An Effective Source Reconstruction Method in a Shielding Enclosure Based on Magnitude-Only Near-Field Scanning

An effective source reconstruction method (SRM) in a shielding enclosure is proposed in this paper. Magnitude-only near-field scanning technology is employed to overcome the difficulty of precisely measuring the phase. After scanning the magnitude-only near-field of the real unknown electromagnetic interference (EMI) source in free-space, a global optimization algorithm named differential evolution (DE) method is applied to obtain the equivalent dipole model. Then, the proposed equivalent dipole model can be used to represent the unknown EMI source in the shielding enclosure. The results of the numerical and measurement examples verify the effectiveness of the proposed method.