Effect of Bending on a Textile UHF-RFID Tag Antenna

Bakkali, Mohamed El; Martinez-Estrada, Marc; Fernández‐García, Raúl; Gil, Ignacio; Mrabet, Otman El

doi:10.23919/eucap48036.2020.9135331

Cited by 15 publications

(11 citation statements)

References 1 publication

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“…The majority of prior studies [73], on RFID tags have focused on their performance in a flat configuration. However, the effects of bending on antenna performance should be examined if a flexible substrate is employed, for example such as a wearable on-body system.…”

Section: Bending Effects In Textile Antennasmentioning

confidence: 99%

Wearable Textile Patch Antenna: Challenges and Future Directions

et al. 2022

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Wearable antennas have grown in popularity in recent years as a result of their appealing features and prospects to actualize lightweight, compact, low-cost and adaptable wireless communications and surroundings. These antennas have to be conformal and made of lightweight materials in a low-profile arrangement when attached to various parts of the human body. Near-body operation of these antennas should be possible without degradation. When these characteristics are taken into account, the layout of wearable antennas become challenging, especially when textile substrates are investigated, high conductivity materials are used during manufacturing procedures and body binding scenarios have an impact on the design's performance. Several of these issues arise in the context of body-worn deployment, despite modest changes in magnitude between implementations. This paper examines the multiple issues and obstacles encountered in the construction of wearable antennas as well as the range of materials used, and the Specific Absorption Rate (SAR) effects employed as well as the bending scheme. An overview of the innovative features and their separate approaches to addressing the difficulties lately raised by work in this field conducted by the scientific community is provided as an appendix.

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Section: Bending Effects In Textile Antennasmentioning

confidence: 99%

Wearable Textile Patch Antenna: Challenges and Future Directions

et al. 2022

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“…Textile antennas should be fexible and capable of working in bending situations [29]. To meet this requirement, the proposed MIMO antenna is tested in a variety of bending scenarios.…”

Section: Bending Analysismentioning

confidence: 99%

Design and Analysis of UWB MIMO Antenna for Smart Fabric Communications

Govindan

Palaniswamy

Kanagasabai

et al. 2022

International Journal of Antennas and Propagation

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This paper presents a flexible multiple-input, multiple-output (MIMO) antenna with ultrawideband (UWB) performance for smart clothing applications. The MIMO antenna is comprised of four octagonal-shaped radiators with several slots loaded into them, and it offers a frequency range of 2.9–12 GHz. The unit cell has a size of 0.26λ0 × 0.164λ0 × 0.014λ0 and the MIMO antenna has a size of 0.48λ0 × 0.48λ0 × 0.014λ0, where λ0 corresponds to the lowest operating frequency. The radiation and diversity performances of the antenna are evaluated, and the obtained metrics are envelope correlation coefficient (ECC) <0.045, diversity gain (DG) >9.9 dB, total active reflection coefficient (TARC) <−14 dB, and channel capacity loss (CCL) <0.13 bits/s/Hz. The bending analysis of the MIMO antenna is performed. The specific absorption rate (SAR) of the MIMO antenna is also investigated, and the obtained values are 0.229 W/Kg (4 GHz), 0.253 W/Kg (7 GHz), and 0.463 W/Kg (10 GHz).

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“…The primary application of textile UHF RFID tags is in textile-concealed worn systems, which implies frequent bending and stretching [13]. Because of that, the read ranges of the RFID tag with different bending angles have been studied by using various cylindrical shapes with radius ranging from 35 mm to 50 mm.…”

Section: Bending Effectmentioning

confidence: 99%

An Embroidered Passive Textile Rfid Tag Based on a T-Matched Antenna

Bakkali¹,

Mrabet²,

Kanjaa³

et al. 2021

PIER Letters

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This paper addresses the design and fabrication of an embroidered textile RFID tag antenna. The main feature of this design is that we have embroidered an RFID chip on the textile support which avoids the use of metallic wires or soldering. The modeled equivalent circuit of the tag is presented to get physical insight into RFID tag antenna design. The detailed results given in this paper include the effect of the bending and the human body proximity on the antenna performance. It is shown that the bending does not introduce a conspicuous effect on the tags read range while the dissipative characteristics of the human body cause a gain and read range reduction. The proposed design may find applications in wearable devices dedicated to health monitoring applications.

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Effect of Bending on a Textile UHF-RFID Tag Antenna

Cited by 15 publications

References 1 publication

Wearable Textile Patch Antenna: Challenges and Future Directions

Wearable Textile Patch Antenna: Challenges and Future Directions

Design and Analysis of UWB MIMO Antenna for Smart Fabric Communications

An Embroidered Passive Textile Rfid Tag Based on a T-Matched Antenna

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