Harnessing Energy for Wearables: A Review of Radio Frequency Energy Harvesting Technologies

Wireless energy harvesting enables the conversion of ambient into electrical power for small wireless electronic devices. This technology offers numerous advantages, including availability, ease implementation, functionality, and cost-effectiveness. Radio frequency (RFEH) is a specific type that transfer by utilizing RF signals. RFEH holds immense potential extending lifespan sensors wearable electronics require low-power operation. However, despite significant advancements in self-sustainable devices, challenges persist. literature review focuses on three key areas: materials, antenna design, management, to delve research comprehensively. By providing an up-to-date findings RFEH, this aims shed light critical challenges, opportunities, existing limitations. Moreover, it emphasizes importance further development advance its state-of-the-art offer vision future trends technology.