Wearable E-textile split ring passive UHF RFID tag: Body-worn performance evaluation

Ma, Shubin; Ukkonen, Leena; Sydänheimo, Lauri; Björninen, Toni

doi:10.1109/apmc.2017.8251404

Cited by 6 publications

(4 citation statements)

References 7 publications

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“…Instead of using conductive fibers, other conductive flat materials can be employed in tag structures [ 45 , 46 , 47 , 48 ]. Such tags can be attached to the textile product using glue and ironing.…”

Section: Introductionmentioning

confidence: 99%

“…Such tags can be attached to the textile product using glue and ironing. In paper [ 48 ], a tag with a split-ring resonator antenna is proposed. It consists of two layers of conductive fabric.…”

Section: Introductionmentioning

confidence: 99%

“…One way is to use low-temperature soldering [ 26 ]. However, the most common way is applying bonding with conductive epoxy [ 27 , 31 , 35 , 47 , 48 ]. Also, examples of knitted [ 37 ] and embroidered interconnection can be found [ 29 , 54 ].…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Factors Affecting the Performance of Textronic UHF RFID Transponders

Ziobro,

Jankowski-Mihułowicz,

Węglarski

et al. 2023

Sensors

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The aim of this paper is to demonstrate progress in textronic UHF RFID transponder (RFIDtex tag) technology. The fundamental idea behind the RFIDtex tag design involves galvanic separation between circuits of the sewn antenna and the chip, which are electromagnetically coupled through a system of inductive loops. To advance the development of this concept, it is crucial to detect factors affecting the performance of the transponders. To achieve this goal, a mathematical model of the textronic UHF RFID transponder was developed. It involves relationships that describe the impedance of each element, the mutual inductance of the loops, and the chip voltage, and it enables the exploration of the influence of these variables on general parameters such as impedance matching and read range. Various analytical and numerical approaches were considered to obtain the value of the mutual inductance of the loops. The dimensions and geometry of the antenna, as well as the matching circuit in the microelectronic module, were taken into account. Based on the mathematical model, it was determined that mutual inductance strongly affects the chip voltage for frequencies higher than 800 MHz. The calculations from the mathematical model were compared with numerical simulations. Experimental studies were also conducted to investigate how the transponder performance is affected by either the distance between the centers of the loops or the conductivity of the threads used to embroider the antenna. The measurement results allowed us to conclude that even small imperfections in the manufacturing of the transponder, which slightly increase the vertical or horizontal distance between the centers of the loops, cause a dramatic decrease in the mutual inductance and coupling coefficient, significantly impacting the transponder’s performance.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation of Factors Affecting the Performance of Textronic UHF RFID Transponders

Ziobro,

Jankowski-Mihułowicz,

Węglarski

et al. 2023

Sensors

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“…Textile MTMs have been directly reported in literature for antenna applications 11 . Textiles have also been used in composite polymer fiber fabrics 12 , and copper split-ring resonators have been used as narrow-band solution to reduce the electromagnetic radiation 13 and for passive UHF RFID tags 14 . In addition, textile substrates have been used in wearable antenna applied to wireless body area network [15][16][17][18][19] .…”

Section: Introductionmentioning

confidence: 99%

Effect of smart textile metamaterials on electromagnetic performance for wireless body area network systems

Moradi

Fernández‐García

Gil

2018

Textile Research Journal

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In this work, the utilization of different textile materials for manufacturing of metamaterial with the aim of controlling the signal propagation on smart textile applications is investigated. The performance of composite structures of embroidered yarn conductor transmission lines loaded with split-ring resonator geometries in felt and cotton substrates are reported. The proposed structure allows propagating or filtering the transmitted signal in the microwave frequency range. The experimental results exhibit a rejection band between 1.3 and 2.6 GHz for felt substrate and between 1.6 and 2.6 GHz for cotton substrate with stop-band levels lower than-20 dB. The presented e-textile structures are designed, electromagnetically simulated and measured. The measured results are in good agreement with 3D electromagnetic simulations. The effect of bending of the e-textiles for realistic scenario is also studied. The experimental results show that by changing the radius of bending from 10 mm to 65 mm, the resonance frequency is shifted up 290 MHz and 144 MHz for cotton and felt substrates, respectively.

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An RFID-Based Wireless Vibration and Physical-Shock Sensing System Using Edge Processing

et al. 2022

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Wearable E-textile split ring passive UHF RFID tag: Body-worn performance evaluation

Cited by 6 publications

References 7 publications

Investigation of Factors Affecting the Performance of Textronic UHF RFID Transponders

Investigation of Factors Affecting the Performance of Textronic UHF RFID Transponders

Effect of smart textile metamaterials on electromagnetic performance for wireless body area network systems

An RFID-Based Wireless Vibration and Physical-Shock Sensing System Using Edge Processing

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