A high-speed gated baseline restorer and its implementation in a blood cell volume analyser

E. W. Abel, S. Inglis, Y. Liu, J. J. F. Belch, A. Koop

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    Accurate measurement of the height of individual pulses in a signal that is a.c.-coupled is dependent upon correcting a changing baseline to a constant value. A new fast baseline restorer, using internally triggered gated feedback with gain, has been designed and a version optimized for Gaussian-shaped pulses. Performance is dependent on the magnitudes of both the forward and the feedback gains. The design presented can achieve a 0.5% accuracy in pulse height for a minimum pulse width of 2.5 µs or for 5 µs overlapping pulses as long as the overlap is less than 50%. Typical applications for the baseline restorer include blood cell volume measurement systems, scintillation counters and radiation spectroscopy.
    Original languageEnglish
    Pages (from-to)267-272
    Number of pages6
    JournalMedical Engineering & Physics
    Volume19
    Issue number3
    DOIs
    Publication statusPublished - Apr 1997

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