Enhancement and Optimization of High-Power Ku-Band Metallic Waveguide Radar Array Antenna: Large Efficiency, Wide Band and Low Side Lobe Level.
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| Title: | Enhancement and Optimization of High-Power Ku-Band Metallic Waveguide Radar Array Antenna: Large Efficiency, Wide Band and Low Side Lobe Level. |
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| Authors: | Mohamed, Ibrahim S.1 ibrahim.s.mahmoud@ieee.org, Abdalla, Mahmoud2 |
| Source: | Progress in Electromagnetics Research C. 2025, Vol. 159, p111-123. 13p. |
| Subjects: | Radar antennas, Rectangular waveguides, Waveguides, Antennas (Electronics), Milling (Metalwork), Laser sintering |
| Abstract: | In this paper, the design of a cavity-backed slot antenna array with wideband operation and low sidelobe levels is introduced. A high gain metallic antenna array is designed using rectangular waveguides in both the feeding network and cavity-back slots, where a 16x16 array antenna is built with 8x8 subarrays. The antenna is fabricated using direct laser sintering (DLS) and computer numerical control (CNC) milling technology on both sides of each layer to guarantee no field leakage between antenna layers. For the sake of achieving a wide bandwidth in such array, a 1-to-64-way corporate feeding network is used to distribute the power in the lower feeding layer to excite the coupling apertures beneath the subarrays. The excited power coefficients through the array aperture are tapered using quasi-Taylor synthesis, with an even phase so the modified uneven power waveguide-splitter is designed to taper the field amplitudes within the feeding network till reaching the radiating slots. The array achieved a 14% bandwidth, a gain of more than 31.25 dBi over 1.85 GHz, sidelobe levels higher than 23 dB, and cross-polarization levels better than -40 dB, according to measured data. [ABSTRACT FROM AUTHOR] |
| Copyright of Progress in Electromagnetics Research C is the property of Electromagnetics Academy and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 188008949 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Enhancement and Optimization of High-Power Ku-Band Metallic Waveguide Radar Array Antenna: Large Efficiency, Wide Band and Low Side Lobe Level. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Mohamed%2C+Ibrahim+S%2E%22">Mohamed, Ibrahim S.</searchLink><relatesTo>1</relatesTo><i> ibrahim.s.mahmoud@ieee.org</i><br /><searchLink fieldCode="AR" term="%22Abdalla%2C+Mahmoud%22">Abdalla, Mahmoud</searchLink><relatesTo>2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Progress+in+Electromagnetics+Research+C%22">Progress in Electromagnetics Research C</searchLink>. 2025, Vol. 159, p111-123. 13p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Radar+antennas%22">Radar antennas</searchLink><br /><searchLink fieldCode="DE" term="%22Rectangular+waveguides%22">Rectangular waveguides</searchLink><br /><searchLink fieldCode="DE" term="%22Waveguides%22">Waveguides</searchLink><br /><searchLink fieldCode="DE" term="%22Antennas+%28Electronics%29%22">Antennas (Electronics)</searchLink><br /><searchLink fieldCode="DE" term="%22Milling+%28Metalwork%29%22">Milling (Metalwork)</searchLink><br /><searchLink fieldCode="DE" term="%22Laser+sintering%22">Laser sintering</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In this paper, the design of a cavity-backed slot antenna array with wideband operation and low sidelobe levels is introduced. A high gain metallic antenna array is designed using rectangular waveguides in both the feeding network and cavity-back slots, where a 16x16 array antenna is built with 8x8 subarrays. The antenna is fabricated using direct laser sintering (DLS) and computer numerical control (CNC) milling technology on both sides of each layer to guarantee no field leakage between antenna layers. For the sake of achieving a wide bandwidth in such array, a 1-to-64-way corporate feeding network is used to distribute the power in the lower feeding layer to excite the coupling apertures beneath the subarrays. The excited power coefficients through the array aperture are tapered using quasi-Taylor synthesis, with an even phase so the modified uneven power waveguide-splitter is designed to taper the field amplitudes within the feeding network till reaching the radiating slots. The array achieved a 14% bandwidth, a gain of more than 31.25 dBi over 1.85 GHz, sidelobe levels higher than 23 dB, and cross-polarization levels better than -40 dB, according to measured data. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Progress in Electromagnetics Research C is the property of Electromagnetics Academy and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.2528/PIERC25052311 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 13 StartPage: 111 Subjects: – SubjectFull: Radar antennas Type: general – SubjectFull: Rectangular waveguides Type: general – SubjectFull: Waveguides Type: general – SubjectFull: Antennas (Electronics) Type: general – SubjectFull: Milling (Metalwork) Type: general – SubjectFull: Laser sintering Type: general Titles: – TitleFull: Enhancement and Optimization of High-Power Ku-Band Metallic Waveguide Radar Array Antenna: Large Efficiency, Wide Band and Low Side Lobe Level. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Mohamed, Ibrahim S. – PersonEntity: Name: NameFull: Abdalla, Mahmoud IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: 2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 19378718 Numbering: – Type: volume Value: 159 Titles: – TitleFull: Progress in Electromagnetics Research C Type: main |
| ResultId | 1 |
