Abstract
A fast and accurate simulation method for high-speed clock trees with buffer insertions is proposed in this paper, where transmission line model is used in all branches of clock trees rather than only in main path. The proposed method is based on two-moment matching technique and can approximate all damping responses, with analytical formulas for time domain responses given. It is shown that this method is significantly more accurate than the Elmore delay model, especially for under damped responses.
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