利用圆极化天线提高超高频RFID定位精度

2014 IEEE RFID Technology and Applications Conference (RFID-TA) Pub Date : 2014-10-23 DOI:10.1109/RFID-TA.2014.6934223

Markus Cremer, A. Pervez, U. Dettmar, Thomas Knie, R. Kronberger

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引用次数: 12

摘要

提出了一种基于室内到达角的无源超高频RFID标签定位方法的两种新型天线设计。首先，圆极化贴片天线，可作为阅读器的发射天线或作为标签天线。第二，为阅读器设计圆极化三元贴片天线阵列。我们在一个3米× 3米的测试网格中测量了25个等间距的测量点，放置在一个标准的办公室里，结果表明，与配备线极化天线的系统相比，新天线的定位精度提高了53%。新的圆偏振系统能够在我们的设置中定位一个标签，测量平均误差为9厘米，测量平均标准偏差为7厘米。

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Improved UHF RFID localization accuracy using circularly polarized antennas

We present the design of two new antennas for an indoor angle-of-arrival based passive UHF RFID tag localization method. First, a circularly polarized patch antenna that can be used as the reader's transmit antenna or as the tag antenna. Second, a circularly polarized three-element patch antenna array for the reader. We use measurements in a 3 m × 3 m test grid with 25 equally spaced measurement points, placed into a standard office room, to show that the new antennas improve localization accuracy by 53% compared to a system equipped with linearly polarized antennas. The new circularly polarized system is able to localize a tag in our setup with a measured mean error of 9 cm and a measured mean standard deviation of 7 cm.

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2014 IEEE RFID Technology and Applications Conference (RFID-TA)

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