Dual-Band, Differentially-Fed Filtenna With Wide Bandwidth, High Selectivity, and Low Cross-Polarization

Li, D; Tang, MC; Wang, Y; Hu, KZ; Ziolkowski, RW

Dual-Band, Differentially-Fed Filtenna With Wide Bandwidth, High Selectivity, and Low Cross-Polarization

Li, D Tang, MC Wang, Y Hu, KZ Ziolkowski, RW

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Publisher:: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Publication Type:: Journal Article
Citation:: IEEE Transactions on Antennas and Propagation, 2022, 70, (6), pp. 4872-4877
Issue Date:: 2022-06-01

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Field	Value	Language
dc.contributor.author	Li, D
dc.contributor.author	Tang, MC
dc.contributor.author	Wang, Y
dc.contributor.author	Hu, KZ
dc.contributor.author	Ziolkowski, RW
dc.date.accessioned	2023-03-09T04:59:39Z
dc.date.available	2023-03-09T04:59:39Z
dc.date.issued	2022-06-01
dc.identifier.citation	IEEE Transactions on Antennas and Propagation, 2022, 70, (6), pp. 4872-4877
dc.identifier.issn	0018-926X
dc.identifier.issn	1558-2221
dc.identifier.uri	http://hdl.handle.net/10453/166797
dc.description.abstract	A compact dual-band, differentially fed filtenna with wide bandwidth, high selectivity, and low cross-polarization is presented. It is composed of a slot-loaded rectangular patch, two pairs of shorting pins, a pair of novel differential coupling feedlines, and a defected ground structure (DGS). Good broadside radiation patterns with an adjustable frequency ratio (FR) between its two bands are realized. A pair of U-shaped slots is loaded on the patch to enhance the bandwidth of the lower passband. The DGS and its compact differential feedlines produce five out-of-band radiation nulls to improve the frequency selectivity of the two passbands. Simultaneously, extra in-band resonances are introduced that broaden the impedance bandwidth while maintaining a compact 0.155λ 0}^{2 aperture size and a relatively low profile ( 0.065λ 0 height). Prototypes were fabricated, assembled, and tested. The measured results, in agreement with their simulated values, demonstrate that it exhibits -10 dB fractional impedance bandwidths of 17.5% and 8.2%, peak realized gain values of 8.4 and 9.5 dBi, and cross-polarization levels smaller than -44 and -40 dB, in its lower and upper passbands, respectively. Its dual-band quasi-elliptic responses have sharp roll-off rates and high stopband suppression levels.
dc.language	English
dc.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
dc.relation	http://purl.org/au-research/grants/arc/DP160102219
dc.relation.ispartof	IEEE Transactions on Antennas and Propagation
dc.relation.isbasedon	10.1109/TAP.2021.3138505
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	0906 Electrical and Electronic Engineering, 1005 Communications Technologies
dc.subject.classification	Networking & Telecommunications
dc.title	Dual-Band, Differentially-Fed Filtenna With Wide Bandwidth, High Selectivity, and Low Cross-Polarization
dc.type	Journal Article
utslib.citation.volume	70
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	*
utslib.copyright.embargo	2024-01-05T00:00:00+1000Z
dc.date.updated	2023-03-09T04:59:29Z
pubs.issue	6
pubs.publication-status	Published
pubs.volume	70
utslib.citation.issue	6

Abstract:

A compact dual-band, differentially fed filtenna with wide bandwidth, high selectivity, and low cross-polarization is presented. It is composed of a slot-loaded rectangular patch, two pairs of shorting pins, a pair of novel differential coupling feedlines, and a defected ground structure (DGS). Good broadside radiation patterns with an adjustable frequency ratio (FR) between its two bands are realized. A pair of U-shaped slots is loaded on the patch to enhance the bandwidth of the lower passband. The DGS and its compact differential feedlines produce five out-of-band radiation nulls to improve the frequency selectivity of the two passbands. Simultaneously, extra in-band resonances are introduced that broaden the impedance bandwidth while maintaining a compact 0.155λ 0}^{2 aperture size and a relatively low profile ( 0.065λ 0 height). Prototypes were fabricated, assembled, and tested. The measured results, in agreement with their simulated values, demonstrate that it exhibits -10 dB fractional impedance bandwidths of 17.5% and 8.2%, peak realized gain values of 8.4 and 9.5 dBi, and cross-polarization levels smaller than -44 and -40 dB, in its lower and upper passbands, respectively. Its dual-band quasi-elliptic responses have sharp roll-off rates and high stopband suppression levels.

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http://hdl.handle.net/10453/166797