False spectra formation in the differential two-channel scheme of the laser Doppler flowmeter

Denis Lapitan, Dmitry Rogatkin, Saydulla Persheyev, Konstantin Kotliar*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Noise in the differential two-channel scheme of a classic laser Doppler flowmetry (LDF) instrument was studied. Formation of false spectral components in the output signal due to beating of electrical signals in the differential amplifier was found out. The improved block-diagram of the flowmeter was developed allowing to reduce the noise.

Original languageEnglish
Pages (from-to)439-444
Number of pages6
JournalBiomedizinische Technik
Volume63
Issue number4
DOIs
Publication statusPublished - 26 Jul 2018

Keywords

  • false spectrum
  • laser Doppler flowmetry
  • sensitivity
  • signals beating
  • two-channel scheme

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