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ISSCC 2017Session 22 · HARVESTING AND WIRELESS POWERWireless

An Inductively-Coupled Wireless Power-Transfer System that is Immune to Distance and Load Variations

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📋 论文概要

本文提出了一种对距离和负载变化具有免疫性的感应耦合无线能量传输系统,用于生物医学植入物。通过分析和设计,该系统能够在外部线圈与植入线圈距离变化、轴偏移以及负载电流大幅变化时,向植入物提供稳定的电压,从而消除了有损电压限制器和对准磁铁的需求。

💡 主要创新点

重要性
发表年份
ISSCC 2017

🏷 关键词

无线功率传输感应耦合生物医学植入物距离免疫负载变化

📄 原文摘要

University of California, Los Angeles, CA Biomedical implants are often powered by an external source via an inductivelycoupled wireless power link. During actual use the distance between the external and implant coils may change, their axes may misalign, and the load current may change significantly in implants that alternate between monitoring and stimulation. Ideally the wireless power link should deliver a stable voltage to the implant across reasonable ranges of these variations, thereby eliminating a lossy voltage limiter and alignment magnets. We present the analysis and design of a new link architecture to meet all these objectives. It stands apart from similar work in that this link self-regulates against all variations, with no need for a reverse channel. Consider two coupled series RLC resonators driven by a sinusoidal voltage source VS (Fig. 22.7.1). Assume that when uncoupled, both subcircuits resonate at the

👥 作者与机构

Jiacheng Pan, Asad A. Abidi, Dejan Rozgić, Hariprasad Chandrakumar, Dejan Marković

分类:Wireless · 年份:ISSCC 2017