Electromagnetic optimization of PCB differential-via for signal integrity using analysis of variance

This paper describes a new electromagnetic optimization technique using Taguchi's method and applies it to design differential-via in multilayered printed circuit boards (PCB). Taguchi's method was developed on the basis of the orthogonal array (OA) concept, which offers systematic and efficient characteristics. Using the concept of the analysis of variance, different via's physical aspect ratios have been set in the analysis. The impacts of these parameters are investigated with the help for a full-wave electromagnetic simulation soft HFSS. The Taguchi method can quickly converge to the desired design since it takes less computational resource. And the Taguchi's method is easy to implement and efficient to reach the optimum solutions.