Simulation and Verification Synchronous Transmission System of Wireless Power and Signal Based on FSK

A method of digital signals transmission based on energy flow, aiming at solving message transmission in Wireless Power System (WPT) has been proposed. To realize the transmission of power and information simultaneously, the feature of the message is pouring into the energy wave without appending any auxiliary circuits but sharing the same inductor channel. At the receiver end, system could not only fetch the energy, but also the demodulate unit could recover signals according to the specific features. Through the actual test and simulation, it is basically in agreement with the theoretical one. Compared Frequency-shift keying (FSK) and Amplitude-shift keying modulation, while the SNR is 3dB, FSK is better for decreasing BER nearly 8%, and when the distance is fixed, take 40cm for example, the effiency of the system is enhanced almost 12% when take FSK method.