SWIPT Base Stations for Battery-Free, Wirelessly Powered IoT Networks: A Review on Architectures, Circuits and Technologies

The wirelessly driven Internet of Things (IoT) is expected to revolutionize sensor applications by replacing conventional wired systems with ad hoc wireless sensor networks. IoT-based sensor networks allow the addition and expansion of new sensor nodes without the additional costs and hassles related to the use of new wires, including expensive and time-consuming electromagnetic (EM) interference analysis. Also, it contributes to reducing the system’s weights and overheads due to the elimination of unnecessary parts, such as the redundant wiring of multiple sensor nodes. Such versatility and flexibility are of particular interest to wireless sensing systems operating in extreme or harsh environments, such as in space
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