抄録
“Electromagnetic Interference (EMI)" has become serious problems as development of the digital technology in downsizing in devices and performing high-speed operation. In the EMI problem such as Electro-Static Discharge (ESD), not only the solenoidal field from currents but also the non-solenoidal field due to charges are included. For this problem, the combined numerical analysis of both fields in the three-dimensional space and on the time domain is inevitable. I have already proposed the condensed node Spatial Network Method for the vector and scalar potential fields based on the gauge condition. In this paper, the fundamental field properties near the changing charges including both charging and discharge processes are presented by the method.