Inkjet-printing of hybrid Ag/conductive polymer towards strechable microwave devices

Pacchini, Sébastien; Cometto, Mathieu; Chok, Jian Jie; Dufour, Gaëtan; Tiercelin, Nicolas; Pernod, Philippe; Tay, Beng Kang; Coquet, Philippe

doi:10.1109/eumc.2015.7345901

Cited by 4 publications

(3 citation statements)

References 22 publications

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“…Flexible antennas made for wearable purposes need unique attributes such as limited visibility for the user, robust antenna performance in different conditions, mechanical stability, and withstanding rigor, such as washing and ironing [ 71 ]. Different types of substrates used in wearable antennas have been reported in a prior article [ 3 ].…”

Section: Materials For Flexible Antennasmentioning

confidence: 99%

Flexible Antennas: A Review

et al. 2020

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The field of flexible antennas is witnessing an exponential growth due to the demand for wearable devices, Internet of Things (IoT) framework, point of care devices, personalized medicine platform, 5G technology, wireless sensor networks, and communication devices with a smaller form factor to name a few. The choice of non-rigid antennas is application specific and depends on the type of substrate, materials used, processing techniques, antenna performance, and the surrounding environment. There are numerous design innovations, new materials and material properties, intriguing fabrication methods, and niche applications. This review article focuses on the need for flexible antennas, materials, and processes used for fabricating the antennas, various material properties influencing antenna performance, and specific biomedical applications accompanied by the design considerations. After a comprehensive treatment of the above-mentioned topics, the article will focus on inherent challenges and future prospects of flexible antennas. Finally, an insight into the application of flexible antenna on future wireless solutions is discussed.

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Section: Materials For Flexible Antennasmentioning

confidence: 99%

Flexible Antennas: A Review

et al. 2020

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“…If the principle is obvious for lines, it is less for patch antennas. Some results were published in [28] for a patch antenna with PEDOT inclusion in the quarterwave matching line without much damping of the response of the antenna and good matching of the simulation results. Yet, the patch being large (6900*8510 µm), its resistance to flexion is quite low.…”

Section: Flexible Devicesmentioning

confidence: 98%

“…CNTs were also used in antennas as loads [23] or conductors as CNTs can be metallic [24][25] [26]. Other applications relying on the ink-jet printing of CNT-loaded conductive ink were done in [27], [28] to fabricate diverse RF circuits. Some more work was done on CNT antennas at higher frequencies, making use of the quantum effects of the CNTs [29] to design millimetre wave resonant antennas.…”

Section: Carbon Nanotubes For Rf Applicationsmentioning

confidence: 99%

Use of carbon nanotubes for passive radio-frequency devices

Cometto¹

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As devices get more connected and communication increase in density, new challenges arise. The usual frequency bands used are getting crowded by the number of applications, and the relatively low working frequencies limit the available bandwidth and speed. Applications are now implemented in the GHz, but next generation devices shift towards higher frequencies into the millimetre band (30-300 GHz), seeking larger bandwidths, smaller devices and antenna size and improvement in spatial resolution. (High bitrate communications, Backhaul, radars, imaging, bio-sensors…) These emerging devices have a need for passive framework for feeding and supporting while keeping the efficiency high, the dimensions short and the bandwidth large. The problematic of this thesis is to devise an innovative way to answer those needs. Some solutions have of course emerged in the literature, and the plan here is to fork from those pre-existing results. Most solutions revolve around using vertically aligned micro/nano-structures to guide a wave or to reduce wave velocity. The idea is to introduce Vertically-Aligned Carbon Nanotube Forests (VA-CNT) into those designs, for they display inherently conductive anisotropy while improving from the previous solutions in terms of density and equivalent conductivity and ease of fabrication.

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