Electromagnetic Coupling Analysis of Printed Circuit Board Traces using Characteristic Mode Analysis

In this paper, the characteristic mode analysis (CMA) has been used to quantify external electromagnetic (EM) field coupling to a realistic printed circuit board (PCB) and to its traces. In our analysis, we show how the location of a trace on a PCB is important in determining the EM field coupling and we illustrate how CMA can be used to optimize the location of a PCB trace for interference control.