Optimized VAA Based Synthesis of Elliptical Cylindrical Antenna Array for SLL Reduction and Beam Thinning Using Minimum Number of Elements
In this paper, new virtual antenna array (VAA) based synthesis techniques are introduced for side lobe level (SLL) reduction, beam thinning, and number of elements minimization for elliptical cylindrical antenna arrays (ECAA) of radar systems. Thereby, significant improvements in the array gain and...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2021-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9389711/ |
| _version_ | 1818741168746266624 |
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| author | Heba Soliman Dawood Heba Ali El-Khobby Mustafa Mahmoud Abd Elnaby Amr Hussein Hussein |
| author_facet | Heba Soliman Dawood Heba Ali El-Khobby Mustafa Mahmoud Abd Elnaby Amr Hussein Hussein |
| author_sort | Heba Soliman Dawood |
| collection | DOAJ |
| description | In this paper, new virtual antenna array (VAA) based synthesis techniques are introduced for side lobe level (SLL) reduction, beam thinning, and number of elements minimization for elliptical cylindrical antenna arrays (ECAA) of radar systems. Thereby, significant improvements in the array gain and directivity are achieved, which enhance the detection range and angular resolution of the radar. Furthermore, the overall implementation cost of the system is highly reduced by saving the number of elements and the corresponding RF chains and simplifying the feeding network. Firstly, the proposed technique decomposes the single transmit/receive ECAA into a separate transmit linear antenna array (LAA) and receive elliptical antenna array (EAA). Secondly, the number of antenna elements, element spacing, and excitations of the created LAA and EAA are optimized using particle swarm optimization (PSO) to produce efficient beamformed patterns. Finally, the Kronker product of the optimized LAA and EAA patterns is performed to form the optimized virtual ECAA (V-ECAA) pattern. We also introduced both the uniform feeding based V-ECAA technique and the non-uniform feeding based V-ECAA synthesis technique for more flexibility and better productivity in antenna arrays design. The simulation results revealed that the uniform feeding based V-ECAA provides an identical pattern to that of the traditional uniform feeding ECAA while saves the number of elements by 66.6%. While in the case of non-uniform feeding based V-ECAA, it provides much lower SLL and narrower HPBW than those of the ECAA while saving the number of elements by 63.8%. Furthermore, the HB is applied to provide additional beam thinning and SLL reduction of the proposed non-uniform V-ECAA that is denoted as (HBV-ECAA). The possibility of practical validations of the synthesized V-ECAAs is verified using the computer simulation technology (CST) microwave studio package, which gives users an integrated design environment and achieves realizable and robust designs. |
| first_indexed | 2024-12-18T01:52:20Z |
| format | Article |
| id | doaj.art-8698b5af63374b3fb85937b8b1f55396 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-18T01:52:20Z |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-8698b5af63374b3fb85937b8b1f553962022-12-21T21:25:00ZengIEEEIEEE Access2169-35362021-01-019509495096010.1109/ACCESS.2021.30697959389711Optimized VAA Based Synthesis of Elliptical Cylindrical Antenna Array for SLL Reduction and Beam Thinning Using Minimum Number of ElementsHeba Soliman Dawood0https://orcid.org/0000-0002-6901-9186Heba Ali El-Khobby1Mustafa Mahmoud Abd Elnaby2Amr Hussein Hussein3https://orcid.org/0000-0002-9685-2528Department of Electronics and Electrical Communications Engineering, Faculty of Engineering, Tanta University, Tanta, EgyptDepartment of Electronics and Electrical Communications Engineering, Faculty of Engineering, Tanta University, Tanta, EgyptDepartment of Electronics and Electrical Communications Engineering, Faculty of Engineering, Tanta University, Tanta, EgyptDepartment of Electronics and Electrical Communications Engineering, Faculty of Engineering, Tanta University, Tanta, EgyptIn this paper, new virtual antenna array (VAA) based synthesis techniques are introduced for side lobe level (SLL) reduction, beam thinning, and number of elements minimization for elliptical cylindrical antenna arrays (ECAA) of radar systems. Thereby, significant improvements in the array gain and directivity are achieved, which enhance the detection range and angular resolution of the radar. Furthermore, the overall implementation cost of the system is highly reduced by saving the number of elements and the corresponding RF chains and simplifying the feeding network. Firstly, the proposed technique decomposes the single transmit/receive ECAA into a separate transmit linear antenna array (LAA) and receive elliptical antenna array (EAA). Secondly, the number of antenna elements, element spacing, and excitations of the created LAA and EAA are optimized using particle swarm optimization (PSO) to produce efficient beamformed patterns. Finally, the Kronker product of the optimized LAA and EAA patterns is performed to form the optimized virtual ECAA (V-ECAA) pattern. We also introduced both the uniform feeding based V-ECAA technique and the non-uniform feeding based V-ECAA synthesis technique for more flexibility and better productivity in antenna arrays design. The simulation results revealed that the uniform feeding based V-ECAA provides an identical pattern to that of the traditional uniform feeding ECAA while saves the number of elements by 66.6%. While in the case of non-uniform feeding based V-ECAA, it provides much lower SLL and narrower HPBW than those of the ECAA while saving the number of elements by 63.8%. Furthermore, the HB is applied to provide additional beam thinning and SLL reduction of the proposed non-uniform V-ECAA that is denoted as (HBV-ECAA). The possibility of practical validations of the synthesized V-ECAAs is verified using the computer simulation technology (CST) microwave studio package, which gives users an integrated design environment and achieves realizable and robust designs.https://ieeexplore.ieee.org/document/9389711/Elliptical cylindrical antenna array (ECAA)hyper beamforming (HB)virtual antenna array (VAA)particle swarm optimization (PSO)radarside lobe level (SLL) |
| spellingShingle | Heba Soliman Dawood Heba Ali El-Khobby Mustafa Mahmoud Abd Elnaby Amr Hussein Hussein Optimized VAA Based Synthesis of Elliptical Cylindrical Antenna Array for SLL Reduction and Beam Thinning Using Minimum Number of Elements IEEE Access Elliptical cylindrical antenna array (ECAA) hyper beamforming (HB) virtual antenna array (VAA) particle swarm optimization (PSO) radar side lobe level (SLL) |
| title | Optimized VAA Based Synthesis of Elliptical Cylindrical Antenna Array for SLL Reduction and Beam Thinning Using Minimum Number of Elements |
| title_full | Optimized VAA Based Synthesis of Elliptical Cylindrical Antenna Array for SLL Reduction and Beam Thinning Using Minimum Number of Elements |
| title_fullStr | Optimized VAA Based Synthesis of Elliptical Cylindrical Antenna Array for SLL Reduction and Beam Thinning Using Minimum Number of Elements |
| title_full_unstemmed | Optimized VAA Based Synthesis of Elliptical Cylindrical Antenna Array for SLL Reduction and Beam Thinning Using Minimum Number of Elements |
| title_short | Optimized VAA Based Synthesis of Elliptical Cylindrical Antenna Array for SLL Reduction and Beam Thinning Using Minimum Number of Elements |
| title_sort | optimized vaa based synthesis of elliptical cylindrical antenna array for sll reduction and beam thinning using minimum number of elements |
| topic | Elliptical cylindrical antenna array (ECAA) hyper beamforming (HB) virtual antenna array (VAA) particle swarm optimization (PSO) radar side lobe level (SLL) |
| url | https://ieeexplore.ieee.org/document/9389711/ |
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