RF wireless energy transfer (WET) offers a sustainable solution for powering massive IoT networks by addressing the limitations of small batteries and the high costs of maintenance in remote or embedded devices. While RF-WET enables long-distance, simultaneous charging of multiple devices, its end-to-end power transfer efficiency remains low due to inherent energy losses and safety concerns. To overcome these challenges, the integration of green power beacons (gPBs) that autonomously harvest ambient energy can reduce operational costs and carbon footprints while ensuring ubiquitous charging coverage. Future advancements require optimizing gPB deployment, developing efficient protocols for scarce energy periods, and establishing metrics to balance system performance with environmental sustainability.
Source: https://www.6gflagship.com/news/rf-wireless-energy-transfer-driving-sustainable-iot/
Keywords: RF energy harvesting, green power beacons, sustainable IoT, wireless power transfer, energy beamforming