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.