抄録
In the present paper, we have proposed an approach of the leakage magnetic field source searching of a micro processing unit (MPU)on a practical printed circuit board (PCB)from a locally magnetic field distribution. At first, the Fourier multi-resolution analysis was applied to locally measured magnetic field distributions. Secondly, we have calculated a current distribution by using a new approach based on the minimum norm method. Numerical simulations were carried out in order to verify our approach. As a result, the results have verified that the approach is capable of applying to the magnetic field source searching of the practical PCBs.
