Design of RF Energy Harvesting System for IoT-based Continuous Glucose Monitoring

Medical applications relying on Internet of Things (IoT) often call for frequent, costly, and high-risk battery replacements. Radio-frequency energy harvesting (RFEH) can be utilized as alternative source of power to batteries for such applications. It is shown in this paper that glucose level can be measured using RFEH system in its forms of minimally-invasive and non-invasive, thanks to its availability. However, due to relatively small power densities associated to RFEH systems, their design comes with many challenges. The proposed RFEHS operates at LTE bands of 1.8GHz and 2.6GHz in order to supply IoT sensors for glucose monitoring systems. The results confirm that the proposed RFEHS can be successfully used for IoT-based continuous glucose monitoring.