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

Guoping Gao; Shaofei Wang; Ruifeng Zhang; Chen Yang; Bin Hu

doi:10.1002/mop.32224

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

Guoping Gao, Shaofei Wang, Ruifeng Zhang, Chen Yang, Bin Hu^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1733-1741
Number of pages	9
Journal	Microwave and Optical Technology Letters
Volume	62
Issue number	4
DOIs	https://doi.org/10.1002/mop.32224
Publication status	Published - 1 Apr 2020
Externally published	Yes

Keywords

electromagnetic bandgap
planar inverted-F antenna
polydimethylsiloxane
wearable antenna

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10.1002/mop.32224

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title = "Flexible EBG-backed PIFA based on conductive textile and PDMS for wearable applications",

abstract = "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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author = "Guoping Gao and Shaofei Wang and Ruifeng Zhang and Chen Yang and Bin Hu",

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AU - Gao, Guoping

AU - Wang, Shaofei

AU - Zhang, Ruifeng

AU - Yang, Chen

AU - Hu, Bin

PY - 2020/4/1

Y1 - 2020/4/1

N2 - 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.

AB - 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.

KW - electromagnetic bandgap

KW - planar inverted-F antenna

KW - polydimethylsiloxane

KW - wearable antenna

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JO - Microwave and Optical Technology Letters

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IS - 4

ER -

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

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Keywords

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