Detail výsledku
A Novel Band-Pass Sigma-Delta Modulator for Capacitive Pressure Sensing
Vrba Radimír, prof. Ing., CSc., UMEL (FEKT)
Fujcik Lukáš, doc. Ing., Ph.D., UMEL (FEKT)
Michaeli Linus, prof. Ing., DrSc.
Pavlík Michal, Ing., Ph.D., UMEL (FEKT), UREL (FEKT)
Zavoral Pavel, Ing., FEKT (FEKT), UMEL (FEKT)
Forejtek Jiří, Ing., FEKT (FEKT), UMEL (FEKT)
The paper deals with bandpass sigma-delta modulator (BP SDM), which is used for conversion of signal from capacitive pressure sensor. This approach is absolutely new and unique, because this kind of modulators is utilized
only for wireless and video applications. The main advantage
of BP SDM is due to its defined band. That is why it is resistant against offsets of its subcuircits. Another important advantage
is low power consumption, since the BP SDM digitizes only narrow band instead of whole Nyquist band with similar dynamic range. The paper shows basic ideas of this approach and simulation results with ideal and real modulator. The main
stages are implemented in switched-capacitor (SC) technique. The modulator layout is presented as well.
bandpass, sigma-delta, modulator, pressure sensor
@inproceedings{BUT28628,
author="Jiří {Háze} and Radimír {Vrba} and Lukáš {Fujcik} and Linus {Michaeli} and Michal {Pavlík} and Pavel {Zavoral} and Jiří {Forejtek}",
title="A Novel Band-Pass Sigma-Delta Modulator for Capacitive Pressure Sensing",
booktitle="IEEE Proceedings of the Second International Conference on Systems, ICONS 2007",
year="2007",
pages="74--78",
publisher="IEEE Computer Society",
address="New York",
isbn="0-7695-2807-4"
}