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Sensors 2018, 18(1), 86; doi:10.3390/s18010086

A Tuned-RF Duty-Cycled Wake-Up Receiver with −90 dBm Sensitivity

1
Department of Electrical Engineering and Information Technology, Leipzig University of Applied Sciences, Wächter Street 13, 04107 Leipzig, Germany
2
Department of Electrical Engineering and Information Technology, Chemnitz University of Technology, Reichenhainer Street 70, 09126 Chemnitz, Germany
*
Author to whom correspondence should be addressed.
Received: 6 December 2017 / Revised: 21 December 2017 / Accepted: 27 December 2017 / Published: 29 December 2017
(This article belongs to the Special Issue Low Power Embedded Sensing: Hardware-Software Design and Applications)
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Abstract

A novel wake-up receiver for wireless sensor networks is introduced. It operates with a modified medium access protocol (MAC), allowing low-energy consumption and practical latency. The ultra-low-power wake-up receiver operates with enhanced duty-cycled listening. The analysis of energy models of the duty-cycle-based communication is presented. All the WuRx blocks are studied to obey the duty-cycle operation. For a mean interval time for the data exchange cycle between a transmitter and a receiver over 1.7 s and a 64-bit wake-up packet detection latency of 32 ms, the average power consumption of the wake-up receiver (WuRx) reaches down to 3 μ W . It also features scalable addressing of more than 512 bit at a data rate of 128 k bit / s −1. At a wake-up packet error rate of 10 2 , the detection sensitivity reaches a minimum of 90 dBm . The combination of the MAC protocol and the WuRx eases the adoption of different kinds of wireless sensor networks. In low traffic communication, the WuRx dramatically saves more energy than that of a network that is implementing conventional duty-cycling. In this work, a prototype was realized to evaluate the intended performance. View Full-Text
Keywords: fast settling; wake-up receivers; event-triggered; on-demand; ultra-low power; MAC fast settling; wake-up receivers; event-triggered; on-demand; ultra-low power; MAC
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Bdiri, S.; Derbel, F.; Kanoun, O. A Tuned-RF Duty-Cycled Wake-Up Receiver with −90 dBm Sensitivity. Sensors 2018, 18, 86.

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