Abstract:

In the modeling and simulation for electrically large interconnect of high-speed circuit,the high simulation efficiency of Broadband Delay-based Macromodel is becoming more of a concern,but the existing methods of delay estimation are time-consuming,which severely limit the overall macromodeling efficiency.For this,an efficient delay-estimation method based on the IFT is presented in the paper.The efficient method not only is able to estimate multiple delays from tabulated frequency data,but also can identify the dominant delay terms for optimizing the modeling process.This method is implemented in MATLAB and compared with the Gabor transform-based method mostly used in frequency domain.The experimental results show that the proposed method greatly improves the efficiency of delay estimation and achieves high accuracy in use of broadband frequency domain data.

Key words: signal integrity;delay based macromodel;delay estimation;inverse Fourier transform