Model order reduction using spline-based dynamic multi-point rational interpolation for passive circuits

Authors:
Mehboob Alam;Arthur Nieuwoudt;Yehia Massoud
Affiliations:
Department of Electrical and Computer Engineering, Rice University 6100 Main St., Houston, USA 77005;Department of Electrical and Computer Engineering, Rice University 6100 Main St., Houston, USA 77005;Department of Electrical and Computer Engineering, Rice University 6100 Main St., Houston, USA 77005
Venue:
Analog Integrated Circuits and Signal Processing
Year:
2007

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Abstract

The efficient modeling of integrated passive components and interconnects is vital for the realization of high performance mixed-signal systems. In this paper, we develop a dynamic multi-point rational interpolation method based on Krylov subspace techniques to generate reduced order models for passive components and interconnects that are accurate across a wide-range of frequencies. We dynamically select interpolation points by applying a cubic spline-based algorithm to detect complex regions in the system's frequency response. The results indicate that our method provides greater accuracy than techniques that apply uniform interpolation points.