A Development of WPT Devices for Wireless-Powered Small Sensors for Home Health Care

Recently, with the aging population and the shift from hospital-based medicine to home healthcare, Internet of Things (IoT) devices have become one of the technologies that will play an important role. It is expected that IoT devices will be used in remote medicine and the utilization of medical data. However, there are various restrictions on device operation, which can be improved by wireless power transfer. In this research, we develop a transmission/reception antenna and a rectifier circuit for a wireless power transfer system to secure power for multiple small IoT devices. In this paper, we report on the design and fabrication of the transmission/reception antenna and rectifier circuit, and power transmission experiments.