An Underwater Simultaneous Wireless Power and Analog–Digital Hybrid Signal Transfer System

作者：Bo Luo, Mengyao Wang, Jie Tang, Tiantian Wang, Longlei Bai, Jiang You · 发表于：IEEE Transactions on Power Electronics · 年份：2025 · DOI：10.1109/tpel.2025.3591528 · 被引用次数：4 · 研究领域：Underwater Vehicles and Communication Systems、Energy Harvesting in Wireless Networks、Wireless Power Transfer Systems

An underwater simultaneous wireless power and analog-digital hybrid signal transfer system is proposed in this letter to meet the needs of analog and digital signal transmission in underwater sensor networks in seawater. The system transmits two digital signals and one analog signal through the same coil, meeting the practical needs of multiple signal transmissions, improving the communication rate, and retaining the precision and continuity of analog signals as well as the accuracy of digital signals. The system uses a coaxial coil coupling structure, with the outer ring for power transmission and the inner ring for signal transmission, featuring a simple and compact design. The experimental platform achieved a 400W output power, 1Mbps bidirectional digital signal transmission and 20kHz unidirectional analog signal transmission in seawater, with a transmission efficiency of 90.8%, verifying the feasibility of the proposed theory.