Conformal dual-band textile antenna with metasurface for WBAN application

Giman, Fatin Nabilah; Soh, Ping Jack; Jamlos, Mohd Faizal; Lago, Herwansyah; Al‐Hadi, Azremi Abdullah; Abdulmalek, Mohamedfareq; Abdulaziz, Nidhal

doi:10.1007/s00339-016-0626-2

Cited by 13 publications

(12 citation statements)

References 12 publications

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“…Furthermore, these thin metasurface designs can generate geometric phase changes and enable more interesting artificial properties that natural materials do not possess. The basic working mechanism is that gradient metasurfaces can introduce space-variant phase (Pancharatnam–Berry phase) changes and, therefore, they can provide many new features [105,106,107,108,109] and, thus, enable more functional applications in optics and photonics. In addition, they could find wide applications in advanced sensing and diagnostics [110], equivalent-circuit model designs [111], and manipulating visible light [112].…”

Section: Focusing Via Metasurfacesmentioning

confidence: 99%

Metamaterial Lensing Devices

Zhou

et al. 2019

Molecules

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In recent years, the development of metamaterials and metasurfaces has drawn great attention, enabling many important practical applications. Focusing and lensing components are of extreme importance because of their significant potential practical applications in biological imaging, display, and nanolithography fabrication. Metafocusing devices using ultrathin structures (also known as metasurfaces) with superlensing performance are key building blocks for developing integrated optical components with ultrasmall dimensions. In this article, we review the metamaterial superlensing devices working in transmission mode from the perfect lens to two-dimensional metasurfaces and present their working principles. Then we summarize important practical applications of metasurfaces, such as plasmonic lithography, holography, and imaging. Different typical designs and their focusing performance are also discussed in detail.

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Section: Focusing Via Metasurfacesmentioning

confidence: 99%

Metamaterial Lensing Devices

Zhou

et al. 2019

Molecules

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“…Various types of wearable antenna are designed by the researchers in the recent years that include flexible [5–7], textile-based [8–13], single band [10, 13, 14], triple band [7], wideband [5, 6, 8, 15], and antennas with metamaterial [11, 12, 14, 16]. In [16] an artificial magnetic conductor (AMC) structure is used with planar inverted-F antenna (PIFA) to reduce the specific absorption rate (SAR) value.…”

Section: Introductionmentioning

confidence: 99%

“…In [10] an antenna operating at 2.4 GHz is designed and its bending characteristics are studied at different human body parts. In [11, 12] antennas are designed using metamaterials to improve their gain and radiation characteristics. Most of the papers discussed above except [5, 6, 8, 15] are dual or single band antennas, however, a wide band antenna is more desirable for wearable applications due to frequency shifting problem.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the papers discussed above except [5, 6, 8, 15] are dual or single band antennas, however, a wide band antenna is more desirable for wearable applications due to frequency shifting problem. Further volume occupied by these antennas is quite large except in [5, 6], moreover back radiations emitted from antennas are also not considered except in [7, 8, 11, 12, 14, 16] resulting in harmful back radiations towards the human body. Further, the measured gain is quite small in all the above papers, whereas in [8, 12] it is not even calculated.…”

Section: Introductionmentioning

confidence: 99%

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Design and performance analysis of a conformal CPW fed wideband antenna with Mu-Negative metamaterial for wearable applications

Negi

Khanna

Kaur

2019

Int. J. Microw. Wireless Technol.

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In this paper, a flexible CPW fed ultrawide band (UWB) antenna with mu-negative (MNG) metamaterial is designed, fabricated, and tested for wearable applications. Initially, a UWB antenna of size 50 mm × 43 mm is fabricated on two different substrates, viz. flexible FR4 and semi-flexible Rogers RT/duroid 5880. A metamaterial structure fabricated on flexible FR4 shows a magnetic resonance from 7.2 GHz to 9.2 GHz with maximum stop band attenuation (−49 dB) and high MNG value (−2121.6) at 7.87 GHz. Then a (3 × 3) array of designed MNG metasurface is used as ground plane with flexible UWB antenna, which improves its overall gain and radiation pattern. The performance of the flexible antenna with/without metamaterial at various distances from flat and cylindrical three-layered human phantom of skin, fat, and muscle is studied. Further, the bending characteristics at different angles and performance over thin metallic sheet is also evaluated. Additionally, the peak specific absorption rate value averaged over 1 g of tissue at three chosen frequencies from UWB range (3, 5, 10 GHz) with/without metamaterial using 0.3 and 0.1 W of input power is also analyzed. The simulated and measured results are in good agreement which confirms that the designed antenna is a good candidate for wearable applications.

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“…During the last years, there are various antenna designs, which enable antennas with a low profile and lightweight [11]. These antennas include the printed monopole antenna [12–14], printed dipole antenna [15], printed loop antenna [16], printed F-antenna [8], patch antenna [9, 10], coplanar waveguide – fed slot antenna [17], fork-shaped planar antenna [18]. Meanwhile, metasurfaces such as artificial magnetic conductor (AMC), high impedance surface (HIS), and electromagnetic bandgap (EBG) structures are widely used in wearable antenna design due to their ability to shield the radiating element from the human body and achieve good body-antenna isolation, and due to their compatibility with low profile antennas [15].…”

Section: Introductionmentioning

confidence: 99%

Design and performance analysis of dual-band wearable compact low-profile antenna for body-centric wireless communications

Al‐Sehemi

Al-Ghamdi

Dishovsky

et al. 2018

Int. J. Microw. Wireless Technol.

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In this paper, we present a novel dual-band wearable compact flexible antenna for body-centric wireless communications (BCWCs). The design is based on a modified planar dipole with parasitic elements, meandered lines, and a rectangular reflector embedded into a hydrophobic rubber-textile multilayer substrate in order to get both good antenna performance and mechanical properties. The antenna's structure is analyzed and optimized in free space (FS), on a numerical and an experimental homogeneous flat phantom. The overall dimensions of the antenna are 50 mm × 40 mm × 4.6 mm and a prototype mass of 11 g, which makes it suitable for practical applications in BCWCs. The built prototype resonated at 2.47 GHz with a |S11|−26.90 dB and at 5.42 GHz with a |S11|−24.60 dB in the FS. The measured bandwidths are 500 MHz (2.2–2.7 GHz) and 1000 MHz (4.65–5.75 GHz) at lower and higher bands, respectively. The antenna exhibits a measured maximum gain of 1.17 dBi at 2.66 GHz and a radiation efficiency of 28.44% in FS. The 10 g average maximum specific absorption rate is 0.165 W/kg at 2.70 GHz and 0.520 W/kg at 5.24 GHz when the antenna is placed on the numerical phantom at net input power 0.1 W.

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Conformal dual-band textile antenna with metasurface for WBAN application

Cited by 13 publications

References 12 publications

Metamaterial Lensing Devices

Metamaterial Lensing Devices

Design and performance analysis of a conformal CPW fed wideband antenna with Mu-Negative metamaterial for wearable applications

Design and performance analysis of dual-band wearable compact low-profile antenna for body-centric wireless communications

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