Flexible Wearable Antenna for Body Centric Wireless Communication in S-Band

Afyf, Amal; Elouerghi, Achraf; Afyf, Maroua; Sennouni, Mohamed Adel; Bellarbi, Larbi

doi:10.1109/iceit48248.2020.9113217

Cited by 8 publications

(5 citation statements)

References 9 publications

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“…Compared to previously reported antennas [6][7][8][9][10][11][12][13][14][15][16][17], the proposed antenna has the largest fractional bandwidth among flexible antennas and maintains performance even when subjected to bending. The antenna also exhibits a high antenna gain, reaching 14.77 dBi at 11 GHz.…”

Section: Introductionmentioning

confidence: 84%

“…Furthermore, a low-cost flexible antenna utilizing a thin film substrate was developed for MWI and early stage tumor identification [11]. A small flexible UWB monopole antenna, utilizing MEMS technology and an inhomogeneous breast phantom, was proposed for breast cancer detection [12]. In this paper, the suggested approach involves a wearable circular UWB four-element MIMO antenna array for examining a breast phantom to detect cancerous tumor tissues [13,14].…”

Section: Introductionmentioning

confidence: 99%

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Defining Breast Tumor Location Using a Four-Element Wearable Circular UWB MIMO Antenna Array

et al. 2023

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The objective of this paper is to develop a wearable circular UWB MIMO antenna array, consisting of four elements, that is capable of detecting and locating tumor cells within a heterogeneous breast phantom. The antenna element operates within a bandwidth from 2.4 GHz to 10.6 GHz when FR4 is used as the substrate, and extends from 2.57 GHz to 12.6 GHz when a Dacron fabric is used instead. The antenna is fabricated and measured, yielding highly similar results to the simulated outcomes. In the suggested detection system, one antenna is used for transmission, while the other antennas receive the transmitted signal. The employed antenna demonstrates gains of 5.49 dBi, 9.87 dBi, 11.9 dBi, and 14.7 dBi at resonant frequencies of 2.84 GHz, 3.87 GHz, 5.83 GHz, and 8.24 GHz, respectively, when a Dacron fabric is used as the substrate. Moreover, the proposed antenna exhibits a flexible shape with minimal vertical and horizontal bending effects across the entire operating frequency band. The antenna has a compact size of 42.85 × 42.85 mm2 and is printed on an FR4 substrate with a dielectric constant of 4.5 and a thickness of 1.6 mm for testing purposes. The S-parameters of the suggested system can effectively identify and precisely locate small tumors. Furthermore, the SAR findings indicate that the amount of power absorbed by the breast phantom tissues complies with the IEEE standards, thus confirming the suitability of the recommended antenna for the early detection and localization of breast cancer.

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Section: Introductionmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Defining Breast Tumor Location Using a Four-Element Wearable Circular UWB MIMO Antenna Array

et al. 2023

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“…Before proceeding with antenna design, the requirements listed in the Table 2 must be respected. Based on our laboratory's research work on the antennas development [21]- [23] to benefit from previous experiences in this field, a new antenna structure has been developed for the early breast cancer detection. The antenna selected in this work is a circular, planar, flexible, miniature, ultra-wideband (UWB), and a microstrip feed, with a circle-shaped patch on the front face and a rectangular-shaped partial ground plane on the rear face.…”

Section: Microwave Radiometer Antenna Designmentioning

confidence: 99%

A novel miniaturized radiometer front-end for early breast cancer detection using ultra-wideband flexible antenna

Elouerghi,

Khomsi,

Bellarbi

et al. 2024

Bulletin EEI

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This article introduces a new design of the front-end part of a passive and miniature radiometer, which has been developed to detect breast cancer at an early stage, by measuring temperature in deep mammary tissues. The design and simulation of each element of the microwave radiometer are carried out using computer simulation technology microwave (CST MWS) software. The proposed measurement system consists of a miniaturized ultra-wideband (UWB) flexible antenna operating in the S-band (2-4 GHz), a breast phantom, a low noise amplifier (LNA), a bandpass filter, and a radio frequency (RF) power detector. These components were combined with active circuits to build the front-end system using the co-simulation modules provided by the CST MWS. The method is based on the concept that the virtually created tumor increases the temperature inside the breast phantom, and to detect the abnormality, we applied the proposed radiometer front-end on breast phantom to measure the gain variation. The results demonstrated that the design of the proposed miniaturized radiometer has promising performance in terms of stability and gain variation, indeed, the difference in maximum gain |ΔGmax| measured between abnormal and healthy phantom is about 0.92 dB at 2.75 GHz. This indicates its potential for detecting breast tumors.

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“…It reaches conductivity values of 2.5 × 10 4 ± 0.2 × 10 4 S/m, after optimizing an annealing time of 20/30 min at 250/350 °C [17]. For the antenna realization, Kapton polyimide-based substrate has been chosen due to their excellent thermal, chemical, mechanical, and electrical properties [18][19][20]. It can withstand the temperatures for the annealing process, but such films feature an inert and highly hydrophobic surface so a pre-treatment with plasma is necessary.…”

Section: A Antenna Designmentioning

confidence: 99%

Graphene Inkjet-Printed Ultrawideband Tapered Coplanar-Waveguide Antenna on Kapton Substrate

Ibanez‐Labiano

Nourinovin

Alomainy

2021

2021 15th European Conference on Antennas and Propagation (EuCAP)

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This paper presents an ultra-wideband graphene antenna with tapered coplanar-waveguide feed. The proposed antenna covers the 2.7-8.2 GHz bandwidth (2.6-10 GHz measured), with two main resonance frequencies at 3.1 and 5.5 gigahertz (3.1 and 5.8 measured). Simulations show a radiation pattern that looks quasi-omnidirectional with a maximum gain limited to 3.15 dBi and efficiency above 84.7%. In order to post-process the graphene ink and to provide flexibility, Kapton Polyimide is used as a substrate. The flexibility, as well as the lightweight and ease in the fabrication of accurate designs, turns this antenna into a suitable candidate for wearable and flexible wireless applications.

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Flexible Wearable Antenna for Body Centric Wireless Communication in S-Band

Cited by 8 publications

References 9 publications

Defining Breast Tumor Location Using a Four-Element Wearable Circular UWB MIMO Antenna Array

Defining Breast Tumor Location Using a Four-Element Wearable Circular UWB MIMO Antenna Array

A novel miniaturized radiometer front-end for early breast cancer detection using ultra-wideband flexible antenna

Graphene Inkjet-Printed Ultrawideband Tapered Coplanar-Waveguide Antenna on Kapton Substrate

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