Modeling of EMI emissions from microstrip structures with imperfect reference planes

This paper briefly describes an effort to use numerical modeling tools to simulate a PCB with a microstrip and understand the effect of improper microstrip design in terms of EMI emissions. Measurement data is used to first validate the model, then various microstrip designs are implemented, and their effects noted. This effort was part of an effort to develop a set of internal microstrip design guidelines which went far beyond the normal guidelines