A wireless power transfer system is provided for a peripheral device, including a wireless receiver system in the peripheral device, the wireless receiver system having a receiver antenna configured to receive the wireless power signals and wireless data signals via inductive coupling with the transmission antenna. The receiver antenna includes a first central opening and a shield adjacent the receiver antenna, the shield having therein a second central opening, with a sensor located within both the first and second central openings, the sensor being configured to sense a position of the peripheral device.