Design of a Low-Cost, Low-Sidelobe-Level, Differential-Fed SIW Slot Array Antenna with Zero Beam Squint
This paper presents a low-cost, low-sidelobe-level, differential-fed, substrate-integrated waveguide (SIW)-based slot array antenna with zero beam squint. The antenna consists of two identical six-way unequal power dividers (PDs) and a 6 × 16 slot array and is realized on a single-layer substrate. T...
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| Format: | Article |
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MDPI AG
2022-10-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/21/10826 |
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| author | Thai Van Trinh Son Trinh-Van Kang-Yoon Lee Youngoo Yang Keum Cheol Hwang |
| author_facet | Thai Van Trinh Son Trinh-Van Kang-Yoon Lee Youngoo Yang Keum Cheol Hwang |
| author_sort | Thai Van Trinh |
| collection | DOAJ |
| description | This paper presents a low-cost, low-sidelobe-level, differential-fed, substrate-integrated waveguide (SIW)-based slot array antenna with zero beam squint. The antenna consists of two identical six-way unequal power dividers (PDs) and a 6 × 16 slot array and is realized on a single-layer substrate. The six-way unequal PD provides tapered amplitude and in-phase excitation for six SIWs, and each of them has 16 radiating slots. The 1 × 16 linear slot array on each SIW is excited using a differential feed to avoid undesired beam squinting across its operating band. A two-way hybrid waveguide (WG)-to-SIW <i>E</i>-plane PD is developed to provide equal amplitude and out-of-phase excitation for two six-way unequal power dividers. Moreover, metallic decoupling walls are implemented between two adjacent linear slot arrays to reduce <i>E</i>-plane external mutual coupling. An antenna prototype is fabricated and experimentally verified. The fabricated antenna shows that the measured −10 dB reflection bandwidth is 7.15% (9.57–10.28 GHz), with the achieved gain ranging from 20.30 to 21.92 dBi. A stable boresight beam is observed over the entire operating band. Furthermore, at the designed frequency of 10 GHz, peak SLLs of −29.1 dB and −29.4 dB are achieved in the <i>E</i>- and <i>H</i>-plane, respectively. |
| first_indexed | 2024-03-09T19:18:07Z |
| format | Article |
| id | doaj.art-638ae8a006fa4306baa7a5db09e8f7a6 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T19:18:07Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-638ae8a006fa4306baa7a5db09e8f7a62023-11-24T03:33:28ZengMDPI AGApplied Sciences2076-34172022-10-0112211082610.3390/app122110826Design of a Low-Cost, Low-Sidelobe-Level, Differential-Fed SIW Slot Array Antenna with Zero Beam SquintThai Van Trinh0Son Trinh-Van1Kang-Yoon Lee2Youngoo Yang3Keum Cheol Hwang4Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 440-746, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 440-746, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 440-746, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 440-746, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 440-746, KoreaThis paper presents a low-cost, low-sidelobe-level, differential-fed, substrate-integrated waveguide (SIW)-based slot array antenna with zero beam squint. The antenna consists of two identical six-way unequal power dividers (PDs) and a 6 × 16 slot array and is realized on a single-layer substrate. The six-way unequal PD provides tapered amplitude and in-phase excitation for six SIWs, and each of them has 16 radiating slots. The 1 × 16 linear slot array on each SIW is excited using a differential feed to avoid undesired beam squinting across its operating band. A two-way hybrid waveguide (WG)-to-SIW <i>E</i>-plane PD is developed to provide equal amplitude and out-of-phase excitation for two six-way unequal power dividers. Moreover, metallic decoupling walls are implemented between two adjacent linear slot arrays to reduce <i>E</i>-plane external mutual coupling. An antenna prototype is fabricated and experimentally verified. The fabricated antenna shows that the measured −10 dB reflection bandwidth is 7.15% (9.57–10.28 GHz), with the achieved gain ranging from 20.30 to 21.92 dBi. A stable boresight beam is observed over the entire operating band. Furthermore, at the designed frequency of 10 GHz, peak SLLs of −29.1 dB and −29.4 dB are achieved in the <i>E</i>- and <i>H</i>-plane, respectively.https://www.mdpi.com/2076-3417/12/21/10826differential feedlow side-lobe arrayslot arraysubstrate integrated waveguide (SIW) |
| spellingShingle | Thai Van Trinh Son Trinh-Van Kang-Yoon Lee Youngoo Yang Keum Cheol Hwang Design of a Low-Cost, Low-Sidelobe-Level, Differential-Fed SIW Slot Array Antenna with Zero Beam Squint Applied Sciences differential feed low side-lobe array slot array substrate integrated waveguide (SIW) |
| title | Design of a Low-Cost, Low-Sidelobe-Level, Differential-Fed SIW Slot Array Antenna with Zero Beam Squint |
| title_full | Design of a Low-Cost, Low-Sidelobe-Level, Differential-Fed SIW Slot Array Antenna with Zero Beam Squint |
| title_fullStr | Design of a Low-Cost, Low-Sidelobe-Level, Differential-Fed SIW Slot Array Antenna with Zero Beam Squint |
| title_full_unstemmed | Design of a Low-Cost, Low-Sidelobe-Level, Differential-Fed SIW Slot Array Antenna with Zero Beam Squint |
| title_short | Design of a Low-Cost, Low-Sidelobe-Level, Differential-Fed SIW Slot Array Antenna with Zero Beam Squint |
| title_sort | design of a low cost low sidelobe level differential fed siw slot array antenna with zero beam squint |
| topic | differential feed low side-lobe array slot array substrate integrated waveguide (SIW) |
| url | https://www.mdpi.com/2076-3417/12/21/10826 |
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