考虑实际电路中激励信号不理想对耦合互连线时延分析的影响，建立了斜阶跃信号激励下的互连线时延模型，提出了一种基于耦合RLC互连线的时延分析方法。该方法对已有的解耦算法进行了改进，将斜阶跃信号激励下的耦合互连线模型在线元分析阶段进行解耦，并结合二阶矩模型及改进的一阶模型对互连线的传递函数进行化简，进而给出耦合互连线的时延估计表达式。实验结果表明，互连线时延估计方法可以对耦合RLC互连线模型的时延进行有效评估。

The excitation in actual circuits is always nonideal, which has a definite impact on the analysis of interconnect delay. Considering the impact, the analytical delay model is proposed and the analytical delay method based on coupled RLC interconnect is presented. Then the decoupling method is improved and the coupled interconnects model under ramp input is decoupled when analyzing the interconnect segments. Finally the two-pole model is combined with the improved modified one-pole model to simplify the transfer function and the expression of delay of coupled interconnects is proposed. Experimental results demonstrate that the analysis method can evaluate the delay of coupled RLC interconnects effectively.