Compact and Low-Profile Textile EBG-Based Antenna for Wearable Medical Applications

Ashyap, Adel Y. I.; Abidin, Zuhairiah Zainal; Dahlan, Samsul Haimi; Majid, H. A.; Shah, Shaharil Mohd; Kamarudin, M. R.; Alomainy, Akram

doi:10.1109/lawp.2017.2732355

Cited by 176 publications

(117 citation statements)

References 18 publications

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“…The models have four layers which are bone, muscle, fat, and skin. The conductivity, density, permittivity, and thickness, of each layer, are listed in Table . The result is depicted in Figure .…”

Section: Further Studies and Discussionmentioning

confidence: 99%

Metamaterial inspired fabric antenna for wearable applications

Ashyap

Abidin

Dahlan

et al. 2018

Int J RF Microw Comput Aided Eng

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A compact and robust fabric antenna incorporated with metamaterials (MTM) at 2.4 GHz is introduced for wearable devices application where the MTM behaves as EBG/AMC. The benefit of introducing MTM in a wearable antenna is to diminish the influence of frequency detuning and reduces the backward radiation specifically when loaded on the human body. The overall size of the presented antenna incorporated with MTM is 60 × 60 × 2.4 mm3. Furthermore, the integrated design has the capability of controlling Specific absorption rate (SAR) and improved the bandwidth, front‐to‐back ratio (FBR), and gain up to 14.5%, 13.7dB, and 7.5dBi, respectively. The operations under different bending diameters on real and modelled human body are studied. Compared with conventional antennas, MTM‐inspired antennas reduce the SAR to safe levels of more than 90%. The presented integrated design can be a good candidate for incorporation into a variety of flexible systems for medical application.

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Section: Further Studies and Discussionmentioning

confidence: 99%

Metamaterial inspired fabric antenna for wearable applications

Ashyap

Abidin

Dahlan

et al. 2018

Int J RF Microw Comput Aided Eng

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“…The proposed antenna is manually fabricated as shown in Figure A and measured on body using PNA‐X Network Analyzer, N5244A. In the measurement set up shown in Figure B, the antenna is separated from EBG surface by 0.5‐ mm‐thick, highly flexible Rohacell form to prevent direct contact between the SMA connector and the EBG surface . The measured return loss and the VSWR are presented in Figure A,B, respectively.…”

Section: Fabrication Measurement and Testingmentioning

confidence: 99%

CPW-fed flexible monopole antenna with H and two concentric C slots on textile substrate, backed by EBG for WBAN

Abdu

Zheng

Jabire

et al. 2018

Int J RF Microw Comput Aided Eng

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A compact coplanar wave guide fed flexible monopole antenna on textile substrate is presented in this article. It consists of H and two concentric C slots. The H slot excites multiple band and the two concentric C slots improve the bandwidths. Measured impedance bandwidths are observed to be 1.5‐3.0 GHz and 4.5‐6.5 GHz for the first and second bands, respectively. Electromagnetic band gap structure has been used to achieve low specific absorption rate. The antenna has a compact size of 0.367 × 0.367λ. A sample was fabricated and experimentally characterized to verify the design concept and to validate the simulated results.

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“…Reference reports a novel AMC plane to reduce the SAR value, while its H‐shaped unit cell is bulky so that the amount of the unit cells is limited. Reference presents an inverse E‐shaped microstrip monopole antenna backed with a compact EBG structure based on a flexible denim substrate. However, both the monopole antenna and the EBG unit cell require a complicated and high‐precision manufacturing procedure, which is not convenient in production.…”

Section: Introductionmentioning

confidence: 99%

Flexible EBG‐backed PIFA based on conductive textile and PDMS for wearable applications

Gao

Wang

Zhang

et al. 2019

Micro & Optical Tech Letters

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A wearable planar inverted‐F antenna (PIFA) fed by the coplanar waveguide (CPW) and backed with an optimized electromagnetic bandgap (EBG) structure is presented. The antenna is made of conductive textile and polydimethylsiloxane (PDMS), which is a conformal and robust solution to wearable applications. The EBG unit cell is miniaturized according to the equivalent circuit model, and the cross‐polarization is suppressed due to its approximate 180° reflection phase in the orthogonal direction. The measured impedance bandwidth ranges from 2.30 to 2.65 GHz, which covers the 2.4 GHz Industrial Scientific Medical (ISM) band. The antenna keeps a high gain and efficiency above 70% under different conditions including being flat, bent, and close to the human body. The maximum SAR value is limited to 0.612 and 0.330 W/kg under 1 and 10 g standard, respectively. Therefore, the antenna is a promising candidate for wearable applications in various domains.

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Compact and Low-Profile Textile EBG-Based Antenna for Wearable Medical Applications

Cited by 176 publications

References 18 publications

Metamaterial inspired fabric antenna for wearable applications

Metamaterial inspired fabric antenna for wearable applications

CPW-fed flexible monopole antenna with H and two concentric C slots on textile substrate, backed by EBG for WBAN

Flexible EBG‐backed PIFA based on conductive textile and PDMS for wearable applications

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