A 13.56MHz Wireless Power and Data Transfer Receiver Achieving 75.4% Effective-PowerConversion Efficiency with 0.1% ASK Modulation Depth and 9.2mW Output Power

📋 论文概要

该论文提出了一种工作在13.56MHz的无线功率与数据传输接收器，采用振幅键控（ASK）调制，实现了0.1%的极小调制深度下数据解调，同时保持75.4%的有效功率转换效率。解决了植入式和可穿戴设备中无线功率传输与低功耗、低误码率数据通信的兼容性问题。

💡 主要创新点

• 实现了0.1%的极小ASK调制深度下的可靠数据解调，有效降低对功率传输效率的影响。
• 在接收器设计中同时优化功率转换效率和数据传输性能，达到75.4%的有效功率转换效率。

🏷 关键词

📄 原文摘要

C.-J. Richard Shi1,2 Fudan University, Shanghai, China University of Washington, Seattle, WA 1 2 Implantable and wearable devices require both wireless power transfer (WPT) and wireless data transmission (WDT) in biomedical systems [1-3], e.g., neural recording applications [4]. Very often, amplitude modulation (AM) is preferred in these applications due to its lower power consumption and less circuit complexity in (de)modulation. To achieve the required bit-error rate (BER) lower than 10-3, a large modulation depth (MD), typically in the range of 8% to 100%, is needed. Unfortunately, as shown in Fig. 8.4.1, the available power on the coil is reduced quadratically with respect to 1 – MD during the low-amplitude time interval (t2). Large MD leads to low effective power-conversion efficiency (EPCE), defined as the combined efficiency of modulation and rectification of the WPT receiver. One solution to this problem is to separate the power and data link using two different

👥 作者与机构

Yu Wang1, Dawei Ye1, Liangjian Lyu1, Yingfei Xiang1, Hao Min1,