Wireless Power Transfer (WPT) and Communication

The wireless body area network (WBAN) includes up to ten sensor nodes and an external control unit to synchronize the wireless power transfer and communication. In Chap. 4, the control unit (CU) architecture to drive a spherical array transducer is presented along with details about the front-end and back-end electronics. In Chap. 5, the transponder (TR) architecture is shown with important considerations on energy harvesting and speed limits due to transducer bandwidth. Here, the interaction between the control unit and the transponder is presented. To show advantages and limitations imposed by ultrasound (US), two prototypes for the transponder are built.