3-D-Printed Phase-Rectifying Transparent Superstrate for Resonant-Cavity Antenna

Hayat, T; Afzal, MU; Lalbakhsh, A; Esselle, KP

3-D-Printed Phase-Rectifying Transparent Superstrate for Resonant-Cavity Antenna

Hayat, T Afzal, MU Lalbakhsh, A Esselle, KP

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Publication Type:: Journal Article
Citation:: IEEE Antennas and Wireless Propagation Letters, 2019, 18 (7), pp. 1400 - 1404
Issue Date:: 2019-07-01

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Field	Value	Language
dc.contributor.author	Hayat, T	en_US
dc.contributor.author	Afzal, MU	en_US
dc.contributor.author	Lalbakhsh, A	en_US
dc.contributor.author	Esselle, KP https://orcid.org/0000-0002-3681-0086	en_US
dc.date.issued	2019-07-01	en_US
dc.identifier.citation	IEEE Antennas and Wireless Propagation Letters, 2019, 18 (7), pp. 1400 - 1404	en_US
dc.identifier.issn	1536-1225	en_US
dc.identifier.uri	http://hdl.handle.net/10453/139187
dc.description.abstract	© 2019 IEEE. A three-dimensional (3-D)-printed nonplanar highly transmitting superstrate is presented to improve the directive radiation characteristics of a resonant-cavity antenna (RCA). Classical RCAs are reported with nonuniform aperture-field distribution that compromises their far-field directivity. The concept of near-field phase correction has been used here to design a phase-rectifying transparent superstrate (PRTS), which was fabricated using the 3-D printing technology. The PRTS is printed using easily accessible polylactic acid filament. It has a significantly lower cost and weight compared to its recently published counterparts, while its performance is comparable. The 3-D printing technology yielded the prototype in less than 4 h, which is considerably less compared to the traditional machining methods. Measurements of the prototype indicated close correspondence between the predicted and the measured results. Significant increase in the antenna performance has been achieved, due to the rectification of the aperture phase distribution. Notable aspects encompass 7.3 dB increase in the antenna peak directivity (from 13-20.3 dBi), significant sidelobe level suppression, and an improvement of aperture efficiency by 36.1%, with a PRTS that costs less than 2.5 USD.	en_US
dc.relation.ispartof	IEEE Antennas and Wireless Propagation Letters	en_US
dc.relation.isbasedon	10.1109/LAWP.2019.2917767	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Networking & Telecommunications	en_US
dc.title	3-D-Printed Phase-Rectifying Transparent Superstrate for Resonant-Cavity Antenna	en_US
dc.type	Journal Article
utslib.citation.volume	7	en_US
utslib.citation.volume	18	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	1005 Communications Technologies	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	closed_access	*
pubs.issue	7	en_US
pubs.publication-status	Published	en_US
pubs.volume	18	en_US

Abstract:

© 2019 IEEE. A three-dimensional (3-D)-printed nonplanar highly transmitting superstrate is presented to improve the directive radiation characteristics of a resonant-cavity antenna (RCA). Classical RCAs are reported with nonuniform aperture-field distribution that compromises their far-field directivity. The concept of near-field phase correction has been used here to design a phase-rectifying transparent superstrate (PRTS), which was fabricated using the 3-D printing technology. The PRTS is printed using easily accessible polylactic acid filament. It has a significantly lower cost and weight compared to its recently published counterparts, while its performance is comparable. The 3-D printing technology yielded the prototype in less than 4 h, which is considerably less compared to the traditional machining methods. Measurements of the prototype indicated close correspondence between the predicted and the measured results. Significant increase in the antenna performance has been achieved, due to the rectification of the aperture phase distribution. Notable aspects encompass 7.3 dB increase in the antenna peak directivity (from 13-20.3 dBi), significant sidelobe level suppression, and an improvement of aperture efficiency by 36.1%, with a PRTS that costs less than 2.5 USD.

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http://hdl.handle.net/10453/139187