A Wideband Low-Profile Tightly Coupled Antenna Array with a Very High Figure of Merit

Alpha O. Bah; Pei Yuan Qin; Richard W. Ziolkowski; Y. Jay Guo; Trevor S. Bird

doi:10.1109/TAP.2019.2891460

A Wideband Low-Profile Tightly Coupled Antenna Array with a Very High Figure of Merit

Alpha O. Bah, Pei Yuan Qin, Richard W. Ziolkowski, Y. Jay Guo, Trevor S. Bird

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

Abstract

A wideband, low-profile, tightly coupled antenna array with a simple feed network is presented. The dipole and feed networks in each unit cell are printed on both sides of a single RT/Duroid 6010 substrate with a relative dielectric constant of 10.2. The feed network, composed of meandered impedance transformer and balun sections, is designed based on Klopfenstein tapered microstrip lines. The wide-angle impedance matching is empowered by a novel wideband metasurface superstrate. For the optimum design, scanning to 70° along the E-plane is obtained together with a very high array figure of merit P _A = 2.84. The H-plane scan extends to 55°. The broadside impedance bandwidth is 5.5:1 (0.80-4.38) GHz with an active voltage standing-wave ratio value ≤2. The overall height of the array above the ground plane is 0.088λ L, where λ L is the wavelength at the lowest frequency of operation. A prototype was fabricated and tested to confirm the design concepts.

Original language	English (US)
Article number	8605378
Pages (from-to)	2332-2343
Number of pages	12
Journal	IEEE Transactions on Antennas and Propagation
Volume	67
Issue number	4
DOIs	https://doi.org/10.1109/TAP.2019.2891460
State	Published - Apr 2019
Externally published	Yes

Keywords

Bandwidth
figure of merit
metasurface (MS)
phased arrays
tightly coupled (TC) arrays
ultrawideband arrays
wide-angle impedance matching (WAIM)

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/TAP.2019.2891460

Cite this

@article{d603cc9059c04f9d97c8deebb13b097b,

title = "A Wideband Low-Profile Tightly Coupled Antenna Array with a Very High Figure of Merit",

abstract = " A wideband, low-profile, tightly coupled antenna array with a simple feed network is presented. The dipole and feed networks in each unit cell are printed on both sides of a single RT/Duroid 6010 substrate with a relative dielectric constant of 10.2. The feed network, composed of meandered impedance transformer and balun sections, is designed based on Klopfenstein tapered microstrip lines. The wide-angle impedance matching is empowered by a novel wideband metasurface superstrate. For the optimum design, scanning to 70° along the E-plane is obtained together with a very high array figure of merit P A = 2.84. The H-plane scan extends to 55°. The broadside impedance bandwidth is 5.5:1 (0.80-4.38) GHz with an active voltage standing-wave ratio value ≤2. The overall height of the array above the ground plane is 0.088λ L, where λ L is the wavelength at the lowest frequency of operation. A prototype was fabricated and tested to confirm the design concepts. ",

keywords = "Bandwidth, figure of merit, metasurface (MS), phased arrays, tightly coupled (TC) arrays, ultrawideband arrays, wide-angle impedance matching (WAIM)",

author = "Bah, {Alpha O.} and Qin, {Pei Yuan} and Ziolkowski, {Richard W.} and Guo, {Y. Jay} and Bird, {Trevor S.}",

note = "Funding Information: This work was supported in part by the Australian Government Research Training Program Scholarship, in part by the Cooperate Research Centre for Space Environment Management (SERC Limited), and in part by the Australia Research Council Discovery Program under Grant DE170101203 and Grant DP160102219. Funding Information: Manuscript received September 4, 2018; revised November 27, 2018; accepted December 13, 2018. Date of publication January 8, 2019; date of current version April 5, 2019. This work was supported in part by the Australian Government Research Training Program Scholarship, in part by the Cooperate Research Centre for Space Environment Management (SERC Limited), and in part by the Australia Research Council Discovery Program under Grant DE170101203 and Grant DP160102219. (Corresponding author: Pei-Yuan Qin.) The authors are with the Global Big Data Technologies Centre, University of Technology Sydney, Ultimo, NSW 2007, Australia (e-mail: alpha.bah@ student.uts.edu.au; peiyuan.qin@uts.edu.au; richard.ziolkowski@uts.edu.au; jay.guo@uts.edu.au). Publisher Copyright: {\textcopyright} 1963-2012 IEEE.",

year = "2019",

month = apr,

doi = "10.1109/TAP.2019.2891460",

language = "English (US)",

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journal = "IEEE Transactions on Antennas and Propagation",

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AU - Qin, Pei Yuan

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AU - Bird, Trevor S.

N1 - Funding Information: This work was supported in part by the Australian Government Research Training Program Scholarship, in part by the Cooperate Research Centre for Space Environment Management (SERC Limited), and in part by the Australia Research Council Discovery Program under Grant DE170101203 and Grant DP160102219. Funding Information: Manuscript received September 4, 2018; revised November 27, 2018; accepted December 13, 2018. Date of publication January 8, 2019; date of current version April 5, 2019. This work was supported in part by the Australian Government Research Training Program Scholarship, in part by the Cooperate Research Centre for Space Environment Management (SERC Limited), and in part by the Australia Research Council Discovery Program under Grant DE170101203 and Grant DP160102219. (Corresponding author: Pei-Yuan Qin.) The authors are with the Global Big Data Technologies Centre, University of Technology Sydney, Ultimo, NSW 2007, Australia (e-mail: alpha.bah@ student.uts.edu.au; peiyuan.qin@uts.edu.au; richard.ziolkowski@uts.edu.au; jay.guo@uts.edu.au). Publisher Copyright: © 1963-2012 IEEE.

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N2 - A wideband, low-profile, tightly coupled antenna array with a simple feed network is presented. The dipole and feed networks in each unit cell are printed on both sides of a single RT/Duroid 6010 substrate with a relative dielectric constant of 10.2. The feed network, composed of meandered impedance transformer and balun sections, is designed based on Klopfenstein tapered microstrip lines. The wide-angle impedance matching is empowered by a novel wideband metasurface superstrate. For the optimum design, scanning to 70° along the E-plane is obtained together with a very high array figure of merit P A = 2.84. The H-plane scan extends to 55°. The broadside impedance bandwidth is 5.5:1 (0.80-4.38) GHz with an active voltage standing-wave ratio value ≤2. The overall height of the array above the ground plane is 0.088λ L, where λ L is the wavelength at the lowest frequency of operation. A prototype was fabricated and tested to confirm the design concepts.

AB - A wideband, low-profile, tightly coupled antenna array with a simple feed network is presented. The dipole and feed networks in each unit cell are printed on both sides of a single RT/Duroid 6010 substrate with a relative dielectric constant of 10.2. The feed network, composed of meandered impedance transformer and balun sections, is designed based on Klopfenstein tapered microstrip lines. The wide-angle impedance matching is empowered by a novel wideband metasurface superstrate. For the optimum design, scanning to 70° along the E-plane is obtained together with a very high array figure of merit P A = 2.84. The H-plane scan extends to 55°. The broadside impedance bandwidth is 5.5:1 (0.80-4.38) GHz with an active voltage standing-wave ratio value ≤2. The overall height of the array above the ground plane is 0.088λ L, where λ L is the wavelength at the lowest frequency of operation. A prototype was fabricated and tested to confirm the design concepts.

KW - Bandwidth

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KW - metasurface (MS)

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KW - tightly coupled (TC) arrays

KW - ultrawideband arrays

KW - wide-angle impedance matching (WAIM)

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ER -

A Wideband Low-Profile Tightly Coupled Antenna Array with a Very High Figure of Merit

Abstract

Keywords

ASJC Scopus subject areas

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