Спасибо! Очень близко к искомому. Lossy transmission line coupling .subckt models
The following set of subcircuits, t2coupled ... t5coupled, can
be used to model coupling between lossy transmission lines.
The coupling is realized using the method descibed in "Efficient Transient
Simulation of Lossy Interconnect", by J.S. Roychowdhury and D.O. Pederson,
published in the Proc. DAC 91, and is subject to the following limitations:
1) all of the line parameters, C, L, R, G, Cm, & Lm, must be the same for all of the lines in the set;
2) coupling is modeled across adjacent lines only;
3) edge effects are neglected as a result of the first limitation.
Жаль, что у меня параметры между разными парами различаются.