中文摘要：

为了提高辐射问题的计算效率,推导了微带线结构的基于闭式空域格林函数的矩量法（MOM）计算公式.在损耗基底介质的情况下,研究了微带信号线的辐射干扰以及单屏蔽线对辐射干扰的抑制作用.模拟结果显示,存在屏蔽线的微带线结构所产生的辐射干扰场远小于无屏蔽线的辐射干扰场,表明此单屏蔽线对电磁辐射干扰有很好的抑制效应.因此,在数字电路的电磁兼容（EMC）设计中,在强信号线邻近处放置1条屏蔽线能有效地降低辐射干扰.

英文摘要：

In order to increase computing speed of radiation problems, method of moments（MOM） formulations including closed-form spatial domain Green＇s functions are derived for geometry of mierostrip. Based on lossy substrate, radiation emission and interference suppression for signal lines are investigated. It is shown that the radiated field from a signal line with a shielding line is much less than that from a signal line without a shielding line, the shielding line is suitable for interference reduction. Therefore, in the electro magnetic compatibility （EMC） design of digital circuits, adding a shielding line to a strong signal line can effectively decrease spurious radiation.