Wirelessly powered internet-of-things sensors facilitated by an electrically small egyptian axe dipole rectenna

Lin, W; Ziolkowski, RW

Wirelessly powered internet-of-things sensors facilitated by an electrically small egyptian axe dipole rectenna

Lin, W

Ziolkowski, RW

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Publication Type:: Conference Proceeding
Citation:: Asia-Pacific Microwave Conference Proceedings, APMC, 2019, 2019-December, pp. 891-892
Issue Date:: 2019-12-01

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Field	Value	Language
dc.contributor.author	Lin, W https://orcid.org/0000-0003-0337-8554
dc.contributor.author	Ziolkowski, RW
dc.date.accessioned	2020-05-14T20:39:22Z
dc.date.available	2020-05-14T20:39:22Z
dc.date.issued	2019-12-01
dc.identifier.citation	Asia-Pacific Microwave Conference Proceedings, APMC, 2019, 2019-December, pp. 891-892
dc.identifier.isbn	9781728135175
dc.identifier.uri	http://hdl.handle.net/10453/140741
dc.description.abstract	© 2019 IEEE. Wirelessly powered Internet-of-Things (IoT) sensors have many unique advantages compared with wire-powered or battery-based sensors. This paper presents two wirelessly powered sensors (light and temperature) facilitated by a highly compact and efficient electrically small rectenna. The IoT sensor is integrated into the rectifier circuit of the rectenna, which converts the captured AC power to DC energy. The output DC voltage of the rectifier is dependent on the variable impedance of the sensor corresponding to different discerned values. Once an acoustic alarm is attached to this sensor-augmented rectenna, a certain amount of the measured parameter (light or temperature level) can activate the alarm. The receiving antenna of the system is a modified version of a metamaterial-inspired electrically small Egyptian axe dipole (EAD) antenna. By meandering the length of the driven element, inductive impedance was achieved to directly match the receiving antenna to the capacitive impedance of the rectifier circuit. Prototypes of the wirelessly powered light and temperature sensors were fabricated and measured. Experimental results successfully demonstrated the light and temperature sensing performance. Both systems are highly compact and very thin (diameter is 0.13 λ0 and thickness is 0.002 λ0) with a ka value equal to 0.47. They are excellent representatives of WPT-driven sensors for the emerging wireless IoT applications.
dc.language	en
dc.relation	University of Technology Sydney
dc.relation.ispartof	Asia-Pacific Microwave Conference Proceedings, APMC
dc.relation.isbasedon	10.1109/APMC46564.2019.9038497
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Wirelessly powered internet-of-things sensors facilitated by an electrically small egyptian axe dipole rectenna
dc.type	Conference Proceeding
utslib.citation.volume	2019-December
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Strength - GBDTC - Global Big Data Technologies
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	open_access	*
dc.date.updated	2020-05-14T20:39:13Z
pubs.publication-status	Published
pubs.volume	2019-December
utslib.start-page	891

Abstract:

© 2019 IEEE. Wirelessly powered Internet-of-Things (IoT) sensors have many unique advantages compared with wire-powered or battery-based sensors. This paper presents two wirelessly powered sensors (light and temperature) facilitated by a highly compact and efficient electrically small rectenna. The IoT sensor is integrated into the rectifier circuit of the rectenna, which converts the captured AC power to DC energy. The output DC voltage of the rectifier is dependent on the variable impedance of the sensor corresponding to different discerned values. Once an acoustic alarm is attached to this sensor-augmented rectenna, a certain amount of the measured parameter (light or temperature level) can activate the alarm. The receiving antenna of the system is a modified version of a metamaterial-inspired electrically small Egyptian axe dipole (EAD) antenna. By meandering the length of the driven element, inductive impedance was achieved to directly match the receiving antenna to the capacitive impedance of the rectifier circuit. Prototypes of the wirelessly powered light and temperature sensors were fabricated and measured. Experimental results successfully demonstrated the light and temperature sensing performance. Both systems are highly compact and very thin (diameter is 0.13 λ0 and thickness is 0.002 λ0) with a ka value equal to 0.47. They are excellent representatives of WPT-driven sensors for the emerging wireless IoT applications.

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http://hdl.handle.net/10453/140741