Design of UHF RFID body-worn textile tag for wireless applications

Lagha, Faten; Beldi, Sabri; Latrach, Lassaad

doi:10.1109/dtss.2019.8914751

Cited by 5 publications

(8 citation statements)

References 9 publications

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“…Fabrics commonly used in antenna substrate are considered according to previous work. 9,25,30–33 From this work, the range of dielectric constant, dielectric loss tangent, and thickness of the fabric is 1.1∼2, 0.01∼0.1, and 0.1∼2.6 mm, respectively. The changes of the dielectric constant and the dielectric loss tangent are ascribed to the different porosity and materials of the fabric.…”

Section: Modelling and Methodsmentioning

confidence: 73%

“…Second, to fabricate wearable fabric-based CP antenna, it is necessary to clarify the influence range of fabric properties on the antenna performance, which provide the basis for the structural optimization of the fabric antenna. As the dielectric properties and thickness of the fabric will affect the antenna size and signal transmission performance, 25,26 the influence of dielectric properties and thickness of fabric on antenna performance is mainly analyzed. The effect of fabric properties on antenna performance is analyzed by the single factor analysis method.…”

Section: Simulation Of Fabric Substrate Effectmentioning

confidence: 99%

“…Fabric is a flexible and air permeable textile material suitable for wearables, and its properties, such as moisture regain, elasticity, dielectric properties and thickness affect the structure and performance of the antenna. 21–26 Lagha et al. 25 simulated and analyzed the performance of two fabric-based antennas in polyester and denim fabrics.…”

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confidence: 99%

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Substrate effect and structure optimization of fabric-based circularly polarized dipole antenna for radio frequency energy harvesting

Zheng

Jiang

2023

Textile Research Journal

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Radio frequency energy harvesting on textiles is seen as a method of enabling sustainable battery-free operation for wearable devices, while few works have clarified the influence of fabric properties on antenna performance. To prepare successfully a fabric-based circularly polarized antenna for radio frequency energy harvesting, this paper will clarify the effect of key fabric characteristics (such as dielectric properties and fabric thickness) on antenna performance by a finite element simulation. The simulated results showed the antenna resonant frequency is inversely proportional to the half square of the fabric’s dielectric constant, and the antenna radiation efficiency and gain are inversely proportional to the square of its dielectric loss tangent and thickness. Then, for the typical fabric substrates, the structure parameters of the existing circularly polarized antenna are optimized to work in the expected working frequency band, and the dominating structure parameter of the antenna in performance was identified. The optimized antenna prototype has excellent performance. The antenna has a bandwidth of 350 MHz and a maximum transmission distance of 190 cm. The received signal strength indication per unit area is 2.35 mW/cm2 and the output voltage is 1.19 mV/cm2 at a distance of 100 cm. It is concluded that the flexible size-minimized wide bandwidth circularly polarized radio frequency energy harvesting antenna screen-printed on fabric was derived from a commercial circularly polarized antenna with fiber-reinforced epoxy plate (FR4) substrate, and the critical geometrical and material parameters of the fabric substrate for this antenna performance as well as the affecting mechanism were identified.

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Section: Modelling and Methodsmentioning

confidence: 73%

Section: Simulation Of Fabric Substrate Effectmentioning

confidence: 99%

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Substrate effect and structure optimization of fabric-based circularly polarized dipole antenna for radio frequency energy harvesting

Zheng

Jiang

2023

Textile Research Journal

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“…(i) When compared to previous studies, the proposed octagonal unit cell has a smaller area of 0.26λ 0 × 0.164λ 0 (ii) In contrast to [7,29] and [39][40][41][42][43], which are designed for narrowband frequencies, the proposed antenna is designed for wideband frequencies (iii) Te proposed antenna has a wide bandwidth of 8.9 GHz, whereas the impedance bandwidths offered by [7,29] and [39][40][41][42][43] are narrow (iv) In comparison to [7,29,[39][40][41][42][43][44][45][46][47], the proposed antenna ofers a higher gain of 4.84 dBi…”

Section: Diversity Performance Te Evaluation Of Diversitymentioning

confidence: 82%

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 possibility of using the RFIDtex allows designers to meet requirements of these applications and on the other hand forces the progress in manufacturing low-cost antennas integrated into fabrics by means used in the textile industry [ 8 ]. This objective can be achieved thanks to significant advancements that have been made in the textronics as well as in the radio frequency identification (RFID) technique over the last decade, especially in context of wireless body area networks (WBAN) [ 9 , 10 , 11 , 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Textronic UHF RFID Transponder

Jankowski-Mihułowicz

Węglarski

Chamera³

et al. 2021

Sensors

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In order to respond the growing interest towards radio frequency identification textile transponders, the authors propose a new approach to design radio frequency identification (RFID) devices by introducing the RFIDtex concept. The coupling system of inductive loops is implemented in the textronic structure with the RFID interface in order to split the transponder into two independently manufactured components. Then both modules can be easily integrated into the RFIDtex tag. The presented simulation and measurement results prove the concept of manufacturing a relatively small antenna in the form of a meandered dipole sewn in with a single thread, and further, that can be connected to the RFID chip through the coupling system without galvanic junctions. The achieved parameters clearly indicate that the tag can correctly communicate with the read/write device as well as the coupling between its both parts works properly, and the impedance matching is possible in this case. The possibility of confectioning products with electronic identification tags at the textile factory site and improved resistance to the impact of environmental conditions are the main advantage of the proposed approach to the RFID devices designing. The RFIDtex transponder idea proposed by the authors was restricted in the patent no PL 231291 B1.

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Design of UHF RFID body-worn textile tag for wireless applications

Cited by 5 publications

References 9 publications

Substrate effect and structure optimization of fabric-based circularly polarized dipole antenna for radio frequency energy harvesting

Substrate effect and structure optimization of fabric-based circularly polarized dipole antenna for radio frequency energy harvesting

Design and Analysis of UWB MIMO Antenna for Smart Fabric Communications

Textronic UHF RFID Transponder

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