The

The standalone program `multidec` produces a subcircuit for
multiconductor lossy transmission lines in terms of uncoupled (single)
simple lossy lines. This decomposition is valid only if the following
hold:

- The electrical parameters (R, G, Cs, Cm, Ls, Lm) of all wires are identical and independent of frequency.
- Each line is coupled only to its (maximum 2) nearest neighbors.

The subcircuit is sent to the standard output and is intended to be included in an input file.

The command-line options for `multidec` are as follows:

-l< self-inductance Ls>-c< self-capacitance Cs>-r< series-resistance R>-g< parallel-conductance G>-k< coeff-of-inductive-coupling K>-x< mutual-capacitance Cm>-o< subckt-name>-n< number-of-conductors>-L< length>

The inductive coupling coefficient K is the ratio of Lm to Ls. Values for -l, -c, -o, -n and -L must be specified.

Example:

multidec -n4 -l9e-9 -c20e-12 -r5.3 -x5e-12 -k0.7 -otest -L5.4

This utility was written by J.S. Roychowdhury for use with the lossy transmission line model [13].