Wake-Up Radio Compliant with IEEE802.11ba for Scavenging Energy Sources Integrated in 18nm FD-SOI CMOS Technology

Wake-up radio technology has emerged as a promising solution to reduce energy consumption in wireless sensor networks by enabling nodes to remain in ultra low-power sleep mode until activated by external requests. This talk presents a comprehensive description of the implementation of a WiFi wake-up radio, compliant with the 802.11ba standard, focusing on the radio architecture, its main components and communication protocols. We review the features of all the sub-components and evaluate the system performance through simulation and prototype implementations in 18nm FD-SOI CMOS technology. Our findings demonstrate that integrating wake-up radios into the main WiFi devices significantly reduces the power consumption enabling scavenging energy sources for simple nodes, or long battery life for more complex devices, ensuring very low latency wake-up time.