A Simultaneous Wireless Power and Full-Duplex Data Transfer System Over a Single Inductive Link Achieving 17/3.4Mb/s and 61.1% Efficiency for Miniature Biomedical Implants

📋 论文概要

该论文提出了一种单电感链路的无线功率与全双工数据传输系统，工作于40.68MHz，同时实现17Mb/s上行（RLK）和3.4Mb/s下行（Instant-CSK）数据速率，峰值效率61.1%，输出功率>50mW，消除了传统ASK/LSK之间的权衡，适用于植入式医疗设备。

💡 主要创新点

• 提出共振长度键控（RLK）调制方式，实现高速上行数据传输。
• 提出瞬时载波暂停键控（Instant-CSK）调制方式，实现下行数据传输且不影响功率传输。
• 在单电感链路上同时实现无线功率和全双工数据通信，克服了传统设计中速率与效率之间的权衡。

🏷 关键词

📄 原文摘要

Abstract A single-link wireless power and full-duplex data transfer system is presented. Operating at 40.68MHz, it delivers >50mW maximum output power with 61.1% peak end-to-end efficiency while supporting 17Mb/s uplink using resonance-length keying (RLK) and 3.4Mb/s downlink using instant-carrier-suspension keying (Instant-CSK). The design removes ASK/LSK trade-offs and achieves an aggregate data rate of half the carrier frequency using 180nm TX/RX chips and 15-/8-mm-diameter coils. Wireless power and data transfer (WPDT) holds great promise for next-generation implantable medical devices (IMDs), such as brain-machine interfaces and artificial retina

👥 作者与机构

Tianqi Lu, Sijun Du

Delft University of Technology, Delft, The Netherlands