Abstract：With the development of near-field magnetic coupling link, wireless power transmission (WPT) has gained great popularity owing to its characteristics of reliability, convenience and safety. WPT reveals unique technical advantages in special applications that are inconvenient to be supplied by wired power transmission. In essence, the electromagnetic field can be served as the energy carrier as well as the information medium, which means the near-field magnetic coupling WPT can simultaneously transmit power and information (SWPIT) without additional radio frequency links. SWPIT systems apply various digital modulation schemes to improve the telemetry rate and stability, which can reduce the crosstalk between information and power flow. This review has elucidated the development of the digital modulation for near-field magnetic coupling SWPIT systems, including data modulation and circuit implementation, and finally summarized the advantages and disadvantages of different modulation schemes for corresponding applications.
李建国, 张波, 荣超. 近场磁耦合无线电能与信息同步传输技术的发展（上篇）：数字调制[J]. 电工技术学报, 2022, 37(14): 3487-3501.
Li Jian’guo, Zhang Bo, Rong Chao. An Overview of Simultaneous Wireless Power and Information Transfer Via Near-Field Magnetic Links (Part Ⅰ): Digital Modulation. Transactions of China Electrotechnical Society, 2022, 37(14): 3487-3501.
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