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J.B. Lechevallier MSc (Joeri)

PhD Candidate

About Me

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.

Expertise

Sampling
Transconductance
Electric Power Utilization
Oxides
Bandwidth
Tuning
Operational Amplifiers
Voltage Regulators

Research

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.

Publications

Recent
Bindra, H. S., Lechevallier, J. B., Annema, A. J., Louwsma, S. M., van Tuijl, A. J. M., & Nauta, B. (2017). Range pre-selection sampling technique to reduce input drive energy for SAR ADCs. In IEEE Asian Solid-State Circuits Conference (A-SSCC): proceedings of technical papers (pp. 217-220). Piscataway, NJ: IEEE. DOI: 10.1109/ASSCC.2017.8240255
Lechevallier, J. B., Struiksma, R. E., Sherry, H., Cathelin, A., Klumperink, E. A. M., & Nauta, B. (2015). A forward-body-bias tuned 450MHz Gm-C 3rd-order low-pass filter in 28nm UTBB FD-SOI with >1dBVp IIP3 over a 0.7-to-1V supply. In IEEE International Solid- State Circuits Conference, ISSCC 2015 (pp. 96-98). USA: IEEE Solid-State Circuits Society. DOI: 10.1109/ISSCC.2015.7062943

UT Research Information System

Education

Lab / project supervisor for the Electronic System Design part of Module 11. 

Affiliated Study Programmes

Bachelor

Contact Details

Visiting Address

University of Twente
Faculty of Electrical Engineering, Mathematics & Computer Science
Carré (building no. 15), room 2641
Hallenweg 23
7522NH  Enschede
The Netherlands

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Mailing Address

University of Twente
Faculty of Electrical Engineering, Mathematics & Computer Science
Carré  2641
P.O. Box 217
7500 AE Enschede
The Netherlands