New general formulation of the cauchy method for the accurate model extraction of higher order microwave systems

Daniele Traina, Giuseppe Macchiarella, Tapan K. Sarkar

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

It is well known that a Vandermonde matrix generates an ill-conditioned system matrix when applied with finite numerical precision. This deficiency affects the Cauchy method by restricting its application to only lower order systems. This paper presents an innovative and accurate general formulation of the Cauchy method to rectify this limitation and make the Cauchy method suitable for the model extraction of a higher order microwave systems. It has been successfully verified using examples of microwave base-station filters and duplexers.

Original languageEnglish (US)
Pages (from-to)1957-1961
Number of pages5
JournalMicrowave and Optical Technology Letters
Volume49
Issue number8
DOIs
StatePublished - Aug 1 2007

Keywords

  • Cauchy method
  • Condition number
  • Equilibration
  • Microwave devices
  • Modeling
  • Total least squares
  • Vandermonde matrix

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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