**4. Modeling methodology**

To develop a radiating model that enables producing a near field equal to that is radiated by the system under test, we use the flow diagram given in **Figure 13**. The modeling methodology is based on a hybrid approach consisting of the coupling between the electromagnetic inverse method and the Method of Moments (MoM) [20]. *Development of Generic Radiating Model for Rectangular Capacitors: Magnetic Near Fields… DOI: http://dx.doi.org/10.5772/intechopen.98894*

**Figure 13.** *Flow chart of the modeling approach.*

This approach starts by introducing the electromagnetic near field measured around the device under test and then defines the optimization parameters by the Genetic Algorithm (GA) that has been presented in [21, 22]. After, the search is launched to find the parameters of the equivalent radiating structure by comparing the measured cartography to the one calculated numerically by the MoM and using the obtained parameters.

The magnetic field generated by the N sources is calculated using NEC2D software core, which is based on the MoM.

As the capacitor cartographies gather at the radiation of a rectangular loop, the search for models has been launched to find a rectangular current loop using the method based on the coupling between the inverse method and the MoM. Each

**Figure 14.** *Rectangular current loop parameters.*

rectangular loop is characterized by the coordinates of its center (X0, Y0, Z0), its width (w), its length (L), its orientations (φ, θ), the radius (r) of the loop wire, and the current flowing through it (**Figure 14**).
