Low Sidelobe Slot Array Antenna Radiating Monopulse Patterns Based on Groove-Transform-Ridge Gap Waveguide
In this paper, a W-band unequal power divider is proposed on the basis of groove-to-ridge gap waveguide, and it is employed to design a low sidelobe level (SLL) slot array antenna with monopulse radiation patterns. The proposed unequal power divider is capable of realizing large power ratio and smal...
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| Format: | Article |
| Language: | English |
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Wiley
2024-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2024/7226780 |
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| author | Liang Li Hongwei Gao Binchao Zhang Cheng Jin |
| author_facet | Liang Li Hongwei Gao Binchao Zhang Cheng Jin |
| author_sort | Liang Li |
| collection | DOAJ |
| description | In this paper, a W-band unequal power divider is proposed on the basis of groove-to-ridge gap waveguide, and it is employed to design a low sidelobe level (SLL) slot array antenna with monopulse radiation patterns. The proposed unequal power divider is capable of realizing large power ratio and small phase difference. In light of this property, three different unequal power dividers with various output power ratios and phase balance are proposed for designing a low SLL array antenna. Furthermore, a compare network with planar Magic-Tee is designed for realizing the monopulse radiation patterns. Then, a 32 × 32 antenna array consisting of five unconnected layers is designed, fabricated, and measured. The measured results indicate that the relative impedance bandwidth of the antenna is about 5.5%. In addition, the realized gain of the sum pattern at 84 GHz is 35.4 dBi, while the null of the difference pattern is less than 38 dB. Furthermore, the SLL of the antenna array is more than −25 dB on both the E- and H-planes within the operating band. |
| format | Article |
| id | doaj-art-89fc121b549e49bb86946db1b1b28a81 |
| institution | Kabale University |
| issn | 1687-5877 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-89fc121b549e49bb86946db1b1b28a812025-02-03T09:56:08ZengWileyInternational Journal of Antennas and Propagation1687-58772024-01-01202410.1155/2024/7226780Low Sidelobe Slot Array Antenna Radiating Monopulse Patterns Based on Groove-Transform-Ridge Gap WaveguideLiang Li0Hongwei Gao1Binchao Zhang2Cheng Jin3School of Cyberspace Science and TechnologySchool of Cyberspace Science and TechnologyDepartment of Electronic Engineering Tsinghua UniversitySchool of Cyberspace Science and TechnologyIn this paper, a W-band unequal power divider is proposed on the basis of groove-to-ridge gap waveguide, and it is employed to design a low sidelobe level (SLL) slot array antenna with monopulse radiation patterns. The proposed unequal power divider is capable of realizing large power ratio and small phase difference. In light of this property, three different unequal power dividers with various output power ratios and phase balance are proposed for designing a low SLL array antenna. Furthermore, a compare network with planar Magic-Tee is designed for realizing the monopulse radiation patterns. Then, a 32 × 32 antenna array consisting of five unconnected layers is designed, fabricated, and measured. The measured results indicate that the relative impedance bandwidth of the antenna is about 5.5%. In addition, the realized gain of the sum pattern at 84 GHz is 35.4 dBi, while the null of the difference pattern is less than 38 dB. Furthermore, the SLL of the antenna array is more than −25 dB on both the E- and H-planes within the operating band.http://dx.doi.org/10.1155/2024/7226780 |
| spellingShingle | Liang Li Hongwei Gao Binchao Zhang Cheng Jin Low Sidelobe Slot Array Antenna Radiating Monopulse Patterns Based on Groove-Transform-Ridge Gap Waveguide International Journal of Antennas and Propagation |
| title | Low Sidelobe Slot Array Antenna Radiating Monopulse Patterns Based on Groove-Transform-Ridge Gap Waveguide |
| title_full | Low Sidelobe Slot Array Antenna Radiating Monopulse Patterns Based on Groove-Transform-Ridge Gap Waveguide |
| title_fullStr | Low Sidelobe Slot Array Antenna Radiating Monopulse Patterns Based on Groove-Transform-Ridge Gap Waveguide |
| title_full_unstemmed | Low Sidelobe Slot Array Antenna Radiating Monopulse Patterns Based on Groove-Transform-Ridge Gap Waveguide |
| title_short | Low Sidelobe Slot Array Antenna Radiating Monopulse Patterns Based on Groove-Transform-Ridge Gap Waveguide |
| title_sort | low sidelobe slot array antenna radiating monopulse patterns based on groove transform ridge gap waveguide |
| url | http://dx.doi.org/10.1155/2024/7226780 |
| work_keys_str_mv | AT liangli lowsidelobeslotarrayantennaradiatingmonopulsepatternsbasedongroovetransformridgegapwaveguide AT hongweigao lowsidelobeslotarrayantennaradiatingmonopulsepatternsbasedongroovetransformridgegapwaveguide AT binchaozhang lowsidelobeslotarrayantennaradiatingmonopulsepatternsbasedongroovetransformridgegapwaveguide AT chengjin lowsidelobeslotarrayantennaradiatingmonopulsepatternsbasedongroovetransformridgegapwaveguide |