Wearable e-textile wireless RF power supply based on a textile supercapacitor and a flexible rectenna filament
Wearable e-textile wireless RF power supply based on a textile supercapacitor and a flexible rectenna filament
Sustainable battery-free operation is a requirement for wearable electronic textiles. This work presents a complete wearable textile-based radio frequency energy harvester and an energy storage module. The rectifying-antenna (rectenna) receives incident sub-1 GHz RF power from a license-free transmitter and converts it to DC with up to 90% efficiency and 8 V DC output from under 4 mW of RF power. A spray-coated in-house textile 7.1 mF supercapacitor is integrated as an energy storage unit. Electrochemical Impedance Spectroscopy has been used to characterize the supercapacitor's impedance and a four-branch circuit model has been obtained. The 7.1 mF textile supercapacitor has been demonstrated charging to 1 V (3.55 mJ) in under 11 seconds at 1.2 m separation from a wireless power source, demonstrating over 15% end-to-end efficiency, the highest charging efficiency of a textile supercapacitor from an integrated flexible energy source.
Antenna, Wireless Power Transfer, Supercapacitor, RF Energy Harvesting, Rectenna, E-textiles
Wagih, Mahmoud
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Hillier, Nicholas
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Yong, Sheng
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Weddell, Alex S.
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Beeby, Steve
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Wagih, Mahmoud
7e7b16ba-0c64-4f95-bd3c-99064055f693
Hillier, Nicholas
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Yong, Sheng
688cbcf0-b32e-4b2b-9891-a0e0e1f59d71
Weddell, Alex S.
3d8c4d63-19b1-4072-a779-84d487fd6f03
Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d
Wagih, Mahmoud, Hillier, Nicholas, Yong, Sheng, Weddell, Alex S. and Beeby, Steve
(2020)
Wearable e-textile wireless RF power supply based on a textile supercapacitor and a flexible rectenna filament.
IEEE FLEPS 2020: IEEE International Conference on Flexible and Printable Sensors and Systems, , Manchester, United Kingdom.
16 - 19 Aug 2020.
(In Press)
Record type:
Conference or Workshop Item
(Paper)
Abstract
Sustainable battery-free operation is a requirement for wearable electronic textiles. This work presents a complete wearable textile-based radio frequency energy harvester and an energy storage module. The rectifying-antenna (rectenna) receives incident sub-1 GHz RF power from a license-free transmitter and converts it to DC with up to 90% efficiency and 8 V DC output from under 4 mW of RF power. A spray-coated in-house textile 7.1 mF supercapacitor is integrated as an energy storage unit. Electrochemical Impedance Spectroscopy has been used to characterize the supercapacitor's impedance and a four-branch circuit model has been obtained. The 7.1 mF textile supercapacitor has been demonstrated charging to 1 V (3.55 mJ) in under 11 seconds at 1.2 m separation from a wireless power source, demonstrating over 15% end-to-end efficiency, the highest charging efficiency of a textile supercapacitor from an integrated flexible energy source.
Text
Rectenna_Supercap_FLEPS
- Author's Original
More information
Accepted/In Press date: 2020
Venue - Dates:
IEEE FLEPS 2020: IEEE International Conference on Flexible and Printable Sensors and Systems, , Manchester, United Kingdom, 2020-08-16 - 2020-08-19
Keywords:
Antenna, Wireless Power Transfer, Supercapacitor, RF Energy Harvesting, Rectenna, E-textiles
Identifiers
Local EPrints ID: 441677
URI: http://eprints.soton.ac.uk/id/eprint/441677
PURE UUID: c3e83b2b-2bfb-43aa-a92f-10eb43749d34
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Date deposited: 24 Jun 2020 16:30
Last modified: 06 Jun 2024 04:10
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Contributors
Author:
Mahmoud Wagih
Author:
Nicholas Hillier
Author:
Sheng Yong
Author:
Alex S. Weddell
Author:
Steve Beeby
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