An Ultra-Low Power Multivibrator-Based Wake-up Receiver for Wireless Sensor Networks
MetadataShow full item record
Original versionNowbahari, A., Marchetti, L., & Azadmehr, M. (2021, 14. June-31. July). An Ultra-Low Power Multivibrator-Based Wake-up Receiver for Wireless Sensor Networks [Paperpresentasjon]. 2021 IEEE 7th World Forum on Internet of Things (WF-IoT), New Orleans. https://doi.org/10.1109/WF-IoT51360.2021.9595159
In recent years wireless sensor networks (WSNs) have gained significant attention because of their implementation in many different fields. As the nodes in WSNs are typically battery-powered, their lifetime is mainly limited by the sensor nodes power consumption. A typical energy-saving solution consists in implementing wake-up receivers (WuRxs), which are responsible for the sensor node activation only when required. In this work an ultra-low power multivibrator-based WuRx concept is proposed. The WuRx is composed of several input-triggered multivibrators, which generate pulses of fixed duration. These pulses are compared to the input signal through logic gates, which are predefined according to the wake-up call. The sensor node is activated if the codes match. An implementation in TSMC- 180nm CMOS process is proposed and simulated. The WuRx consumes 0.8μW when detecting a 6ms wake-up call signal, and 58.4pW when in idle mode.