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A Single-Layer Dual-Band Array at Low Frequency Ratio with Concurrent Broad Fan Beam and Narrow Pencil Beam
Mei Li1; Lin Pu2; Ming-Chun Tang2; Lei Zhu3
2021-12-29
Source PublicationIEEE Transactions on Antennas and Propagation
ISSN0018-926X
Abstract

A single-layer, dual-band, shared-aperture array with a broad fan beam in the lower band centered at 5 GHz and a narrow pencil beam in the adjacent upper band centered at 5.8 GHz is presented in this paper. First, the schematic diagram of a dual-band array with its beamwidth regulation capability is presented. Then, two key components, i.e., a novel dual-band patch antenna element and a compact filtering phase shifter (FPS) are developed. The antenna element has counterintuitive beam patterns with broad azimuthal half-power beamwidth (HPBW) of 183.3° in the lower band but much narrower azimuthal HPBW of 68.5° in the upper band, indicating its excellent ability in beamwidth regulation with a figure of merit (FoM) of 2.31. Meanwhile, the FPS serves as a band-stop filter in the lower band and a phase shifter in the upper band. Furthermore, a two-element series-fed subarray is designed by cascading two properly designed antenna elements through the FPS. Finally, a parallel-series-fed array consisting of four rows of the series-fed subarrays is implemented, and a prototype is fabricated and tested. The measured results, in good agreement with the simulated ones, have demonstrated that the array satisfactorily attains a broad fan beam with azimuthal HPBW of 156° and gain of 11.05 dBi at 5 GHz and a narrow pencil beam with azimuthal HPBW of 30° and gain of 16.23 dBi at 5.8 GHz under a shared aperture of 1.37λ0×3.53λ0×0.05λ0, indicating an enhanced FoM up to 4.48. The FoM and gain could be further improved by simply expanding the array’s dimension based on the developed array topology.

KeywordAntenna Arrays Antenna Radiation Patterns Arrays Broad Beamwidth Dual Band Dual-band Fan Beam Fans Patch Antennas Patch Antennas Pencil Beam Phase Shifters Regulation
DOI10.1109/TAP.2021.3137489
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering ; Telecommunications
WOS SubjectEngineering, Electrical & Electronic ; Telecommunications
WOS IDWOS:000791795600024
Scopus ID2-s2.0-85122305769
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Corresponding AuthorLei Zhu
Affiliation1.School of Microelectronics and Communication Engineering, Chongqing University, Chongqing 400044, China, and Department of Electrical and Computer Engineering, University of Macau, Macau SAR, 999078, China.
2.School of Microelectronics and Communication Engineering, Chongqing University, Chongqing 400044, China.
3.Department of Electrical and Computer Engineering, University of Macau, Macau SAR, 999078, China. (e-mail: LeiZhu@um.edu.mo)
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Mei Li,Lin Pu,Ming-Chun Tang,et al. A Single-Layer Dual-Band Array at Low Frequency Ratio with Concurrent Broad Fan Beam and Narrow Pencil Beam[J]. IEEE Transactions on Antennas and Propagation,2021.
APA Mei Li,Lin Pu,Ming-Chun Tang,&Lei Zhu.(2021).A Single-Layer Dual-Band Array at Low Frequency Ratio with Concurrent Broad Fan Beam and Narrow Pencil Beam.IEEE Transactions on Antennas and Propagation.
MLA Mei Li,et al."A Single-Layer Dual-Band Array at Low Frequency Ratio with Concurrent Broad Fan Beam and Narrow Pencil Beam".IEEE Transactions on Antennas and Propagation (2021).
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