The construction of time-domain solutions by the superposition of modes is explained for the general case, which may not have any symmetry in the lines or terminations. This simplified method requires that the logic-gate terminal impedances be approximated by linear effective resistances that can be adequately determined by SPICE analysis of the actual logic gates. Several examples of results of crosstalk calculations made by the simplified method are presented and compared with corresponding results obtained using the SPICE transmission-line methods of Tripathi and Rettig (IEEE Trans. Microwave Theory Tech., vol. MTT-33, no.12, p.1513-18, 1985) along with full SPICE models of the logic gates. The simplified approach is shown to give satisfactory agreement for most purposes.
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机译：对于一般情况，说明了通过模式叠加构造时域解的方法，这种情况在线路或终端中可能没有任何对称性。这种简化的方法要求逻辑门的终端阻抗由线性有效电阻近似，该线性有效电阻可以通过对实际逻辑门的SPICE分析适当确定。给出了使用简化方法进行串扰计算的结果的几个示例，并将这些示例与使用Tripathi和Rettig的SPICE传输线方法获得的相应结果进行了比较（IEEE Trans。Microwave Theory Tech。，第MTT-33卷，第12期， 1985年，第1513-18页）以及逻辑门的完整SPICE模型。简化的方法在大多数情况下显示出令人满意的一致性。
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