Experimental evaluation of forward wave analysis for electromagnetic radiation from printed circuit boards

Abstract

In previous works forward wave analysis (FWA) was proposed for the EMC design of printed circuit board (PCB) power supply planes. In particular, FWA focuses on the radiation from PCB edges due to simultaneous switching noise on the power supply planes above 1 GHz and helps selecting the stitching ground via location by fast estimating their effect on the radiation. In the present work FWA is confirmed by experimental results up to 10 GHz based on the assumption that the maximum radiated field is approximately proportional to the mean edge voltage between top and bottom planes of the PCB.