An EMC Experimental Kit for Demonstrating The Effect of Printed Circuit Board Layout on the Radiated Emissions

摘要

An EMC experimental kit is developed to illustrate the fundamental mechanisms of radiated emissions from printed circuit boards. The kit is then expanded to cover and demonstrate some of the EMC design techniques such as shielding and filtering that are useful for reducing radiated emissions. In this paper, the experimental kit and the experiment configurations are described. Representative results are given in order to show the PCB layout effect on the differential and common mode radiated emissions. Moreover, the need for integral application of shielding and filtering is emphasized as the outcome of the experiments.