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Sampling and Reconstruction of Zero-Order Hold Signals by Parallel RC Filters

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DOI: 10.4236/wet.2011.23022    6,188 Downloads   12,521 Views   Citations

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.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

J. Olkkonen and H. Olkkonen, "Sampling and Reconstruction of Zero-Order Hold Signals by Parallel RC Filters," Wireless Engineering and Technology, Vol. 2 No. 3, 2011, pp. 153-156. doi: 10.4236/wet.2011.23022.

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