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受自然启发的蜘蛛形状 UHF RFID 读写器天线，适用于物联网和医疗保健应用。

Nature-inspired spider web shaped UHF RFID reader antenna for IoT and healthcare applications.

机构信息

Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China (UESTC), Huzhou, China.

Department of Electrical Engineering and Technology, Government College University Faisalabad (GCUF), Faisalabad, Pakistan.

出版信息

Sci Rep. 2023 Aug 28;13(1):14017. doi: 10.1038/s41598-023-39825-9.

DOI:10.1038/s41598-023-39825-9
PMID:37640780
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10462659/
Abstract

This paper proposes a nature-inspired spider web-shaped ultra-high frequency (UHF) radio frequency identification (RFID) reader antenna and battery-free sensor-based system for healthcare applications. This antenna design consists of eight concentric decagons of various sizes and five straight microstrip lines.These lines are connected to the ground using 50 [Formula: see text] resistors from both ends, except for one microstrip line that is reserved for connecting a feeding port. The reader antenna design features fairly strong and uniform electric and magnetic field characteristics. It also exhibits wideband characteristics, covering whole UHF RFID band (860-960 MHz) and providing a tag reading volume of 200 [Formula: see text] 200 [Formula: see text] 20 mm[Formula: see text]. Additionally, it has low gain characteristics, which are necessary for the majority of nearfield applications to prevent the misreading of other tags. Moreover, the current distribution in this design is symmetric throughout the structure, effectively resolving orientation sensitivity issues commonly encountered in low-cost linearly polarized tag antennas. The measurement results show that the reader antenna can read medicine pills tagged using low-cost passive/battery-free RFID tags, tagged expensive jewelry, intervenes solution, and blood bags positioned in various orientations. As a result, the proposed reader antenna-based system is a strong contender for near-field RFID, healthcare, and IoT applications.

摘要

本文提出了一种受自然启发的蜘蛛网形超高频（UHF）射频识别（RFID）阅读器天线和基于免电池传感器的系统，用于医疗保健应用。该天线设计由八个不同大小的同心十边形和五条直微带线组成。这些线的两端通过 50 [Formula: see text] 电阻与地相连，除了一条微带线用于连接馈电端口。阅读器天线设计具有相当强且均匀的电场和磁场特性。它还具有宽带特性，覆盖整个 UHF RFID 频段（860-960 MHz），并提供 200 [Formula: see text] 200 [Formula: see text] 20 毫米[Formula: see text]的标签读取体积。此外，它具有低增益特性，这对于大多数近场应用是必要的，以防止误读其他标签。此外，该设计中的电流分布在整个结构中是对称的，有效地解决了低成本线性极化标签天线中常见的方向灵敏度问题。测量结果表明，该阅读器天线可以读取使用低成本无源/免电池 RFID 标签标记的药丸、标记昂贵的珠宝、干预解决方案以及以各种方向定位的血袋。因此，基于提出的阅读器天线的系统是近场 RFID、医疗保健和物联网应用的有力竞争者。

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