A Sub-40µW 5Mb/s Magnetic Human Body Communication Transceiver Demonstrating Trans-Body Delivery of High-Fidelity Audio to a Wearable In-Ear Headphone

📋 论文概要

该论文提出了一种亚40微瓦、5兆比特每秒的磁人体通信收发器，实现了跨身体传输高保真音频，解决了传统射频体域网功耗高、电池寿命短的问题。

💡 主要创新点

• 采用磁人体通信技术替代传统射频，显著降低人体周围的路径损耗和功耗。
• 实现了亚40微瓦的超低功耗和5兆比特每秒的高数据速率，支持高保真音频传输。

🏷 关键词

📄 原文摘要

Emerging wearable devices such as wireless headphones, smart glasses, and medical monitors require increasingly high-throughput wireless communications at ultra-low-power. Since far-field RF has significant path loss around the human body (e.g., up to 70dB at 2.4GHz), most RF body-area-network (BAN) systems such as Bluetooth Low Energy (BLE) have significant energy-expensive amplification requirements consuming milliwatts of power, and thus do not meet the energy demands of emerging small devices. Popular wireless earbuds, for example, only achieve a battery life of a few hours. Exasperatingly, emerging highfidelity streaming audio and video content requires higher data rates than what BLE can currently accommodate. Human body communication (HBC) systems, for example ones based on electric fields (eHBC), in theory have lower path loss and can thus potentially offer more efficient links [1-2]. However, measurements

👥 作者与机构

Jiwoong Park, Patrick P. Mercier

University of California, San Diego, La Jolla, CA