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A 2.45 GHz rectenna screen-printed on polycotton for on-body RF power transfer and harvesting

A 2.45 GHz rectenna screen-printed on polycotton for on-body RF power transfer and harvesting
A 2.45 GHz rectenna screen-printed on polycotton for on-body RF power transfer and harvesting
This paper presents a 2.45 GHz rectenna on textile for RF power transfer and harvesting. Thin 350 μm polycotton is used as a baseline flexible substrate and screen printing technique is used to map different layers. A 310 μm interface layer is first printed on both sides of polycotton in order to smooth its surface. Silver layer is then printed onto the interface layers to map the antenna and the rectifier layouts. The substrate is characterized over the 0.5-4.5 GHz frequency range using the two-line method. A relative permittivity of 3.23 and a loss tangent of 0.06 have been obtained at 2.45 GHz. A standard patch antenna matched to 50 Ω and a dual-polarization rectenna have been designed. Measurement of the return loss S11 of the patch antenna shows an excellent correlation with simulation results, thus indicating that the two-line characterisation is accurate. The performance of the polycotton antenna and rectenna is evaluated and compared with FR4. The measured radiation efficiency is 11% for the polycotton antenna, and 30% for the FR4 antenna. The polycotton rectenna generates 300 mV and 100 μW, 15 cm from a 100 mW EIRP transmitter.
IEEE
Adami, Salah-Eddine
8ee79e33-d6a9-4220-aaee-8cc9eaad6709
Zhu, Dibin
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Li, Yi
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Mellios, Evangelos
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Stark, Bernard
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Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d
Adami, Salah-Eddine
8ee79e33-d6a9-4220-aaee-8cc9eaad6709
Zhu, Dibin
ec52eae1-39fa-427c-968b-e76089a464a6
Li, Yi
5c22f4d6-a339-4b3d-a43e-7c55eaf304a7
Mellios, Evangelos
2a6bf1bf-eddc-458e-93de-17c749d68dff
Stark, Bernard
e79fd494-4066-44ca-a158-39552991e932
Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d

Adami, Salah-Eddine, Zhu, Dibin, Li, Yi, Mellios, Evangelos, Stark, Bernard and Beeby, Steve (2015) A 2.45 GHz rectenna screen-printed on polycotton for on-body RF power transfer and harvesting. In 2015 IEEE Wireless Power Transfer Conference (WPTC). IEEE. 4 pp . (doi:10.1109/WPT.2015.7140161).

Record type: Conference or Workshop Item (Paper)

Abstract

This paper presents a 2.45 GHz rectenna on textile for RF power transfer and harvesting. Thin 350 μm polycotton is used as a baseline flexible substrate and screen printing technique is used to map different layers. A 310 μm interface layer is first printed on both sides of polycotton in order to smooth its surface. Silver layer is then printed onto the interface layers to map the antenna and the rectifier layouts. The substrate is characterized over the 0.5-4.5 GHz frequency range using the two-line method. A relative permittivity of 3.23 and a loss tangent of 0.06 have been obtained at 2.45 GHz. A standard patch antenna matched to 50 Ω and a dual-polarization rectenna have been designed. Measurement of the return loss S11 of the patch antenna shows an excellent correlation with simulation results, thus indicating that the two-line characterisation is accurate. The performance of the polycotton antenna and rectenna is evaluated and compared with FR4. The measured radiation efficiency is 11% for the polycotton antenna, and 30% for the FR4 antenna. The polycotton rectenna generates 300 mV and 100 μW, 15 cm from a 100 mW EIRP transmitter.

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More information

Accepted/In Press date: 14 March 2015
e-pub ahead of print date: 2 July 2015
Published date: 2015
Venue - Dates: IEEE Wireless Power Transfer Conference, United States, 2015-05-13 - 2015-05-15
Organisations: EEE

Identifiers

Local EPrints ID: 377508
URI: http://eprints.soton.ac.uk/id/eprint/377508
PURE UUID: 0fe96855-f8e0-4fb3-84f5-fad96f6a8e3c
ORCID for Dibin Zhu: ORCID iD orcid.org/0000-0003-0517-3974
ORCID for Steve Beeby: ORCID iD orcid.org/0000-0002-0800-1759

Catalogue record

Date deposited: 19 Jun 2015 14:58
Last modified: 17 Dec 2019 02:00

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Contributors

Author: Salah-Eddine Adami
Author: Dibin Zhu ORCID iD
Author: Yi Li
Author: Evangelos Mellios
Author: Bernard Stark
Author: Steve Beeby ORCID iD

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