Dual-Band Elliptical Planar Conductive Polymer Antenna Printed on a Flexible Substrate

Hamouda, Z.; Wojkiewicz, J.-L.; Pud, A. A.; Koné, L.; Belaabed, B.; Bergheul, S.; Lasri, T.

doi:10.1109/tap.2015.2479643

Cited by 42 publications

(25 citation statements)

References 20 publications

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“…This choice reduces the number of π conjugation defects in the polymer backbone [20]. This mixture has demonstrated a very low percolation threshold and a high conductivity [21]. Finally, to improve the mechanical properties of the material, the PANI salt was blended with polyurethane (PU) (Bayer, Desmopan 6065A).…”

Section: Materials Preparation and Film Fabricationmentioning

confidence: 99%

“…However, its relatively low conductivity for this application represents a limitation that must be overcome. One of the options retained to increase the conductivity is the addition of carbon nanotubes in the polymer matrix [19][20][21][22]. This choice (PANI/ MWCNTs) has been made, obviously, on the promise of performance enhancement, thanks to very stable properties (electrical, mechanical and thermal), but also on cost considerations compared to alternative doping solutions based on nano-particles of gold or silver.…”

Section: Introductionmentioning

confidence: 99%

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Flexible UWB organic antenna for wearable technologies application

Hamouda

Wojkiewicz

Pud

et al. 2018

IET Microwaves, Antennas & Propagation

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New generations of printed flexible antennas are playing an important role in wireless communication systems. The ultra wide band and wearable possibilities are critical aspects of these kinds of antennas. In this study, the proposed antenna is an elliptical monopole fed by a coplanar waveguide; it uses a kapton substrate and it is optimised to work from 1 to 8 GHz. In the case of copper, a conductive nanocomposite material based on a polymer (polyaniline: PANI) and charged by multiwalled carbon nanotubes (MWCNTs) is exploited. The flexibility of both the kapton substrate and the nanocomposite (PANI/MWCNTs) provides the ability to crumple the antenna paving the way to potential applications for body‐worn wireless communications systems. In this study, the performance of the antenna is investigated in terms of return loss, radiation patterns and gain for both crumpled and uncrumpled antennas. The results confirm that performance remains at a good level when the antenna is crumpled.

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Section: Materials Preparation and Film Fabricationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flexible UWB organic antenna for wearable technologies application

Hamouda

Wojkiewicz

Pud

et al. 2018

IET Microwaves, Antennas & Propagation

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show abstract

“…Recently, conductive polymers and traditional carbon-based materials have been explored as conductive materials instead of metals to fabricate conformal antennas [32][33][34][35]. These materials have good flexibility and are chemically inert, but suffer from mediocre conductivity, which makes it difficult for the antennas to achieve good radiation characteristics in the RF region [36,37]. At the same time, the film-forming process of these materials is complicated and this leads to prohibitive cost.…”

Section: Introductionmentioning

confidence: 99%

Compact and Low-Profile UWB Antenna Based on Graphene-Assembled Films for Wearable Applications

Fang

Song

Zhao

et al. 2020

Sensors

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In this article, a graphene-assembled film (GAF)-based compact and low-profile ultra-wide bandwidth (UWB) antenna is presented and tested for wearable applications. The highly conductive GAFs (~106 S/m) together with the flexible ceramic substrate ensure the flexibility and robustness of the antenna, which are two main challenges in designing wearable antennas. Two H-shaped slots are introduced on a coplanar-waveguide (CPW) feeding structure to adjust the current distribution and thus improve the antenna bandwidth. The compact GAF antenna with dimensions of 32 × 52 × 0.28 mm3 provides an impedance bandwidth of 60% (4.3–8.0 GHz) in simulation. The UWB characteristics are further confirmed by on-body measurements and show a bending insensitive bandwidth of ~67% (4.1–8.0 GHz), with the maximum gain at 7.45 GHz being 3.9 dBi and 4.1 dBi in its flat state and bent state, respectively. Our results suggest that the proposed antenna functions properly in close proximity to a human body and can sustain repetitive bending, which make it well suited for applications in wearable devices.

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“…Some antenna designs are also described with paper substrates, but the paper-based flexible substrate is more fragile than other substrates and has high loss tangent which may degrade the antenna efficiency [21][22][23][24][25][26][27][28][29]. Fabric cloth is also used in flexible antennas, but it is not stretchable, hence it is intricate to use them for frequency-tuneable applications which is still challenging [30]. It is more advisable to use PTFE, PEN, or Kapton polyimide due to their electrical and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

CPW Fed Flexible Graphene Based Thin Dual Band Antenna for Smart Wireless Devices

Vashi¹,

Upadhyaya²

2020

PIER M

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A coplanar waveguide (CPW)-fed flexible dual-band antenna using graphene as conducting material and Kapton polyimide as a substrate is proposed. The antenna shows increased impedance bandwidth due to the use of CPW-feed having the values of 80.29% (1.64-3.84 GHz) and 6.31% (5.52-5.88 GHz), respectively. The antenna has an overall size of 0.38λ × 0.43λ at center frequency of 3.4 GHz. The proposed flexible antenna has gain values of 1.82 dBi and 1.68 dBi with efficiency values more than 86% which makes the antenna commercially viable for smart wireless products having space constraints.

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Dual-Band Elliptical Planar Conductive Polymer Antenna Printed on a Flexible Substrate

Cited by 42 publications

References 20 publications

Flexible UWB organic antenna for wearable technologies application

Flexible UWB organic antenna for wearable technologies application

Compact and Low-Profile UWB Antenna Based on Graphene-Assembled Films for Wearable Applications

CPW Fed Flexible Graphene Based Thin Dual Band Antenna for Smart Wireless Devices

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