Construction of Macromodel in Time Domain for Power Distribution Network Using Modified Gram-Schmidt Orthogonal
修正Gram-Schmidt正交化构建电源分配网络时域宏模型

The ill-conditioned normal equations bring numerical problems in construction of macromodel in time domain for power distribution networking using rational function approximation. This paper presents the superdefinite equations coefficient matrix can be decomposed in QR form using modified Gram-Schmidt orthogonal and the accurate passive macromodel in time domain can be constructed based on Bernoulli polynomial root finding method and the formulae for stability and passivity. Finally,a broadband passive macromodel constructed from DC to 1GHz is given to demonstrate the validity and accuracy of the method.