Efficient Calculation of Power Bus Impedance using a Fast Algorithm Together with a Segmentation Method

Zhi Liang Wang, Osami Wada, Yoshitaka Toyota, Ryuji Koga

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Power bus noise prediction in multilayer printed circuit boards requires an accurate estimation of the power bus impedance. We have previously developed a fast algorithm for efficiently and accurately calculating the impedance of a rectangular power bus structure, based on a cavity mode model. In this paper, we show that the fast algorithm can also be easily utilized for a right-angled triangular power bus structure. Together with a segmentation method, the fast algorithm can then be extended to calculate the impedances of more complicated power bus structures whose patterns consist of several segments of rectangles and/or right-angled triangles. Fast computation of the S-parameters and good agreement between the calculated results and measurements for various boards demonstrated the efficiency and accuracy of using the fast algorithm together with the segmentation method as a powerful technique to estimate the power bus impedance.

Original languageEnglish
Pages (from-to)1185-1192
Number of pages8
JournalIEEJ Transactions on Fundamentals and Materials
Volume124
Issue number12
DOIs
Publication statusPublished - 2004

Keywords

  • cavity-mode model
  • efficient calculation of power bus impedance
  • power bus resonance
  • segmentation method

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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