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Dispenser printed flexible rectenna for dual-ISM band high-efficiency supercapacitor charging

Dispenser printed flexible rectenna for dual-ISM band high-efficiency supercapacitor charging
Dispenser printed flexible rectenna for dual-ISM band high-efficiency supercapacitor charging
This paper presents a dual-band sub-1 GHz rectenna for near and far-field powering of Internet of Things(IoT) nodes. The rectifier is based on a coplanar waveguide (CPW) voltage doubler with inductive matching, achieving over 80% power conversion efficiency (PCE) at 10 dBm and 915 MHz.The rectifier is designed to directly charge a 6.8 mF supercapacitor with no DC power management circuitry or load tracking, achieving the highest reported average charging efficiency of47.2% and 33.3%, at 433 and 915 MHz respectively. From6 dBm input power, a 1.5-2.8 mA dummy load can be RF-powered with over 30% duty-cycle at 915 MHz. A dual-band single-layer antenna is designed and fabricated using dispenser printing on a flexible polyimide substrate. The antenna maintains over 2.1 dBi gain at 915 MHz with omnidirectional patterns, whileoccupying under 10×10 cm. The integrated rectenna is evaluatedin two real-world applications: energy harvesting from a 915MHz transmitter showing a 49% wireless charging efficiency for a 7.4μW/cm2incident power density; and ambient energy harvesting generating 47 mJ in 5 seconds at 3 to 5 cm from ahandheld two-way radio.
IEEE
Wagih, Mahmoud
7e7b16ba-0c64-4f95-bd3c-99064055f693
Weddell, Alex S.
3d8c4d63-19b1-4072-a779-84d487fd6f03
Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d
Wagih, Mahmoud
7e7b16ba-0c64-4f95-bd3c-99064055f693
Weddell, Alex S.
3d8c4d63-19b1-4072-a779-84d487fd6f03
Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d

Wagih, Mahmoud, Weddell, Alex S. and Beeby, Steve (2021) Dispenser printed flexible rectenna for dual-ISM band high-efficiency supercapacitor charging. In 2021 IEEE Wireless Power Transfer Conference (WPTC). IEEE. 4 pp . (In Press)

Record type: Conference or Workshop Item (Paper)

Abstract

This paper presents a dual-band sub-1 GHz rectenna for near and far-field powering of Internet of Things(IoT) nodes. The rectifier is based on a coplanar waveguide (CPW) voltage doubler with inductive matching, achieving over 80% power conversion efficiency (PCE) at 10 dBm and 915 MHz.The rectifier is designed to directly charge a 6.8 mF supercapacitor with no DC power management circuitry or load tracking, achieving the highest reported average charging efficiency of47.2% and 33.3%, at 433 and 915 MHz respectively. From6 dBm input power, a 1.5-2.8 mA dummy load can be RF-powered with over 30% duty-cycle at 915 MHz. A dual-band single-layer antenna is designed and fabricated using dispenser printing on a flexible polyimide substrate. The antenna maintains over 2.1 dBi gain at 915 MHz with omnidirectional patterns, whileoccupying under 10×10 cm. The integrated rectenna is evaluatedin two real-world applications: energy harvesting from a 915MHz transmitter showing a 49% wireless charging efficiency for a 7.4μW/cm2incident power density; and ambient energy harvesting generating 47 mJ in 5 seconds at 3 to 5 cm from ahandheld two-way radio.

Text
MWagih_WPT2021_PrintedRectenna - Accepted Manuscript
Available under License Creative Commons Attribution.
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More information

Accepted/In Press date: April 2021
Venue - Dates: 2021 IEEE Wireless Power Transfer Conference (WPTC), San Diego, CA, Virtual, United States, 2021-06-01 - 2021-06-04

Identifiers

Local EPrints ID: 448213
URI: http://eprints.soton.ac.uk/id/eprint/448213
PURE UUID: a508aef6-aec9-49e0-893f-4eadd5fd35cc
ORCID for Mahmoud Wagih: ORCID iD orcid.org/0000-0002-7806-4333
ORCID for Alex S. Weddell: ORCID iD orcid.org/0000-0002-6763-5460
ORCID for Steve Beeby: ORCID iD orcid.org/0000-0002-0800-1759

Catalogue record

Date deposited: 15 Apr 2021 16:31
Last modified: 17 Jul 2021 02:10

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Contributors

Author: Mahmoud Wagih ORCID iD
Author: Alex S. Weddell ORCID iD
Author: Steve Beeby ORCID iD

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