W-band ridge gap waveguide slot array antenna with low sidelobe and high-gain characteristics

Liang Li; Jianhong Chen; Lingwen Kong; Pengyu Zhang; Qihao Lv; Binchao Zhang; Buning Tian; Cheng Jin

doi:10.1002/mop.33135

W-band ridge gap waveguide slot array antenna with low sidelobe and high-gain characteristics

Liang Li, Jianhong Chen^*, Lingwen Kong, Pengyu Zhang, Qihao Lv, Binchao Zhang, Buning Tian, Cheng Jin

^*Corresponding author for this work

School of Cyberspace Science and Technology

Beijing Institute of Technology

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

7 Citations (Scopus)

Abstract

In this letter, a W-band slot array antenna based on ridge gap waveguide (RGW) with low sidelobe and high-gain characteristics has been proposed. It adopts a series and parallel hybrid feeding network to realize low sidelobe levels in E- and H-plane, respectively. The tunable pins and large power ratio dividers are introduced in the distribution network, which improves the phase consistency and brings flexibility to amplitude-tapering. The proposed antenna overcomes the shortcomings of grating lobes caused by quasi-Taylor distribution of conventional slot array with backed cavities. The prototype of a 16 × 18 slot array is fabricated and measured. The measured impedance bandwidth is from 81.2 to 86 GHz, and the peak gain is higher than 29.4 dBi with the sidelobe levels (SLLs) of −19.7 dB and −30 dB on E- and H-plane, respectively.

Original language	English
Pages (from-to)	565-570
Number of pages	6
Journal	Microwave and Optical Technology Letters
Volume	64
Issue number	3
DOIs	https://doi.org/10.1002/mop.33135
Publication status	Published - Mar 2022

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title = "W-band ridge gap waveguide slot array antenna with low sidelobe and high-gain characteristics",

abstract = "In this letter, a W-band slot array antenna based on ridge gap waveguide (RGW) with low sidelobe and high-gain characteristics has been proposed. It adopts a series and parallel hybrid feeding network to realize low sidelobe levels in E- and H-plane, respectively. The tunable pins and large power ratio dividers are introduced in the distribution network, which improves the phase consistency and brings flexibility to amplitude-tapering. The proposed antenna overcomes the shortcomings of grating lobes caused by quasi-Taylor distribution of conventional slot array with backed cavities. The prototype of a 16 × 18 slot array is fabricated and measured. The measured impedance bandwidth is from 81.2 to 86 GHz, and the peak gain is higher than 29.4 dBi with the sidelobe levels (SLLs) of −19.7 dB and −30 dB on E- and H-plane, respectively.",

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AU - Li, Liang

AU - Chen, Jianhong

AU - Kong, Lingwen

AU - Zhang, Pengyu

AU - Lv, Qihao

AU - Zhang, Binchao

AU - Tian, Buning

AU - Jin, Cheng

PY - 2022/3

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N2 - In this letter, a W-band slot array antenna based on ridge gap waveguide (RGW) with low sidelobe and high-gain characteristics has been proposed. It adopts a series and parallel hybrid feeding network to realize low sidelobe levels in E- and H-plane, respectively. The tunable pins and large power ratio dividers are introduced in the distribution network, which improves the phase consistency and brings flexibility to amplitude-tapering. The proposed antenna overcomes the shortcomings of grating lobes caused by quasi-Taylor distribution of conventional slot array with backed cavities. The prototype of a 16 × 18 slot array is fabricated and measured. The measured impedance bandwidth is from 81.2 to 86 GHz, and the peak gain is higher than 29.4 dBi with the sidelobe levels (SLLs) of −19.7 dB and −30 dB on E- and H-plane, respectively.

AB - In this letter, a W-band slot array antenna based on ridge gap waveguide (RGW) with low sidelobe and high-gain characteristics has been proposed. It adopts a series and parallel hybrid feeding network to realize low sidelobe levels in E- and H-plane, respectively. The tunable pins and large power ratio dividers are introduced in the distribution network, which improves the phase consistency and brings flexibility to amplitude-tapering. The proposed antenna overcomes the shortcomings of grating lobes caused by quasi-Taylor distribution of conventional slot array with backed cavities. The prototype of a 16 × 18 slot array is fabricated and measured. The measured impedance bandwidth is from 81.2 to 86 GHz, and the peak gain is higher than 29.4 dBi with the sidelobe levels (SLLs) of −19.7 dB and −30 dB on E- and H-plane, respectively.

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W-band ridge gap waveguide slot array antenna with low sidelobe and high-gain characteristics

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