Sampling and reconstruction of zero-order hold signals by parallel RC filters

Juuso T. Olkkonen, Hannu Olkkonen

Research output: Contribution to journalArticle

Abstract

In this work we describe a reconstruction algorithm for zero-order hold (ZOH) waveforms measured by a parallel sam-pling scheme. In the method the ZOH signal is fed to a parallel network consisting of resistor-capacitor (RC) filters, whose outputs are sampled simultaneously. The algorithm reconstructs N previous samples of the input signal from output samples of N parallel RC circuits. The method is especially useful in sampling and reconstruction of the ZOH signals produced by the digital-to-analog converters. Using the parallel sampling method the sampling rate of the analog-to-digital converters can be increased by a factor of N. We discuss a variety of applications such as reconstruction of ZOH pulse sequences produced by ultra wide band (UWB) transmitters.
Original languageEnglish
Pages (from-to)153-156
JournalWireless Engineering and Technology
Volume2
Issue number3
DOIs
Publication statusPublished - 2011
MoE publication typeA1 Journal article-refereed

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Keywords

  • Sampling
  • Interpolation
  • UWB
  • Analog-to-Digital Converters
  • Microprocessors
  • VLSI

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