采用分段环形天线的毫米尺寸远程供电无线植入物的SAR降低和链路优化

2011 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems Pub Date : 2011-03-07 DOI:10.1109/BIOWIRELESS.2011.5724339

M. Mark, T. Bjorninen, L. Ukkonen, L. Sydanheimo, J. Rabaey

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引用次数: 59

摘要

本文描述了一种利用分段环路发射天线降低毫米尺寸皮质植入物无线电源链路平均比吸收率(SAR)，同时降低整体链路损耗的方法。进一步表明，对于给定的接收天线尺寸和天线间距，存在最小化链路损耗的最佳发射天线尺寸-频率对。一项针对最小损耗优化的毫米尺寸皮质植入物的无线链路的案例研究表明，与传统环形天线相比，该植入物的平均SAR降低了30%以上，链路损耗改善了约10%，从而使植入物的可用功率增加了57%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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SAR reduction and link optimization for mm-size remotely powered wireless implants using segmented loop antennas

This paper describes an approach to reduce the average specific absorption rate (SAR) of a wireless power link for mm-size cortical implants, while decreasing the loss of the overall link by using a segmented loop transmit antenna. It further shows that, for a given receive antenna size and antenna separation, an optimum transmit antenna size-frequency pair that minimizes the link loss exists. A case study of a wireless link for a mm-size cortical implant optimized for minimum loss shows a reduction of the average SAR of more than 30 %, and a link loss improvement of approximately 10 %, leading to a 57 % increase in power available to the implant compared to a conventional loop antenna.

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来源期刊

2011 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems

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