Relative inductance extraction method

A new relative inductance extraction method is defined to solve massive coupled RLC interconnects. The new relative inductance generates a sparse inductance matrix. Therefore, it enables modeling of large circuits with reasonable speed and accuracy. It maintains accuracy for all frequencies, even for the cases that there are no near return paths. Simulations done for a 16 bit bus with each line divided into 16 segments show that this method is 4 times faster than using the dense inductance matrix.