Design procedure for wireless power transfer to integrated circuit

This paper designs wireless power transfer systems using PCB transmitter (Tx) coil and on-chip receiver (Rx) coil. The receiver on-chip coil has 3 mm outer dimension and the receiver assumes 3.3V/100 mA power drawing. The design procedure decouples Tx optimization and Rx optimization, allowing both Tx and Rx can have the highest figure-of-merit. Full wave electromagnetic simulation illustrates the design concept.