Compact, Low-Profile, Linearly and Circularly Polarized Filtennas Enabled with Custom-Designed Feed-Probe Structures

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

Compact, Low-Profile, Linearly and Circularly Polarized Filtennas Enabled with Custom-Designed Feed-Probe Structures

Tang, MC Li, D 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, 2020, 68, (7), pp. 5247-5256
Issue Date:: 2020-07-01

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Field	Value	Language
dc.contributor.author	Tang, MC
dc.contributor.author	Li, D
dc.contributor.author	Wang, Y
dc.contributor.author	Hu, KZ
dc.contributor.author	Ziolkowski, RW
dc.date.accessioned	2020-08-13T03:23:59Z
dc.date.available	2020-08-13T03:23:59Z
dc.date.issued	2020-07-01
dc.identifier.citation	IEEE Transactions on Antennas and Propagation, 2020, 68, (7), pp. 5247-5256
dc.identifier.issn	0018-926X
dc.identifier.issn	1558-2221
dc.identifier.uri	http://hdl.handle.net/10453/142085
dc.description.abstract	© 1963-2012 IEEE. Compact, low-profile, linearly polarized (LP), and circularly polarized (CP) patch-based filtennas are realized with a custom-designed coupling probe. It introduces a deep null at both the lower and upper band edges of the filter response. These two nulls facilitate a quasi-elliptic bandpass behavior and can be independently controlled to achieve sharp band-edge skirts and high out-of-band suppression levels. The CP version evolves from the LP design by introducing a T-shaped near-field resonant parasitic (NFRP) element near the probe to create two transmission paths with an inherent 90° phase difference. Its presence facilitates the simultaneous excitation of the TM10 and TM01 modes of the patch without the need for any power divider or phase delay line, reducing the design complexity and lowering the insertion loss. Prototypes were fabricated, assembled, and tested. The measured results agree well with their simulated values. They are low profile (0.03 \lambda _{0} height) and compact in size ( 0.04~\lambda _{0}^{2} footprint). The LP and CP prototypes exhibit, respectively, a -10-dB fractional impedance bandwidth of 7% and an overlapping axial ratio fractional bandwidth of 4.5%. Excellent measured performance characteristics are demonstrated, including flat passband realized gain values and filter responses with sharp roll-off rates and high out-of-band 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.hasversion	Accepted manuscript version	en
dc.relation.isbasedon	10.1109/TAP.2020.2982504
dc.rights	© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.	en_US
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	0906 Electrical and Electronic Engineering, 1005 Communications Technologies
dc.subject.classification	Networking & Telecommunications
dc.title	Compact, Low-Profile, Linearly and Circularly Polarized Filtennas Enabled with Custom-Designed Feed-Probe Structures
dc.type	Journal Article
utslib.citation.volume	68
utslib.for	0906 Electrical and Electronic Engineering
utslib.for	1005 Communications Technologies
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	*
utslib.copyright.embargo	2022-03-27T00:00:00+1000Z
dc.date.updated	2020-08-13T03:21:09Z
pubs.issue	7
pubs.publication-status	Published
pubs.volume	68
utslib.citation.issue	7

Abstract:

© 1963-2012 IEEE. Compact, low-profile, linearly polarized (LP), and circularly polarized (CP) patch-based filtennas are realized with a custom-designed coupling probe. It introduces a deep null at both the lower and upper band edges of the filter response. These two nulls facilitate a quasi-elliptic bandpass behavior and can be independently controlled to achieve sharp band-edge skirts and high out-of-band suppression levels. The CP version evolves from the LP design by introducing a T-shaped near-field resonant parasitic (NFRP) element near the probe to create two transmission paths with an inherent 90° phase difference. Its presence facilitates the simultaneous excitation of the TM10 and TM01 modes of the patch without the need for any power divider or phase delay line, reducing the design complexity and lowering the insertion loss. Prototypes were fabricated, assembled, and tested. The measured results agree well with their simulated values. They are low profile (0.03 \lambda _{0} height) and compact in size ( 0.04~\lambda _{0}^{2} footprint). The LP and CP prototypes exhibit, respectively, a -10-dB fractional impedance bandwidth of 7% and an overlapping axial ratio fractional bandwidth of 4.5%. Excellent measured performance characteristics are demonstrated, including flat passband realized gain values and filter responses with sharp roll-off rates and high out-of-band suppression levels.

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http://hdl.handle.net/10453/142085