This paper presents the body-coupled power transmission and ambient energy harvesting ICs. The ICs utilize human body-coupling to deliver power to the entire body, and at the same time, harvest energy from ambient EM waves coupled through the body. The ICs improve the recovered power level by adapting to the varying skin-electrode interface parasitic impedance at both the TX and RX. To maximize the power output from the TX, the dynamic impedance matching is performed amidst environment-induced variations. At the RX, the Detuned Impedance Booster (DIB) and the Bulk Adaptation Rectifier (BAR) are proposed to improve the power recovery and extend the power coverage further. In order to ensure the maximum power extraction despite the loading variations, the Dual-Mode Buck-Boost Converter (DM-BBC) is proposed. The ICs fabricated in 40 nm 1P8M CMOS recover up to 100 μW from the body-coupled power transmission and 2.5 μW from the ambient body-coupled energy harvesting. The ICs achieve the full-body area power delivery, with the power harvested from the ambiance via the body-coupling mechanism independent of placements on the body. Both approaches show power sustainability for wearable electronics all around the human body.

中文翻译：

---

使用人体耦合功率传输和能量收集 IC 为身体区域供电

本文介绍了身体耦合功率传输和环境能量收集 IC。这些 IC 利用人体耦合向整个身体供电，同时从通过身体耦合的环境电磁波中获取能量。这些 IC 通过适应 TX 和 RX 处不断变化的皮肤电极界面寄生阻抗来提高恢复功率水平。为了最大限度地提高 TX 的功率输出，在环境引起的变化中执行动态阻抗匹配。在 RX，提出了失谐阻抗升压器 (DIB) 和批量自适应整流器 (BAR)，以改善功率恢复并进一步扩展功率覆盖范围。为了在负载变化的情况下确保最大功率提取，提出了双模式降压-升压转换器 (DM-BBC)。采用 40 nm 1P8M CMOS 制造的 IC 从体耦合功率传输中恢复高达 100 μW，从环境体耦合能量收集中恢复高达 2.5 μW。这些 IC 实现了全身区域的功率传输，通过与身体放置无关的身体耦合机制从环境中收集能量。这两种方法都显示了人体周围可穿戴电子设备的电源可持续性。