Electro-textile UHF RFID patch antennas for positioning and localization applications

2014 IEEE RFID Technology and Applications Conference (RFID-TA) Pub Date : 2014-10-23 DOI:10.1109/RFID-TA.2014.6934237

K. Koski, E. Lohan, L. Sydänheimo, L. Ukkonen, Y. Rahmat-Samii

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引用次数: 18

Abstract

Passive ultra-high frequency (UHF) radio frequency identification (RFID) provides an attractive technology for indoor positioning and localization. It offers contactless communication, non line-of-sight readability, compactness, and low cost. Localization techniques and algorithms have been actively researched recently from accuracy point of view. However, less attention has been paid to the antenna and its effects on the achieved localization accuracy. Particularly, wearable antennas in human localization applications are key components affecting the achieved accuracy and reliability. In this paper, we elaborate on the material choice for wearable UHF RFID patch antennas. Two highly attractive and flexible conductive electro-textiles are discussed and compared: anisotropic embroidered textile structure and uniform commercially available copper fabric. A patch tag antenna is designed for each electro-textile to operate at 866 MHz. The on-body readability and Received Signal Strength (RSS) in office environment for the antennas are recorded and analyzed. Based on the results we decide on the antenna feasibility in localization applications.

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用于定位和定位应用的电子纺织超高频RFID贴片天线

无源超高频(UHF)射频识别(RFID)为室内定位和定位提供了一种有吸引力的技术。它提供非接触式通信，非视线可读性，紧凑性和低成本。近年来，人们从精度的角度对定位技术和算法进行了积极的研究。然而，对天线及其对定位精度的影响研究较少。在人体定位应用中，可穿戴天线是影响定位精度和可靠性的关键部件。本文详细介绍了可穿戴超高频RFID贴片天线的材料选择。讨论和比较了两种极具吸引力和柔性的导电电织物:各向异性绣花织物结构和均匀的市售铜织物。贴片标签天线是为每件电子纺织品设计的，工作频率为866兆赫。记录并分析了天线在办公环境下的体上可读性和接收信号强度。在此基础上确定了天线在定位应用中的可行性。

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

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