Mitigation of Metal Body Proximity Effect in Magnetically Coupled HF RFID Systems

IF 2.3 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE journal of radio frequency identification Pub Date : 2024-02-22 DOI:10.1109/JRFID.2024.3368882
Somnath Mukherjee;Debidas Kundu;Ashis Khan
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Abstract

The deleterious effect of eddy current due to the presence of a metal in magnetically coupled resonant high-frequency radio frequency identification (HF RFID) systems is addressed, and remediation using a resonant loop is discussed. The proposed solution is much more economic than conventional ferrite-based shielding. The resonant loop, which is referred to as auxiliary coil in this paper, does not increase the profile of the existing HF RFID tag. Analysis is carried out using full-wave numerical simulation resulting in an equivalent circuit model, and validated with measurements. The technique is illustrated through applications like HF RFID tags in close proximity to a metal seal required for induction sealing, as well for extending read range of readers compelled to operate near metallic environment.
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缓解磁耦合高频射频识别系统中的金属体接近效应
本文探讨了在磁耦合谐振高频射频识别(HF RFID)系统中由于金属的存在而产生的涡流有害影响,并讨论了使用谐振回路进行补救的问题。所提出的解决方案比传统的铁氧体屏蔽更经济。谐振回路在本文中被称为辅助线圈,不会增加现有高频射频识别(RFID)标签的外形尺寸。分析采用全波数值模拟,得出等效电路模型,并通过测量进行验证。该技术的应用实例包括高频射频识别(RFID)标签靠近感应密封所需的金属密封件,以及扩大阅读器的读取范围,这些阅读器必须在金属环境附近工作。
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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