A Novel Simultaneous Wireless Power and Information Transfer Strategy Based on Wave Trappers and Partial Power Coils

<title>Abstract</title> <p>Traditional simultaneous wireless power and information transfer (SWPIT) systems face the challenge of balancing power transfer efficiency with high-speed information transmission. Additionally, interference between the power and information transmission paths often reduces system integration and increases design complexity. To address these issues, this paper proposes a novel full-duplex SWPIT strategy that uses LC wave trappers and partial power coils to physically isolate the power and information transmission paths, minimizing mutual interference between power and information transfer. The proposed method employs ASK modulation for information transmission and an SS topology for power transfer, simplifying both the information modulation and power transfer processes while maintaining high performance. Experimental results show that with 54.7 W of power transmission, the system achieves a forward information transmission rate of 200 kbit/s and a backward transmission rate of 600 kbit/s with low bit error rates and efficient full-duplex communication. Compared with existing SWPIT solutions, the proposed method offers improved integration, scalability, and cost-effectiveness, making it a promising solution for wireless power transfer and intelligent terminal communication.</p>