Study and design of wristband RFID antenna for healthcare applications

Marouf, Fatima Zahra; Kerarti, Djalal Ziani

doi:10.1002/mop.30973

Cited by 7 publications

(3 citation statements)

References 13 publications

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“…In the literature, various Sub-GHz wrist-worn antennas have been reported, with the majority of them accounting for the effects of the human body on antenna performance. However, a few papers neglect the presence of the human body, and the antenna parameters, such as impedance bandwidth, antenna gain, and efficiency are reported for free-space conditions [100]- [104]. It is important to highlight that this study only includes antennas that consider the effects of the human body on antenna performance.…”

Section: State-of-the-art Sub-ghz Wrist-worn Antennasmentioning

confidence: 99%

Sub-GHz Wrist-Worn Antennas for Wireless Sensing Applications: A Review

Kumar,

Moloudian,

Simorangkir

et al. 2024

IEEE Open J. Antennas Propag.

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With recent advances in wearable wrist-worn wireless sensing applications, the demand for smartwatches and wristbands is rapidly increasing due to their widespread adoption in applications such as smart health monitoring, security, and fitness tracking. Currently, these devices primarily operate in the 2.45 GHz band, leveraging the availability of Bluetooth and Wi-Fi wireless technologies. However, the use of 433 MHz, 868 MHz, 915 MHz, 923 MHz) for wearable systems has also gained interest due to the emergence of wireless technologies like long-range wide area network (LoRaWAN), narrowband-IoT (NB-IoT) and Sigfox, which offer the potential for long-range wireless communications and sensing applications. In recent times, there has been a notable surge in the commercial production of a variety of Sub-GHz wrist-worn wireless sensing devices for health monitoring and tracking applications. Nevertheless, communications at Sub-GHz frequencies present significant challenges in antenna design, primarily due to the practical size constraints of wrist-worn devices and the necessity for using electrically small antennas. This paper meticulously reviews wrist-worn Sub-GHz antennas reported in the literature, analyzing key antenna parameters such as antenna topology, size, impedance bandwidth, peak realized gain, radiation efficiency, and specific absorption rate (SAR). Additionally, it underlines antenna design challenges, limitations, current trends, and presents potential future perspectives. To the best of the author's knowledge, there is currently no existing literature comprehensively reviewing Sub-GHz wristworn antennas. Therefore, this paper represents the inaugural effort to provide a comprehensive review in this specific domain.

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Section: State-of-the-art Sub-ghz Wrist-worn Antennasmentioning

confidence: 99%

Sub-GHz Wrist-Worn Antennas for Wireless Sensing Applications: A Review

Kumar,

Moloudian,

Simorangkir

et al. 2024

IEEE Open J. Antennas Propag.

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“…Flexible and conformal electronics are the basis of various emerging devices and technologies, including wearable electronics [1][2][3][4][5], electronic skins [6][7][8][9][10], bionic devices [11][12][13], soft robots [14][15][16][17], and the Internet of Things (IoT) [18][19][20]. For example, conformal antennas are receiving considerable interest based on extensive healthcare [21][22][23][24][25][26][27], IoT [28][29][30], and aerospace applications [31][32][33]. Various printing techniques have been utilized for the fabrication of flexible antennas, including screen-printing [34,35], inkjet printing [36][37][38], and liquid metalfilled microfluidics [39,40].…”

Section: Introductionmentioning

confidence: 99%

Conformal 3D printing of non-planar antennas on wrinkled and folded kapton films using point cloud data

Kucukdeger

Tong

Singh

et al. 2021

Flex. Print. Electron.

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We report a reverse engineering-driven method for conformal microextrusion three-dimensional (3D) printing of functional materials on complex 3D structures and thin films of near-arbitrary topography. A non-planar tool path programming algorithm for conformal microextrusion 3D printing based on point cloud data representations of object geometry is presented. We show that the optimal nozzle-substrate standoff distance for quality 3D printing depends on the substrate's local geometric features (i.e. slope and curvature) and the tool trajectory. The impact and utility of the novel conformal microextrusion 3D printing process were demonstrated by fabrication of 3D spiral and Hilbert-curve loop antennas on various non-planar substrates, including wrinkled and folded Kapton films and origami. 3D-printed conformal antennas exhibited resonant frequencies ranging from 1.5 to 2.7 GHz with S 11 less than 10 db. This work provides a new method for conformal 3D printing on one-of-a-kind objects and non-planar films.

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“…Due to the large demand for novel flexible systems such as smart clothes [1], RFIDs, healthcare systems [2][3][4], and many other applications [5,6], flexible electronics are introduced as a very interesting technology. Flexible antennas are one of the most interesting elements in the whole flexible system.…”

Section: Introductionmentioning

confidence: 99%

Expanded graphite monopole antenna printed on flexible paper substrate for 2.4 GHz wireless systems

Aziz

Ibrahim

Rouby

et al. 2021

Int. J. Microw. Wireless Technol.

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In this work, a printed coplanar waveguide (CPW) fed single band antenna based on expanded graphite material is introduced. The proposed antenna is based on a CPW-monopole antenna with a U-shape conductor strip connected with the ground. Expanded graphite, a grade of graphene, is used as a conductor to design the uniplanar antenna over a flexible paper substrate. The antenna is designed for 2.4 GHz applications. The antenna design procedures are discussed. The material preparation and analysis are illustrated. Finally, the antenna fabrication and measurements of the reflection coefficient are discussed. The measured antenna reflection coefficient agrees with the simulated one, ensuring the antenna validity for serving the required applications. The radiation antenna parameters are discussed and simulated results from two-simulation software are included for comparison. The antenna has a simulated gain of 4 dBi and simulated efficiency of around 90% at 2.4 GHz.

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Study and design of wristband RFID antenna for healthcare applications

Cited by 7 publications

References 13 publications

Sub-GHz Wrist-Worn Antennas for Wireless Sensing Applications: A Review

Sub-GHz Wrist-Worn Antennas for Wireless Sensing Applications: A Review

Conformal 3D printing of non-planar antennas on wrinkled and folded kapton films using point cloud data

Expanded graphite monopole antenna printed on flexible paper substrate for 2.4 GHz wireless systems

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