Contents I. Introduction
Radiation causing electromagnetic interference (EMI) [1]–[4] has always been a vital issue for researchers. To solve this issue, it is critical to understand its physical mechanism and underlying features related with distributive geometries. Nowadays, due to the increase of digital circuits' speed to tens of Gbps, EMI problems can cover tens of gigahertz spectrum. Hence, it requires more precise modeling techniques and more accurate numerical algorithms. Even though some work have been done trying to unveil the radiation physics corresponding to distributive geometries [5], [6], how each part of the geometry contributes to the total radation and how geometry features are mutually related to radiation were seldom addressed. Most direct parameters such as the current distributions and S-parameters cannot provide insight for above quests. It turned out to be extremely difficult to give a clear description for EMI radiation physics.
