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采用二维时域有限差分法(2D-FDTD)精确计算了高速集成电路芯片内互连线的频变等效电路参数.有耗吸收边界条件和非均匀渐变网格技术的提出和应用减少了空间网格的数目,用时间序列预测的方法来预测时域信号或提取传输线频域参数大大减少了FDTD模拟时间,明显提高了计算效率.传输线特性的计算考虑了导体和硅基片损耗,计算结果与其他方法及测量结果比较,一致性较好
The frequency-dependent equivalent circuit parameters of interconnects in high-speed integrated circuit chips are precisely calculated by using two-dimensional finite-difference time-domain (2D-FDTD) method. The proposed and applied methods of dissipative boundary conditions and non-uniform graded grids reduce The number of spatial grids, the prediction of time-domain signals by time-series prediction or the extraction of the frequency-domain parameters of the transmission line greatly reduce the FDTD simulation time and significantly improve the computational efficiency. The calculation of the transmission line characteristics takes into account the losses of the conductor and the silicon substrate, Results and other methods and measurement results, consistency is better