Bendable Folded-Patch Antenna With Resonant Ring Manufactured Based on Foam Support and PET Substrate for On-Metal UHF RFID

IF 2.3 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Lianfu Zhao;Yongtao Ma;Weijia Meng;Kaixiang Peng;Kaihua Liu
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引用次数: 0

Abstract

A new flexible substrate UHF RFID tag on metal with a resonant ring and surface-etched slots that can be read at a long distance is proposed in this paper. The tag has a compact footprint of 50 mm $\times50$ mm $\times1.1$ mm ( $0.152\,\,\lambda \times 0.152\,\,\lambda \,\,\times 0.003\,\,\lambda $ at 915 MHz). It consists of two rectangular patches with a closed resonant ring and 4 surface etching slots, a narrow inductive stub, and a square ground. With the above structure which can make the tag adjusts both the resistance and reactance of the chip. The antenna has 7 adjustable parameters and can also be resonated at different frequencies. In the simulation, the proposed tag reaches a high power transmission coefficient (99.99%), which is an almost perfect conjugate matching, and the tag can reach a long reading distance of about 11 m on the metal containers. Finally, the tag is fabricated on the flexible polyethylene terephthalate substrates and tested. With an EIRP (effective isotropic radiated power) of 4 W, the tag can be read at a long range of 7.29 meters on metal planes and 3.71 meters on curved metal surfaces.
基于泡沫支撑和PET基板的金属超高频RFID可弯曲折叠贴片谐振环天线
本文提出了一种新型的金属柔性基板超高频射频标签,该标签具有谐振环和表面蚀刻槽,可以远距离读取。该标签的紧凑尺寸为50 mm $\times50$ mm $\times1.1$ mm ($0.152\,\,\lambda \乘以0.152\,\,\lambda \,\,\乘以0.003\,\,\lambda $在915 MHz)。它由两个矩形贴片,一个封闭的谐振环和4个表面蚀刻槽,一个窄的感应短段和一个方形地组成。利用上述结构,可以使标签同时调节芯片的电阻和电抗。天线有7个可调参数,也可以在不同的频率共振。在仿真中,所提出的标签达到了很高的功率传输系数(99.99%),几乎是完美的共轭匹配,标签在金属容器上的读取距离可以达到11 m左右。最后,在柔性聚对苯二甲酸乙二醇酯基板上制作标签并进行测试。EIRP(有效各向同性辐射功率)为4w,在金属平面上的读取距离为7.29米,在弯曲的金属表面上的读取距离为3.71米。
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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CiteScore
5.70
自引率
0.00%
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