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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ullah, Irfan
in Cooperation with on an Cooperation-Score of 37%
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Publications (6/6 displayed)
- 2024Nanozyme-based sensing of dopamine using cobalt-doped hydroxyapatite nanocomposite from waste bonescitations
- 2024A multiscale finite element modeling for predicting the surface integrity induced by thermo-mechanical loads during high-speed milling of Ti-6Al-4Vcitations
- 2023A wearable all printed textile based 6.78 MHz 15 W output wireless power transfer system and it's screen printed joule heater applicationcitations
- 2022First-principles structural, elastic and optoelectronics study of sodium niobate and tantalate perovskitescitations
- 2022Ultra-thin EBG backed flexible antenna for 24 GHz ISM band WBANcitations
- 2014Variant Molar Mass and Concentration Effect of Polyethylene Glycol over the Physico-Chemical Behaviour of CTAB and SDS
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article
A wearable all printed textile based 6.78 MHz 15 W output wireless power transfer system and it's screen printed joule heater application
Abstract
While research in passive flexible circuits for wireless power transfer (WPT) such as coils and resonators continues to advance, limitations in their power handling and low efficiency have hindered the realization of efficient all-printed high-power wearable WPT receivers. Here, we propose a screen-printed textile-based 6.78 MHz resonant inductive WPT system using planar inductors with concealed metal-insulator-metal tuning capacitors. A printed voltage doubler rectifier based on silicon carbide diodes is designed and integrated with the coils, showing a power conversion efficiency of 80%-90% for 2-40 W inputs over a wide load range. Compared to prior wearable WPT receivers, it offers an order of magnitude improvement in power handling along with higher efficiency (approaching 60%) while using all-printed passives and a compact rectifier. The coils exhibit a simulated specific absorption rate under 0.4 W/kg for 25 W received power, and under 21 °C increase in the coils' temperature for a 15 W DC output. Additional fabric shielding is investigated, reducing harmonics emissions by up to 17 dB. We finally demonstrate a wirelessly-powered textile-based carbon-silver Joule heater, capable of reaching up to 60 °C at 2 cm separation from the transmitter, as a wearable application, which can only be wireless-powered using the proposed system.