Using quartz resonators for maximizing wake-up range in wireless wake-up receivers

Separate wake-up receiver circuits for wireless sensor nodes combine the advantage of permanent accessibility with a very low current consumption, enabling nodes to work for several years. In a sleeping node incoming signals are passively demodulated and low-pass filtered. Till now we used an R-C ci...

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Hauptverfasser: Gamm, G. U., Ungan, T., Reindl, L. M.
Format: Tagungsbericht
Sprache:eng
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Zusammenfassung:Separate wake-up receiver circuits for wireless sensor nodes combine the advantage of permanent accessibility with a very low current consumption, enabling nodes to work for several years. In a sleeping node incoming signals are passively demodulated and low-pass filtered. Till now we used an R-C circuit for filtering. In this work a quartz resonator is used between its parallel and serial resonance as an inductance with high Q-factor. This way higher voltages after demodulation compared to the R-C circuit could be reached. Since a higher voltage results in an increased wake-up signal detection, the wake-up range of the node can be extended.
DOI:10.1109/EFTF.2012.6502334