An Improved Dipole-Moment Model Based on Near-Field Scanning for Characterizing Near-Field Coupling and Far-Field Radiation From an IC

作者：Yu Zhenwei^*; Mix Jason A; Sajuyigbe Soji; Slattery Kevin P; Fan Jun

来源：IEEE Transactions on Electromagnetic Compatibility, 2013, 55(1): 97-108.

DOI：10.1109/TEMC.2012.2207726

• Dipole-moment model
• near-field coupling
• near-field scanning
• radio-frequency interference (RFI)
• regularization technique
• truncated singular-value decomposition (SVD) method

In this paper, an improved dipole-moment model for characterizing near-field coupling and far-field radiation from an IC based on near-field scanning is proposed. An array of electric and magnetic dipole moments is used to reproduce the field distributions in a scanning plane above an IC. These dipole moments can then be used as noise sources for the IC. In order to ensure the accurate prediction of the near-field coupling from the IC, the regularization technique and the truncated singular-value decomposition method are investigated in this paper, together with the conventional least-squares method, to reconstruct the dipole moments from the near-field scanning data. A simple example is used to demonstrate the approach. The improved dipole-moment model is particularly useful for addressing radio-frequency interference issues where near-field noise coupling needs to be accurately analyzed.

• 出版日期2013-2