Ftd: frequency to time domain conversion for reduced-order interconnect simulation
Ftd: frequency to time domain conversion for reduced-order interconnect simulation
复制标题
Ftd：用于降阶互连仿真的频域到时域转换
DOI：
10.1109/81.917989
复制
发表时间：
2001
影响因子：
5.1
通讯作者：
A. Strojwas
中科院分区：
文献类型：
--
作者：
Y. Liu;L. Pileggi;A. Strojwas
模型降阶是解决部分互连仿真问题的宝贵工具，但同样重要的问题是将这些频域表示与用于非线性瞬态仿真的离散时域模型连接起来。人们已经提出了各种递归卷积方法，在分段线性电压波形的假设下为该界面问题提供了精确的解决方案。本文提出了一种频域到时域转换算法 ftd（频域到时域），它代表了一种看似最优的递归卷积形式。我们证明 ftd 为分段线性输入提供了精确的精度。此外，ftd 算法简单，易于针对特定应用程序实现。
Model order reduction is an invaluable tool for solving part of the interconnect simulation problem, but an equally important problem is to interface these frequency-domain representations with the discrete time domain models that are used for nonlinear transient simulation. Various recursive convolution methods have been proposed which provide an exact solution to this interface problem under the assumption of piecewise linear voltage waveforms. This paper proposes a frequency to time-domain conversion algorithm, ftd (frequency to time domain), that represents a seemingly optimal form of recursive convolution. We demonstrate that ftd provides exact accuracy for piecewise linear inputs. Moreover, ftd is algorithmically straight-forward and simple to implement for a specific application.