A measurement verification for EMI source reconstruction method based on amplitude-only near-field scanning

A modified differential evolution (DE) method is used to reconstruct the equivalent source model of the device under test (DUT) based on amplitude-only near-field scanning in this paper. The equivalent source is a set of infinitesimal magnetic dipoles, which can be used to replace the DUT for electromagnetic interference (EMI) analysis. Then, a test PCB is fabricated to verify this source reconstruction method. The results obtained by the equivalent dipole model have a good agreement with the measured ones.