Enhanced pencil-beam scanning CTS leaky-wave antenna based on meander delay line

Yang You; Yunlong Lu; Yi Wang; Jun Xu; Jifu Huang; Wei Hong

doi:10.1109/LAWP.2021.3096084

Enhanced pencil-beam scanning CTS leaky-wave antenna based on meander delay line

Yang You, Yunlong Lu^*, Yi Wang, Jun Xu, Jifu Huang, Wei Hong

^*Corresponding author for this work

Electronic, Electrical and Systems Engineering

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

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Abstract

This letter presents a millimeter-wave (mmW) continuous transverse stub (CTS) leaky-wave antenna (LWA) with pencil-beam broadside radiation, high scanning-rate, and low sidelobe levels (SLLs) characteristics. A parallel-plate waveguide (PPW) meander delay line is employed to control the phase constant of the proposed LWA. By adjusting the length of the transverse electromagnetic TEM-mode PPW delay line, the phase difference between adjacent radiating elements can be altered, achieving flexible control of scanning-rate. Match stubs close to the radiation slots are utilized to suppress the open stopband, which help enlarge the beam scanning range. A linear source generator excited by multiple ports with amplitude tapering is employed to generate the quasi-TEM wave. Combined with additional amplitude tapering among the CTS radiation slots, low SLLs at both principal planes are realized. Experimental results show that the LWA with 12 radiation elements has a scanning range of-68° to 42° over the frequency range of 26-34 GHz (a scanning-rate of 13.75°/GHz) with SLLs lower than 13.5 dB/16.6 dB and a peak gain of over 22.5 dBi.

Original language	English
Pages (from-to)	1760-1764
Number of pages	5
Journal	IEEE Antennas and Wireless Propagation Letters
Volume	20
Issue number	9
Early online date	9 Jul 2021
DOIs	https://doi.org/10.1109/LAWP.2021.3096084
Publication status	Published - 3 Sept 2021

Bibliographical note

Funding Information:
Manuscript received June 20, 2021; accepted July 6, 2021. Date of publication July 9, 2021; date of current version September 3, 2021. This work was supported in part by the National Key R&D Program of China under Project 2018YFB1802100; in part by the National Natural Science Foundation of China under Project 61801252, Project U1809203, and Project 61631012; in part by the Zhejiang Natural Science Foundation under Project LY21F010002; in part by the Guangdong R&D Project in Key Areas under Grant 2019B010156004; in part by the Ningbo Natural Science Foundation under Project 202003N4108; and in part by the Fundamental Research Funds for the Provincial Universities of Zhejiang under Grant SJLY2020001. (Corresponding authors: Yunlong Lu; Jifu Huang.) Yang You, Yunlong Lu, and Jifu Huang are with the Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China (e-mail: 897698810@qq.com; luyunlong@nbu.edu.cn; huangjifu@nbu.edu.cn).

Publisher Copyright:
© 2002-2011 IEEE.

Keywords

Continuous transverse stub (CTS) array
leaky-wave antenna (LWA)
millimeter wave antennas
waveguide arrays

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/LAWP.2021.3096084Licence: None: All rights reserved

youy2021enhanced
This is an accepted manuscript version of an article first published in IEEE Antennas and Wireless Propagation Letters. The final version of record is available at https://doi.org/10.1109/LAWP.2021.3096084
Accepted author manuscript, 0.99 MBLicence: None: All rights reserved

Cite this

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title = "Enhanced pencil-beam scanning CTS leaky-wave antenna based on meander delay line",

abstract = "This letter presents a millimeter-wave (mmW) continuous transverse stub (CTS) leaky-wave antenna (LWA) with pencil-beam broadside radiation, high scanning-rate, and low sidelobe levels (SLLs) characteristics. A parallel-plate waveguide (PPW) meander delay line is employed to control the phase constant of the proposed LWA. By adjusting the length of the transverse electromagnetic TEM-mode PPW delay line, the phase difference between adjacent radiating elements can be altered, achieving flexible control of scanning-rate. Match stubs close to the radiation slots are utilized to suppress the open stopband, which help enlarge the beam scanning range. A linear source generator excited by multiple ports with amplitude tapering is employed to generate the quasi-TEM wave. Combined with additional amplitude tapering among the CTS radiation slots, low SLLs at both principal planes are realized. Experimental results show that the LWA with 12 radiation elements has a scanning range of-68° to 42° over the frequency range of 26-34 GHz (a scanning-rate of 13.75°/GHz) with SLLs lower than 13.5 dB/16.6 dB and a peak gain of over 22.5 dBi. ",

keywords = "Continuous transverse stub (CTS) array, leaky-wave antenna (LWA), millimeter wave antennas, waveguide arrays",

author = "Yang You and Yunlong Lu and Yi Wang and Jun Xu and Jifu Huang and Wei Hong",

note = "Funding Information: Manuscript received June 20, 2021; accepted July 6, 2021. Date of publication July 9, 2021; date of current version September 3, 2021. This work was supported in part by the National Key R&D Program of China under Project 2018YFB1802100; in part by the National Natural Science Foundation of China under Project 61801252, Project U1809203, and Project 61631012; in part by the Zhejiang Natural Science Foundation under Project LY21F010002; in part by the Guangdong R&D Project in Key Areas under Grant 2019B010156004; in part by the Ningbo Natural Science Foundation under Project 202003N4108; and in part by the Fundamental Research Funds for the Provincial Universities of Zhejiang under Grant SJLY2020001. (Corresponding authors: Yunlong Lu; Jifu Huang.) Yang You, Yunlong Lu, and Jifu Huang are with the Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China (e-mail: 897698810@qq.com; luyunlong@nbu.edu.cn; huangjifu@nbu.edu.cn). Publisher Copyright: {\textcopyright} 2002-2011 IEEE.",

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AU - Huang, Jifu

AU - Hong, Wei

N1 - Funding Information: Manuscript received June 20, 2021; accepted July 6, 2021. Date of publication July 9, 2021; date of current version September 3, 2021. This work was supported in part by the National Key R&D Program of China under Project 2018YFB1802100; in part by the National Natural Science Foundation of China under Project 61801252, Project U1809203, and Project 61631012; in part by the Zhejiang Natural Science Foundation under Project LY21F010002; in part by the Guangdong R&D Project in Key Areas under Grant 2019B010156004; in part by the Ningbo Natural Science Foundation under Project 202003N4108; and in part by the Fundamental Research Funds for the Provincial Universities of Zhejiang under Grant SJLY2020001. (Corresponding authors: Yunlong Lu; Jifu Huang.) Yang You, Yunlong Lu, and Jifu Huang are with the Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China (e-mail: 897698810@qq.com; luyunlong@nbu.edu.cn; huangjifu@nbu.edu.cn). Publisher Copyright: © 2002-2011 IEEE.

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N2 - This letter presents a millimeter-wave (mmW) continuous transverse stub (CTS) leaky-wave antenna (LWA) with pencil-beam broadside radiation, high scanning-rate, and low sidelobe levels (SLLs) characteristics. A parallel-plate waveguide (PPW) meander delay line is employed to control the phase constant of the proposed LWA. By adjusting the length of the transverse electromagnetic TEM-mode PPW delay line, the phase difference between adjacent radiating elements can be altered, achieving flexible control of scanning-rate. Match stubs close to the radiation slots are utilized to suppress the open stopband, which help enlarge the beam scanning range. A linear source generator excited by multiple ports with amplitude tapering is employed to generate the quasi-TEM wave. Combined with additional amplitude tapering among the CTS radiation slots, low SLLs at both principal planes are realized. Experimental results show that the LWA with 12 radiation elements has a scanning range of-68° to 42° over the frequency range of 26-34 GHz (a scanning-rate of 13.75°/GHz) with SLLs lower than 13.5 dB/16.6 dB and a peak gain of over 22.5 dBi.

AB - This letter presents a millimeter-wave (mmW) continuous transverse stub (CTS) leaky-wave antenna (LWA) with pencil-beam broadside radiation, high scanning-rate, and low sidelobe levels (SLLs) characteristics. A parallel-plate waveguide (PPW) meander delay line is employed to control the phase constant of the proposed LWA. By adjusting the length of the transverse electromagnetic TEM-mode PPW delay line, the phase difference between adjacent radiating elements can be altered, achieving flexible control of scanning-rate. Match stubs close to the radiation slots are utilized to suppress the open stopband, which help enlarge the beam scanning range. A linear source generator excited by multiple ports with amplitude tapering is employed to generate the quasi-TEM wave. Combined with additional amplitude tapering among the CTS radiation slots, low SLLs at both principal planes are realized. Experimental results show that the LWA with 12 radiation elements has a scanning range of-68° to 42° over the frequency range of 26-34 GHz (a scanning-rate of 13.75°/GHz) with SLLs lower than 13.5 dB/16.6 dB and a peak gain of over 22.5 dBi.

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KW - leaky-wave antenna (LWA)

KW - millimeter wave antennas

KW - waveguide arrays

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Enhanced pencil-beam scanning CTS leaky-wave antenna based on meander delay line

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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