Multiple FSK Data and Power Transmission System using Magnetic Resonance Wireless Power Transfer

This paper presents a multiple Frequency Shift Keying (FSK) transmission system which can simultaneously transmit power and data using magnetic resonance wireless power transfer (MR-WPT). The main challenge of this paper is that the MR-WPT with the Automatic Tuning Assist Circuit (ATAC) enables a multiple FSK communication toward moving objects. The proposed system with ATAC can maintain the resonant state even though the driving frequencies of the transmitter slightly differ from the resonant frequency. Therefore, this characteristic means that it enables simultaneous transmission of power and FSK modulated data at multiple frequencies without a sharp decline in power transmission efficiency. The proposed system is implemented, and it shows double bit data transmission at the same symbol rate with multiple FSK modulation.