An iterative delay model for interconnects with coupling effects

In static timing analysis, the impact of coupling capacitance on delay is usually estimated by scaling the coupling capacitances (often by a factor of 2) and modeling them as grounded. This simple approach has been shown to be overly pessimistic in some cases, while somewhat optimistic in others. The paper proposes an iterative delay model for static timing analysis, which accurately captures the coupling effects through updating Miller factors, and related information of the signals on coupling nodes. Compared with the popular method of switching window computation, our algorithm can perform more efficiently.