采用双向区域重叠组合法,基于三维层次式块边界元法实现了芯片级的互连电容提取.该方法将芯片切分为大量小规模区域。用全局场求解器计算各子区域电容矩阵,可方便地组合出整个芯片的电容矩阵;同时分析了其计算量和精度,并进行了并行计算实验.对实际版图结构的数值实验验证了有关分析结论,表明该方法高效、可靠、并行性能好.
A two direction overlap-combination method is adopted to implement the chip-level capacitance extraction while using the 3D hierarchical block boundary element method as field solver. The proposed method cuts a chip into a great deal of small-scale regions, and then combines the capacitance matrices for all regions to get the full capacitance matrix. The computational accuracy and speed of the overlap-combination method are also analyzed, and parallel experiments were carried out. Numerical experiments with actual layout structures show that the proposed method is effective, reliable and with high parallelity.