An efficient equivalent circuit model for the EMC analysis of power/ground noise

Abstract

With the ever decreasing feature size and increasing operating frequency, the noise coupling inside the powerground planes becomes more and more serious. We propose an efficient integral equation method to simulate such electromagnetic compatibility problem. With the help of the structural features of the power-ground planes, the integral equation is simplified to a two-dimensional equation. This greatly reduces the computing time and still gives a good accuracy. By discretizing the integral equation, the equivalent circuit model is derived for each power-ground pair. It is straightforward to combine the derived circuit model with other circuit models, such as the transmission lines models of the interconnects and the on-board lumped components, to perform the system-level signal integrity and power integrity simulations. © 2008 IEEE.