Aspects of electromagnetic interference on printed circuit boards.

Abstract

General guidelines for the design of printed circuit boards have been developed for two important aspects of electromagnetic compatibility: cross-talk and radiated emissions. Numerical methods were used to study the cross-talk between tracks of several common printed circuit board technologies. Design recommendations are suggested that minimize the cross-talk on printed circuit boards. A simple model was developed to predict radiated emissions from complicated circuits on printed circuit boards. The concepts of ground impedance and common-mode currents were used to build a model which gives fast and accurate predictions. The technique was tested using a method of moments program.