Suppressing Coupling Crosstalk Technology of Parallel Striplines by Placing Via Fences

In this paper, comparison of coupling crosstalk between parallel striplines with and without via fences structure, and different via fences structures when striplines's pacing changing are presented numerically and emulationally. In addition, the relation between via holes diameter and return loss is emonstrated. Finally, a new via fences structure, which significantly reduces coupling crosstalk and improves return loss, is introduced.