J.B. Lechevallier MSc (Joeri)

The “Slow Wireless” project focuses on radio links in wireless sensor networks that need low data rates (in the order of bytes/second). Examples include inventory logistics, structural monitoring, warning systems, patient monitoring, precision agriculture, wildlife observation, etc. The conventional approach is to use duty cycling: turn the radio in the node off for most of the time and transmit the data in short bursts to save energy. The radio is often a fairly standard radio optimized for low power duty cycled operation. Because of timing uncertainties in the receive and transmit time slots, either should be turned on longer than necessary. To circumvent this problem, and to reach lower receiver power in general, there has been high scientific interest in ultra-low power (μW) receivers, which have been realized with varying performance. Similarly, there has been attention for wake-up receivers: receivers that use very little power and ‘listen’ if they should wake up the main radio. A major problem for published low power receivers is that they are not very robust to interference, most of them not at all. Ultra Wide Band techniques can solve this, but the power consumption would be too high. In this project, we aim to develop a narrow-band radio for wireless sensor nodes that has low enough power consumption, but is much more robust to interference compared to conventional ultra-low power radios.

Physics & Astronomy

# Crystal Oscillators
# Crystals
# Electric Potential
# Resonators

Engineering & Materials Science

# Crystal Oscillators
# Crystals
# Energy Utilization
# Low Pass Filters