Independent Dual-Circularly Polarized Passive RFID Tag for Incident Angle Measurement

IF 3.7 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-12-31 DOI:10.1109/LAWP.2024.3524266

Sheng Gao;Mei Yang;Hongxin Zhao;Xiaoxing Yin

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引用次数: 0

Abstract

This study presents an independent dual-circularly polarized RFID tag and introduces a method for measuring the incident angle between the RFID tag and the reader. The tag, constructed with hybrid phase shift elements, possesses the capability to convert and independently control dual circular polarization. The reflection from left-handed circularly polarized (LCP) waves exhibits a higher monostatic radar cross section (RCS) than those from right-handed circularly polarized (RCP) waves within a certain angle range. The monostatic RCS difference between LCP and RCP depends on the tag incident angle, varying in magnitude as the angle changes. Therefore, the tag's incident angle can be obtained by comparing the measured difference with theoretically predicted values. A nine-element RFID tag was designed and fabricated, and its performance was validated through experiments. Experimental results confirmed significant distinguishability between the scattered LCP and RCP monostatic RCS patterns, aligning with simulated predictions. The proposed tag incident angle measurement method requires only a single RFID tag and a single reader. Additionally, the method is compatible with conventional positioning methods and can serve as an alternative method to enhance stability.

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用于入射角测量的独立双圆偏振无源RFID标签

本研究提出了一种独立的双圆极化RFID标签，并介绍了一种测量RFID标签与阅读器之间入射角的方法。该标签由混合相移元件构成，具有转换和独立控制双圆偏振的能力。在一定角度范围内，左手圆偏振波的反射比右手圆偏振波的反射具有更高的单站雷达截面（RCS）。LCP和RCP之间的单稳态RCS差异取决于标签入射角，随角度的变化而变化。因此，通过将测量值与理论预测值进行比较，可以得到标签的入射角。设计并制作了一个九元RFID标签，并通过实验验证了其性能。实验结果证实了分散LCP和RCP单稳态RCS模式之间的显著区别，与模拟预测一致。所提出的标签入射角测量方法只需要一个RFID标签和一个阅读器。此外，该方法与传统的定位方法兼容，可以作为增强稳定性的替代方法。

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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来源期刊

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.