Voltage regulation on inductive power links for autonomous sensors

This work is focused on the voltage regulation stage of autonomous sensors powered via inductive links. At the receiving network, a rectifier and a voltage regulator are required to provide a DC voltage supply to the autonomous sensor. Three type of voltage regulators are compared from the point of view of the system power efficiency. Both a theoretical analysis and experimental results are presented. Results show that shunt regulators provide the best power efficiency over the two other alternatives, which are series regulators and switching buck regulators.