Full Duplex Communication Based on Partial Power Coil in Inductive Coupling Power Transfer System

In this paper, a novel parallel transmission method of power and signal based on power transmission coupler (sharing channel) is proposed for full duplex communication. The partial power magnetic coupler and the power compensation capacitors form partial power resonance network which has the function of high frequency wave trapper (passive band pass filters). So the effect on power and signal transmission is isolated without additional wave trapper. According to the characteristic of the double resonance frequencies of signal transmission circuit, the bidirectional transmission of the signal is operated at different resonance frequency points. So forward and reverse transmission channels are separated by each other and full duplex communication is realized. The proposed method was tested on experimental apparatus. The experimental result proved that it's reliable for full duplex communication and parallel transmission of power and signal.