Triangularly weighted zero-crossing detector providing ΔΣ frequency-to-digital conversion

M. E. Høvin, T. S. Lande, D. T. Wisland, S. Kiaei

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


It is shown that for delta-sigma (ΔΣ) frequency-to-digital conversion (FDC) there is no need for a ΔΣ modulator, since a limited FM signal itself may be considered as an asynchronous ΔΣ bit-stream. By feeding the limited FM signal directly to a sinc2 ΔΣ decimator, a triangularly weighted zero-crossing counter FDC is introduced, providing ΔΣ noise shaping . The results measured confirm the theory.

Original languageEnglish (US)
Pages (from-to)1121-1122
Number of pages2
JournalElectronics Letters
Issue number13
StatePublished - Jun 19 1997
Externally publishedYes


  • Frequency converters
  • Sigma-delta modulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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