An FDM-Based Simultaneous Wireless Power and Data Transfer System Functioning With High-Rate Full-Duplex Communication

This article proposed a novel scheme integrating full-duplex communication into high-power wireless power transfer systems. The power and data are transferred through the same inductive link. A pair of coupling coils with taps are employed to omit the trap inductors that are widely employed in forme...

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Bibliographic Details
Published in:IEEE transactions on industrial informatics 2020-10, Vol.16 (10), p.6370-6381
Main Authors: Yao, Yousu, Cheng, Haisong, Wang, Yijie, Mai, Jianwei, Lu, Kaixing, Xu, Dianguo
Format: Article
Language:English
Subjects:
Band-pass filters
Capacitors
Circuit design
Coils
Communication
Couplings
Crosstalk
Data transfer
Data transfer (computers)
Duplexers
Frequency division multiplexing
Frequency division multiplexing (FDM)
Frequency shift keying
frequency-shift keying (FSK)
full-duplex communication
Inductors
Performance enhancement
simultaneous wireless power and data transfer (SWPDT)
Wireless power transmission
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Summary:This article proposed a novel scheme integrating full-duplex communication into high-power wireless power transfer systems. The power and data are transferred through the same inductive link. A pair of coupling coils with taps are employed to omit the trap inductors that are widely employed in former simultaneous wireless power and data transfer (SWPDT) systems. The proposed scheme can reduce the system cost and size and improve the power transfer efficiency. The power and bidirectional data are transmitted using carriers of different frequencies. Frequency division multiplexing technique is utilized for full-duplex communication. The duplexer is carefully designed to separate the transmitted and received data signals. The circuit model of the system is built to analyze the power and data transfer performance. The crosstalk between the power and data transfer is also discussed. To improve the performance of data transfer, the method to determine the optimal coil tap position is proposed. A 300-W SWPDT prototype with a full-duplex data rate of 500 kb/s was built to demonstrate the feasibility of the proposed system.
ISSN:1551-3203
1941-0050
DOI:10.1109/TII.2020.2967023