Patent ID: 7212960

Claim:
A circuit simulation system comprising: a processor coupled to a memory, the memory comprising at least: simulator code comprising machine readable instructions executable by the processor; a circuit model configured as input for the simulator code, the circuit model comprising a transmission line model; wherein the transmission line model comprises: a first and a second hybrid model, each hybrid model having a bidirectional port, an input port, and an output port; a forward path model, the forward path model coupled to the output port of the first hybrid model and to the input port of the second hybrid model; a reverse path model, the reverse path model coupled to the output port of the second hybrid model and to the input port of the first hybrid model; a first reflection model coupling from the reverse path model to the forward path model; and a second reflection model coupling from the forward path model to the reverse path model; wherein the processor is configured to execute the machine readable instructions of the simulator code to generate simulation results for a user, and store the simulation results in the memory.