针对平行带状线间的耦合问题,比较了平行带状线间不加孔栅和加孔栅的耦合干扰问题,研究了平行带状线间距不同时加不同孔栅结构的抗耦合干扰情况,分析了孔径与反射损耗的关系。通过计算与仿真,得到了一种新型的孔栅结构,有效地抑制了平行带状线间的耦合干扰。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.