This brief introduces a new method for sampling of transient analog waveforms based on the parallel exponential filters. The signal is fed to the parallel network consisting of resistor-capacitor (RC) circuits, outputs of which are simultaneously sampled. We show that N previous samples of the input signal can be reconstructed from single output samples of N parallel RC circuits. The parallel sampling method increases the sampling rate of the data acquisition system by a factor of N. In particular, the method is useful in increasing the sampling rate of the Flash-type analog-to-digital VLSI circuits. We present the parallel RC network, develop the reconstruction algorithm, and briefly describe a variety of applications such as measurement and reconstruction of pulses produced by ultrawideband transmitters, radiation detectors, and pulse lasers.
|Number of pages||4|
|Journal||IEEE Transactions on Circuits and Systems II: Express Briefs|
|Publication status||Published - 2010|
|MoE publication type||A1 Journal article-refereed|
Olkkonen, H., & Olkkonen, J. (2010). Sampling and reconstruction of transient signals by parallel exponential filters. IEEE Transactions on Circuits and Systems II: Express Briefs, 57(6), 426-429. https://doi.org/10.1109/TCSII.2010.2048375