A passivity criterion for fixed-point state-space digital

Choon Ki Ahn, Sung Tae Jung

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


This paper proposes a new criterion for passivity of fixed-point state-space digital filters with saturation arithmetic and external interference. The criterion guarantees not only exponentially stability, but also passivity from the external interference to the output vector. The criterion takes the form of linear matrix inequality (LMI) and, hence, is computationally tractable. An illustrative example is given to demonstrate the effectiveness of the proposed criterion.

Original languageEnglish
Pages (from-to)982-986
Number of pages5
JournalInternational Journal of Physical Sciences
Issue number5
Publication statusPublished - 2011 Mar 4
Externally publishedYes


  • Digital filters
  • Exponential stability
  • Finite wordlength effects
  • Linear matrix inequality (LMI)
  • Passivity approach

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy(all)


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