Modeling radiated emissions from cables attached to printed circuit boards driven by power bus noise

Abstract

This paper describes a two-step technique for modeling the radiated electromagnetic emissions from a printed circuit board with attached cables when the source of the emissions is noise between the board's power and ground planes. The first step calculates the electric fields at the edges of the power-ground plane pair. The second step replaces the power plane with equivalent sources embedded within the ground plane structure. Examples are provided that demonstrate the accuracy of this approach.