A method of estimating the intra-EMC problem using the weighted magnetic field correlation considering noise source polarization

A novel design method has been developed to solve the Intra-EMC problem in mobile equipment. Recently, there has been a great deal of interest in the deterioration of receiver sensitivity due to the leakage of noise into a receiver circuit via the antenna. To solve this problem, we developed a design method in our previous studies that could estimate the optimal layout of a noise source according to the correlation between the magnetic distributions of the antenna and the noise source. However, the changes in the polarization of the noise source were not sufficiently taken into consideration in previous studies. In this paper, we have proposed a new design method to estimate the optimal layout of a noise source using the weighted magnetic field correlation while also considering the noise source polarization. The effectiveness of the proposed method, which uses a TEG to simulate a portable telephone, has been verified. We confirmed a good correlation between the coupling characteristics (S21) and the weighted magnetic field correlation has been achieved even if the polarization of the antenna and that of the noise source are different.