards the magnetic field at 5cm is simulated and compared with the measurements. II. PRESENTATION OF THE MODEL