快速计算频变互连电感电阻的加权平均法

A Weighted Average Method for Efficient Parasitic Inductance and Resistance Extraction

通过引入导体细丝的电流值占总电流的比例作为权重系数,将现有的仅能计算低频互连电感的平均值公式推广到高频情况;并通过分析功耗计算公式,得到类似形式的加权平均公式,可用于计算高频下的互连电阻.分析和数值结果都表明,该方法可适用于全频段下互连电感电阻的计算,与FastHenry相比,在保持精度的同时,计算时间可减少3/4.

Through introducing the current ratio of filament as weight factor,a closed-form average formula can be extended to compute interconnect inductance at high frequency.And the similar formula to compute interconnect resistance can be obtained through analyzing power waste.Theory analysis and numerical results show that this method can be applied to compute impedance at high frequency,greatly decreasing computing time and reserving similar accuracy compared to FastHenry.