Design, Analysis and Fabrication of an Inside-Grooved Slotted Waveguide Array Antenna for HPM Applications
In this paper, a slotted waveguide array antenna (SWAA) is designed for S-band high-power microwave (HPM) applications. The single element of the array consists of ten Gaussian distributed slots on the broad wall of the waveguide, integrated with inside grooves. The 4-element SWAA configuration is d...
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/10127970/ |
| _version_ | 1797814546761515008 |
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| author | Asif Mehmood Khan Muhammad M. Ahmed Umair Rafique Suleman Khan |
| author_facet | Asif Mehmood Khan Muhammad M. Ahmed Umair Rafique Suleman Khan |
| author_sort | Asif Mehmood Khan |
| collection | DOAJ |
| description | In this paper, a slotted waveguide array antenna (SWAA) is designed for S-band high-power microwave (HPM) applications. The single element of the array consists of ten Gaussian distributed slots on the broad wall of the waveguide, integrated with inside grooves. The 4-element SWAA configuration is designed to achieve a relatively high gain (24.6 dB) along with highly isolated (−24 dB) radiating elements. The gain enhancement and mutual coupling (MC) reduction is achieved by optimizing inside-grooved regions. An efficient <inline-formula> <tex-math notation="LaTeX">$1\times 4$ </tex-math></inline-formula> power divider (PD) of identical phase and magnitude (−6 dB) at its output ports, is designed to feed the array elements. The radiation performance of SWAA is further improved by developing a dielectric radome. The proposed design is compact having dimensions <inline-formula> <tex-math notation="LaTeX">$8.46\lambda _{0}\times 4.3\lambda _{0}\times 1.47\lambda _{0}$ </tex-math></inline-formula>, and offers return loss (RL) better than −25 dB with side lobe level (SLL) of −15 dB and −20 dB in E and H-plane, respectively. The designed array has 95.78% antenna efficiency over 3.8% measured bandwidth with 63% aperture efficiency. It has been demonstrated that the developed system, because of effective suppression of unwanted surface current, provides ±22° beam scanning without causing a significant reduction in its gain. The technique, without adding any complexity in the system, offered a 7% improvement in the gain when compared with a similar design. |
| first_indexed | 2024-03-13T08:09:15Z |
| format | Article |
| id | doaj.art-45e832d20642416798898399dae14d91 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-03-13T08:09:15Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-45e832d20642416798898399dae14d912023-05-31T23:00:20ZengIEEEIEEE Access2169-35362023-01-0111501165012910.1109/ACCESS.2023.327739010127970Design, Analysis and Fabrication of an Inside-Grooved Slotted Waveguide Array Antenna for HPM ApplicationsAsif Mehmood Khan0Muhammad M. Ahmed1https://orcid.org/0000-0001-6538-2183Umair Rafique2https://orcid.org/0000-0002-6515-7813Suleman Khan3Department of Electrical Engineering, Capital University of Science and Technology, Islamabad, PakistanDepartment of Electrical Engineering, Capital University of Science and Technology, Islamabad, PakistanDepartment of Electrical Engineering, Capital University of Science and Technology, Islamabad, PakistanDepartment of Electrical Engineering, Capital University of Science and Technology, Islamabad, PakistanIn this paper, a slotted waveguide array antenna (SWAA) is designed for S-band high-power microwave (HPM) applications. The single element of the array consists of ten Gaussian distributed slots on the broad wall of the waveguide, integrated with inside grooves. The 4-element SWAA configuration is designed to achieve a relatively high gain (24.6 dB) along with highly isolated (−24 dB) radiating elements. The gain enhancement and mutual coupling (MC) reduction is achieved by optimizing inside-grooved regions. An efficient <inline-formula> <tex-math notation="LaTeX">$1\times 4$ </tex-math></inline-formula> power divider (PD) of identical phase and magnitude (−6 dB) at its output ports, is designed to feed the array elements. The radiation performance of SWAA is further improved by developing a dielectric radome. The proposed design is compact having dimensions <inline-formula> <tex-math notation="LaTeX">$8.46\lambda _{0}\times 4.3\lambda _{0}\times 1.47\lambda _{0}$ </tex-math></inline-formula>, and offers return loss (RL) better than −25 dB with side lobe level (SLL) of −15 dB and −20 dB in E and H-plane, respectively. The designed array has 95.78% antenna efficiency over 3.8% measured bandwidth with 63% aperture efficiency. It has been demonstrated that the developed system, because of effective suppression of unwanted surface current, provides ±22° beam scanning without causing a significant reduction in its gain. The technique, without adding any complexity in the system, offered a 7% improvement in the gain when compared with a similar design.https://ieeexplore.ieee.org/document/10127970/Slotted waveguidehigh power microwavearray antennabeam scanningdielectric radomepower divider |
| spellingShingle | Asif Mehmood Khan Muhammad M. Ahmed Umair Rafique Suleman Khan Design, Analysis and Fabrication of an Inside-Grooved Slotted Waveguide Array Antenna for HPM Applications IEEE Access Slotted waveguide high power microwave array antenna beam scanning dielectric radome power divider |
| title | Design, Analysis and Fabrication of an Inside-Grooved Slotted Waveguide Array Antenna for HPM Applications |
| title_full | Design, Analysis and Fabrication of an Inside-Grooved Slotted Waveguide Array Antenna for HPM Applications |
| title_fullStr | Design, Analysis and Fabrication of an Inside-Grooved Slotted Waveguide Array Antenna for HPM Applications |
| title_full_unstemmed | Design, Analysis and Fabrication of an Inside-Grooved Slotted Waveguide Array Antenna for HPM Applications |
| title_short | Design, Analysis and Fabrication of an Inside-Grooved Slotted Waveguide Array Antenna for HPM Applications |
| title_sort | design analysis and fabrication of an inside grooved slotted waveguide array antenna for hpm applications |
| topic | Slotted waveguide high power microwave array antenna beam scanning dielectric radome power divider |
| url | https://ieeexplore.ieee.org/document/10127970/ |
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