Durability of Wearable Antennas Based on Nonwoven Conductive Fabrics: Experimental Study on Resistance to Washing and Ironing

Corchia, Laura; Monti, Giuseppina; Tarricone, Luciano

doi:10.1155/2018/2340293

Cited by 27 publications

(18 citation statements)

References 33 publications

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“…A Thin Film Transistor (TFT) made of Tellurium was developed in 1968 on a piece of paper. In the same year, T.P Brody presented Mylar, Polyethylene and anodized Aluminum wrapping foils substrates [ 38 ]. In the mid-1980s, researchers achieved the highest ever curvature of any flexible electronic circuits.…”

Section: Advancement Of Flexible Electronicsmentioning

confidence: 99%

“…This is because these materials are usually rigid, costly, and lack flexibility and mechanical resilience. A lot of research has already explored numerous materials which exhibit suitable properties as a substrate for conductive materials for antennas are conductive polymers [ 28 , 29 , 30 , 31 , 32 , 33 , 34 ], conductive threads [ 35 , 36 , 37 ] and conductive textile [ 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 ]. For dielectric materials, Polyimide (PI) [ 7 , 11 , 26 , 29 , 53 , 54 , 55 , 56 , 57 , 58 , 59 ], Polyethylene Terephthalate (PET) [ 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 ], Polydimethylsiloxane (PDMS) [ 68 , 69 , 70 , 71 , 72 , 73 , 74 ,…”

Section: Introductionmentioning

confidence: 99%

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Bending Analysis of Polymer-Based Flexible Antennas for Wearable, General IoT Applications: A Review

et al. 2021

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Flexible substrates have become essential in order to provide increased flexibility in wearable sensors, including polymers, plastic, paper, textiles and fabrics. This study is to comprehensively summarize the bending capabilities of flexible polymer substrate for general Internet of Things (IoTs) applications. The basic premise is to investigate the flexibility and bending ability of polymer materials as well as their tendency to withstand deformation. We start by providing a chronological order of flexible materials which have been used during the last few decades. In the future, the IoT is expected to support a diverse set of technologies to enable new applications through wireless connectivity. For wearable IoTs, flexibility and bending capabilities of materials are required. This paper provides an overview of some abundantly used polymer substrates and compares their physical, electrical and mechanical properties. It also studies the bending effects on the radiation performance of antenna designs that use polymer substrates. Moreover, we explore a selection of flexible materials for flexible antennas in IoT applications, namely Polyimides (PI), Polyethylene Terephthalate (PET), Polydimethylsiloxane (PDMS), Polytetrafluoroethylene (PTFE), Rogers RT/Duroid and Liquid Crystal Polymer (LCP). The study includes a complete analysis of bending and folding effects on the radiation characteristics such as S-parameters, resonant frequency deviation and the impedance mismatch with feedline of the flexible polymer substrate microstrip antennas. These flexible polymer substrates are useful for future wearable devices and general IoT applications.

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Section: Advancement Of Flexible Electronicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bending Analysis of Polymer-Based Flexible Antennas for Wearable, General IoT Applications: A Review

et al. 2021

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“…As a result, the development of wearables that could allow to effectively engage the user into the IoT sensory environment without compromising their comfort has become a major interest of applied research [8][9][10]. Nevertheless, despite its potential, the use of wearable electronics has been hindered by some practical limitations, such as its robustness to basic but severe operations (e.g., washing, ironing) [11,12] and the need to tin solder the necessary integrated circuitry (IC). Even the European Commission has recently stated that future wearables will have to be "shapeable, stretchable and washable/cleanable on-demand", emphasizing that a wearable should look like natural clothing in terms of comfortability, breathability and washability [13].…”

Section: Introductionmentioning

confidence: 99%

Fully-Textile, Wearable Chipless Tags for Identification and Tracking Applications

Corchia

Monti

Benedetto

et al. 2020

Sensors

Self Cite

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In this work, two fully-textile wearable devices, to be used as chipless identification tags in identification and tracking applications are presented. For the fabrication of the fully-textile tags, a layer of fleece was used as a substrate, while an adhesive non-woven conductive fabric was employed for the conductive parts. To allow radio-frequency identification of these chipless tags, two alternative techniques were used. One relies on associating a binary code with the resonance frequency of resonant devices: the presence/absence of the resonance peaks in the transmission scattering parameter, | S 21 | , of a set of resonators is used to encode a string of bits. The second technique for accomplishing radio-frequency identification of the chipless tags resorts to a frequency-shift coding technique, which is implemented by modifying the configuration of a hairpin resonator. The obtained numerical and experimental results confirm the suitability of the proposed strategies for obtaining entirely-textile, wearable chipless tags for identification and tracking purposes, which can be particularly useful, especially in the industrial sector. In this field, in fact, the proposed solutions would guarantee a seamless integration with clothes and would facilitate the user’s interaction with the IoT infrastructure. In this regard, one of the envisaged application scenarios related to the tracking of hides in the leather industry is also presented.

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“…The growth of wearable technology and the success of wearable devices has been hampered by limits such as the lack of materials and manufacturing techniques for seamless integration with electronic parts [9], the robustness in washing, drying and moulding [10], [11]. To address these challenges flexible polymerbased chipless RFID tag can be a good candidate.…”

Section: Introductionmentioning

confidence: 99%

Transient Response & Electromagnetic Behaviour of Flexible Bow-Tie Shaped Chip-less RFID Tag for General IoT Applications

Khan¹,

Raad²,

Foroughi³

2020

Adv. sci. technol. eng. syst. j.

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This paper is an extension of Novel Flexible Chip-less Bow-Tie RFID tag in which we presented the design, testing and fabrication of the tag and compared the results with Octagonal Chipless RFID tag. The chipless RFID tag was designed by using simulation software CST microwave studio and fabricated by using laser etching technique on a flexible polymer substrate Polyethylene Terephthalate (PET). The tag operates at frequency ranging from 8 to 18 GHz uses the Frequency Selective Surface (FSS) approach. A series of experiments are performed to measure the Radar Cross Section (RCS) in an anechoic chamber. The tag design is composed of six concentric Bow-Tie shaped loop resonators with one unitary element. In this paper, we demonstrated the Singularity Expansion Method (SEM) based circuit modelling and the transient behaviour of the RFID tag is performed. The coupling coefficients and the induced currents over the surface of Bow tie shaped rings are evaluated. The maximum read range is evaluated and the Bow-Tie RFID tag is proved to be more accurate and efficient with the variation of distance up to 1.8m at 0dBm which is extendable to 2.14m for higher input power. This range is maximum to our knowledge for such a high-frequency range of 8-18GHz. The 4-bits Bow-Tie Chipless RFID tag design is compact and can be deployed commercially for general IoT applications.

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Durability of Wearable Antennas Based on Nonwoven Conductive Fabrics: Experimental Study on Resistance to Washing and Ironing

Cited by 27 publications

References 33 publications

Bending Analysis of Polymer-Based Flexible Antennas for Wearable, General IoT Applications: A Review

Bending Analysis of Polymer-Based Flexible Antennas for Wearable, General IoT Applications: A Review

Fully-Textile, Wearable Chipless Tags for Identification and Tracking Applications

Transient Response & Electromagnetic Behaviour of Flexible Bow-Tie Shaped Chip-less RFID Tag for General IoT Applications

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