Parameter identification of transfer functions using an improved vector fitting method

W. Wang, L. Zhang, Q. Li, W.H. Siew

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

The paper presents an improved vector fitting method for the approximation of the non-flat amplitude-frequency response curve of an antenna used in near-field measurements. The method introduces a first order derivative and a post-multiplication of the coefficient matrix by a diagonal matrix to the standard vector fitting method. Simulation and application results showed that the improved methodology can approximate the finer details of the actual frequency response curve better. It also produces a higher fitting accuracy when compared to the general vector fitting method. The improved method also has the advantage of requiring a smaller sample size in the frequency domain.
Original languageEnglish
Title of host publicationAsia-Pacific Symposium on Electromagnetic Compatibility and 19th International Zurich Symposium on Electromagnetic Compatibility, 2008. APEMC 2008
PublisherIEEE
Pages375-378
Number of pages3
ISBN (Print)9789810806293
DOIs
Publication statusPublished - May 2008
EventAsia-Pacific Symposium on Electromagnetic Compatibility and 19th International Zurich Symposium on Electromagnetic Compatibility, 2008. APEMC 2008 - Singapore, Singapore
Duration: 19 May 200823 May 2008

Conference

ConferenceAsia-Pacific Symposium on Electromagnetic Compatibility and 19th International Zurich Symposium on Electromagnetic Compatibility, 2008. APEMC 2008
CountrySingapore
CitySingapore
Period19/05/0823/05/08

Keywords

  • antennas
  • frequency response
  • matrix algebra
  • coefficient matrix
  • diagonal matrix
  • first order derivative
  • frequency domain
  • frequency response curve
  • near-field measurements
  • nonflat amplitude-frequency response curve
  • parameter identification
  • standard vector fitting method
  • transfer functions
  • vector fitting method

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  • Cite this

    Wang, W., Zhang, L., Li, Q., & Siew, W. H. (2008). Parameter identification of transfer functions using an improved vector fitting method. In Asia-Pacific Symposium on Electromagnetic Compatibility and 19th International Zurich Symposium on Electromagnetic Compatibility, 2008. APEMC 2008 (pp. 375-378). IEEE. https://doi.org/10.1109/APEMC.2008.4559890