Modification of `SPICE´ for simulation of coupled packaging interconnections

A modification of SPICE program, version 2G.6, that allows simulation of networks with multiconductor, lossless transmission lines is dealt with. Terminating networks may contain nonlinear active devices defined in the SPICE format. All SPICE 2G.6 transient analysis features and transistor models are supported. The authors describe the computational procedure based on the transmission line equivalent circuit, explain the principle of SPICE implementation, and give examples of application. The simulator developed is also useful in determining the upper limit for crosstalk in systems with lossy lines. However, the simulator underestimates the transmission delays in such cases, and corrections might be needed. Such corrections are relatively easy to do in most practical cases, where DC losses are dominant