Highly-directive cross-polarized backscatterers integrated with a ground plane

Hernandez, O; Buldain, I; Ederra, I; Ziolkowski, RW; Liberal, I

Highly-directive cross-polarized backscatterers integrated with a ground plane

Hernandez, O Buldain, I Ederra, I Ziolkowski, RW Liberal, I

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Publisher:: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Publication Type:: Journal Article
Citation:: IEEE Transactions on Antennas and Propagation, 2021, 69, (10), pp. 6739-6751
Issue Date:: 2021-10-01

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Field	Value	Language
dc.contributor.author	Hernandez, O
dc.contributor.author	Buldain, I
dc.contributor.author	Ederra, I
dc.contributor.author	Ziolkowski, RW
dc.contributor.author	Liberal, I
dc.date.accessioned	2022-05-01T23:25:24Z
dc.date.available	2022-05-01T23:25:24Z
dc.date.issued	2021-10-01
dc.identifier.citation	IEEE Transactions on Antennas and Propagation, 2021, 69, (10), pp. 6739-6751
dc.identifier.issn	0018-926X
dc.identifier.issn	1558-2221
dc.identifier.uri	http://hdl.handle.net/10453/156897
dc.description.abstract	Cross-polarized backscatterers integrated with a ground plane are a key element of different applications, including chipless RFIDs, sensing, ambient backscattering communications, and data storage. The use of a cross-polarized signal removes the difficulties arising from the strong copolar signal reflected by the ground plane. Concurrently, the cross-polarized signal is typically very weak, hindering the effectiveness of crosspolarized backscatterers in noisy and uncontrolled environments. Herein, the generalized optical theorem is used to derive upper bounds on the cross-polarized backscattering cross section of systems integrated with a ground plane and identify viable strategies to design them based on highly directive scattering systems. Popular antenna configurations, including elementary electric and magnetic dipoles and their combinations, such as Huygens sources and endfire arrays, are examined to ascertain which ones can be used to realize highly directive cross-polarized backscattering performance when they are integrated with a ground plane. Realistic single-antenna elements that attain the upper-bound performance are identified. A two-element endfire array based on crossed electric dipole elements also achieves the upper bound performance, further confirming the efficacy of the derived cross-polarized backscattering bounds.
dc.language	English
dc.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
dc.relation.ispartof	IEEE Transactions on Antennas and Propagation
dc.relation.isbasedon	10.1109/TAP.2021.3076236
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0906 Electrical and Electronic Engineering, 1005 Communications Technologies
dc.subject.classification	Networking & Telecommunications
dc.title	Highly-directive cross-polarized backscatterers integrated with a ground plane
dc.type	Journal Article
utslib.citation.volume	69
utslib.for	0906 Electrical and Electronic Engineering
utslib.for	1005 Communications Technologies
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/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
utslib.copyright.status	open_access	*
dc.date.updated	2022-05-01T23:25:22Z
pubs.issue	10
pubs.publication-status	Published
pubs.volume	69
utslib.citation.issue	10

Abstract:

Cross-polarized backscatterers integrated with a ground plane are a key element of different applications, including chipless RFIDs, sensing, ambient backscattering communications, and data storage. The use of a cross-polarized signal removes the difficulties arising from the strong copolar signal reflected by the ground plane. Concurrently, the cross-polarized signal is typically very weak, hindering the effectiveness of crosspolarized backscatterers in noisy and uncontrolled environments. Herein, the generalized optical theorem is used to derive upper bounds on the cross-polarized backscattering cross section of systems integrated with a ground plane and identify viable strategies to design them based on highly directive scattering systems. Popular antenna configurations, including elementary electric and magnetic dipoles and their combinations, such as Huygens sources and endfire arrays, are examined to ascertain which ones can be used to realize highly directive cross-polarized backscattering performance when they are integrated with a ground plane. Realistic single-antenna elements that attain the upper-bound performance are identified. A two-element endfire array based on crossed electric dipole elements also achieves the upper bound performance, further confirming the efficacy of the derived cross-polarized backscattering bounds.

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http://hdl.handle.net/10453/156897