Design and performance analysis of a purely textile spiral antenna for on-body NFC applications

Del-Rio-Ruiz, Ruben; Lopez-Garde, Juan-Manuel; Legarda, Jon; Rogier, Hendrik

doi:10.1109/imws-amp.2017.8247427

Cited by 10 publications

(7 citation statements)

References 4 publications

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“…Although there are different studies about electromagnetic shielding textiles in literature, there is an urgent need to develop electromagnetic interference (EMI) shielding materials [6]. Moreover, different groups have worked on textile antennas [7][8][9][10] and leather antennas [11] for wearables, in which the conductivity is a prerequisite. Therefore, in order to make resistive traditional leather conductive, different groups have worked with different methods [2][3][4][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Influence of Humidity on the Electric Resistivity of Leather: Mathematical Modelling

Mey

Kazani

Hylli

et al. 2023

TEKS

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A mathematical model is presented to simulate the electric resistivity of leather samples as a function of humidity. It will be shown that absolute and not relative humidity is the crucial parameter. The model assumes that the leather includes channels that can absorb water from the surrounding environment. This effect primarily determines the electric conductivity of the leather samples. The theoretical results from the model are quite closely in line with experimental measurements.

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Section: Introductionmentioning

confidence: 99%

Influence of Humidity on the Electric Resistivity of Leather: Mathematical Modelling

Mey

Kazani

Hylli

et al. 2023

TEKS

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“…Some research into the use of coupled coils in textiles has been presented recently. Attempts have been made to combine off-the-shelf near-field communication (NFC) technology with embroidered antennas to form contactless connections [ 25 , 26 , 27 , 28 ]. The idea of creating full body-wide BANs using multiple antennas with in-fabric interconnects has been presented before [ 29 , 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Adaptive Impedance Matching Network for Contactless Power and Data Transfer in E-Textiles

Lindeman

Steijlen

Bastemeijer

et al. 2023

Sensors

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One of the major challenges associated with e-textiles is the connection between flexible fabric-integrated wires and rigid electronics. This work aims to increase the user experience and mechanical reliability of these connections by foregoing conventional galvanic connections in favor of inductively coupled coils. The new design allows for some movement between the electronics and the wires, and it relieves the mechanical strain. Two pairs of coupled coils continuously transmit power and bidirectional data across two air gaps of a few millimeters. A detailed analysis of this double inductive link and associated compensation network is presented, and the sensitivity of the network to changing conditions is explored. A proof of principle is built that demonstrates the system’s ability to self-tune based on the current–voltage phase relation. A demonstration combining 8.5 kbit/s of data transfer with a power output of 62 mW DC is presented, and the hardware is shown to support data rates of up to 240 kbit/s. This is a significant improvement of the performance of previously presented designs.

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“…The potential use of wearable NFC devices for pervasive health monitoring was discussed by Prabhakar et al [27] and the use of RFID tags in retail shops clothing merchandise was presented by Serra et al [28]. Further on, the design and performance analysis of a purely textile antenna for NFC applications was presented in 2017 [29]; various embroidered wearable antennas for NFC and RFID were proposed by Jiang et al on 2019 [30]; and finally, very recently, a body temperature and sweat sensing system based on smart textile NFC components was proposed [31]. In parallel, industry-driven research is developing alternative technologies for deploying NFC antennas and chips in textiles and clothing [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

A Wearable NFC Antenna Sewn on Leather Substrate for Immersive IoT Applications

Mitilineos¹,

Kallivretaki²,

Vassiliadis³

et al. 2022

TLR

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The Internet of Things (IoT) is considered a promising realm of innovation and revenue generation for the forthcoming years, revolutionizing the way we interact with objects, other people and the world. With an unprecedented but realistic target of trillions of interconnected devices, the IoT calls for technological innovations that lie in the heart of rapid, low-energy and user-friendly communication between people and things. In this respect, the Near Field Communication (NFC) protocol offers advanced efficiency and applicability with low energy consumption, ease of use, flexibility, and increased payload. NFC tags may be embedded in everyday objects, including clothing and apparel, offering an immersive user experience. Wearable NFC antennas and NFC tags embedded in clothing have been presented in the past; nonetheless, in this paper we present, to the best of our knowledge, the first reported development of a NFC antenna on leather substrate. The proposed antenna is sewn using stainless steel thread and operates at the 13.56 MHz frequency range. It may be used alongside with NFC tags in leather apparel like clothing, shoes, accessories, etc., thus extending the possible use cases and applications of the NFC technology and offering an all the more immersive experience for the end user.

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Design and performance analysis of a purely textile spiral antenna for on-body NFC applications

Cited by 10 publications

References 4 publications

Influence of Humidity on the Electric Resistivity of Leather: Mathematical Modelling

Influence of Humidity on the Electric Resistivity of Leather: Mathematical Modelling

Adaptive Impedance Matching Network for Contactless Power and Data Transfer in E-Textiles

A Wearable NFC Antenna Sewn on Leather Substrate for Immersive IoT Applications

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