Seminar: RF Power Harvesting for Batteryless Wireless Sensing

#Antenna #Wireless #power #transfer

The realization of Internet-of-Things (IoT) relies on a large amount of geographically distributed wireless sensor nodes (WSNs). Traditional power supply cords prevent the large-scale utilization and mobility of the WSNs, while the batteries as substitutes for supply cords are not optimal solutions due to the limited lifetime, high cost, and undesired ecological effects. In this scenario, wireless power harvesting technologies provide a new charging solution to remotely powering WSNs.

This talk will introduce analytical methods for evaluating and designing RF power harvesters. Then efficient rectennas with various characteristics, such as multi-band capability, wide spatial coverage, or wide dynamic power range will be developed and discussed. This talk will also include the rigorous analysis and development of collaborative power harvesters that incorporate multiple sources together, for enhancing the output dc power in ambient power scavenging scenarios. Finally, the applications of the proposed RF power harvesters will be demonstrated in two typical scenarios for batteryless wireless sensing, fully showing their potentials in IoT applications.