An Innovative Strategy for Synthesis of Uniformly Weighted Circular Aperture Antenna Array Based on the Weighting Density Method

Jiang, Yi; Shu, Zhang

doi:10.1109/lawp.2013.2264833

Cited by 19 publications

(22 citation statements)

References 9 publications

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“…2(b) is the layout of the 170 elements that formed the optimum array. Compared to the results of WD method [3] that applied to the same array aperture, this strategy has improved 3.99dB in the PSL, 1.01dB in the directivity, and has a little increment in the 3-dB beamwidth. Moreover, the total element number has been decreased from 247 to 170.…”

Section: Numerical Resultsmentioning

confidence: 85%

“…to the QWDD of an appropriate reference array by adjusting the ring radii and the element number of each ring, the UWCRA can achieve a low PSL according to literature [3]. Towards this end, let ˆn rr = , and assume …”

Section: A Qwdd Of a Reference Arraymentioning

confidence: 99%

“…Recently, the synthesis of UWCRAs with large array apertures for achieving a narrow beamwidth and a low PSL has aroused great interest. The synthesized UWCRAs can greatly reduce the PSL with less than half elements of the FCRA and keep almost the same beamwidth, which can significantly compact the power feeding network and reduce the weight and cost of the antenna systems [3]. Besides, the mutual coupling effects can be reduced due to the enlarged distance between two adjacent array elements [4].…”

Section: Introductionmentioning

confidence: 99%

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A Hybrid Strategy Based on Weighting Density and Genetic Algorithm for the Synthesis of Uniformly Weighted Concentric Ring Arrays

Jiang

Zhang

Guo

et al. 2017

Antennas Wirel. Propag. Lett.

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A hybrid strategy based on weighting density and genetic algorithm for the synthesis of uniformly weighted concentric ring arrays (UWCRAs) aiming at minimizing the peak-sidelobe level (PSL) is proposed. In the strategy, an integer genetic algorithm is used to search the ring radii, meanwhile, the element number of each ring is directly calculated from the quantized weighting density distribution (QWDD) constraint of a reference array. UWCRAs with a minimum element spacing constraint of half-wavelength and wide range array apertures from small diameters to the large ones are synthesized with this strategy. Numerical experiments validate the effectiveness of the proposed strategy, showing improvements with respect to the previous results.

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Section: Numerical Resultsmentioning

confidence: 85%

Section: A Qwdd Of a Reference Arraymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Hybrid Strategy Based on Weighting Density and Genetic Algorithm for the Synthesis of Uniformly Weighted Concentric Ring Arrays

Jiang

Zhang

Guo

et al. 2017

Antennas Wirel. Propag. Lett.

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“…Assume a 50 element linear array with a fixed aperture of 5 m and a working wavelength of 0.06 m. The main radiation direction of the pattern synthesis is set as 10º, and the width of the main lobe zero power points is set as 3º. Under these conditions, the equivalent number of elements with d = λ / 2 is 167, thus the sparse ratio is 70% according to (11).…”

Section: Simulations Of the Grating Lobes Suppressionmentioning

confidence: 99%

“…Jiang et al presented an improved integer genetic algorithm (IIGA) to meet the needs of sparse array design with thousands of array elements [10]. The modified algorithm had a PSLL of 0.75 dB improvement compared to WD method [11], while the array elements were reduced by 6.85%. However, this approach was time-consuming for large arrays.…”

Section: Introductionmentioning

confidence: 99%

Robust Hybrid Algorithm of PSO and SOCP for Grating Lobe Suppression and against Array Manifold Mismatch

Li¹,

Liu²,

Sun³

et al. 2018

RADIOENGINEERING

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Based on Particle Swarm Optimization (PSO)and Second-Order Cone Programming (SOCP) algorithm, this paper proposes a hybrid optimization method to suppress the grating lobes of sparse arrays and improve the robustness of array layout. With the peak side-lobe level (PSLL) as the objective function, the paper adopts the particle swarm optimization as a global optimization algorithm to optimize the elements' positions, the convex optimization as a local optimization algorithm to optimize the elements' weights. The effectiveness of the grating lobes suppression (as low as -32.13 dB) by this method is illustrated through its application to the sparse linear array when the actual steering vector is known. To enhance the robustness of the optimized array, a rebuilt robust convex optimization model is adopted in the optimization of both array excitations and layout. When the array manifold mismatch error is 1 cm, the PSLL by the robust algorithm can be compressed to -27 dB, compared to that of -24 dB by the ordinary optimization. Results of a set of representative numerical experiments show that the algorithm proposed in this paper can obtain a more robust array layout and matched elements' weight coefficients to avoid the huge degradation of the array pattern performance in the presence of array manifold mismatch errors. The good performance of pattern synthesis demonstrates the effectiveness of the proposed robust algorithm.

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Meta-heuristic optimization algorithms for simultaneous optimization of sidelobe level and directivity of uniformly excited concentric ring array antennas

Dutta

Mahanti

2019

Int. J. Microw. Wireless Technol.

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This paper proposes the novel application of three meta-heuristic optimization algorithms namely crow search algorithm, moth flame optimization, and symbiotic organism search algorithm for the synthesis of uniformly excited multiple concentric ring array antennas. The objective of this work is to minimize the sidelobe level (SLL) and maximize the peak directivity simultaneously. Three different cases are demonstrated separately with various constraints such as optimal inter-element spacing and/or optimal ring radii. Comparative study of the algorithms using common parameters such as SLL, directivity, first null beam width, best cost, and run time has been reported. Investigation results prove the superiority of case 3 over other cases in terms of directivity and SLL. This work demonstrates the potential of these algorithms.

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An Innovative Strategy for Synthesis of Uniformly Weighted Circular Aperture Antenna Array Based on the Weighting Density Method

Cited by 19 publications

References 9 publications

A Hybrid Strategy Based on Weighting Density and Genetic Algorithm for the Synthesis of Uniformly Weighted Concentric Ring Arrays

A Hybrid Strategy Based on Weighting Density and Genetic Algorithm for the Synthesis of Uniformly Weighted Concentric Ring Arrays

Robust Hybrid Algorithm of PSO and SOCP for Grating Lobe Suppression and against Array Manifold Mismatch

Meta-heuristic optimization algorithms for simultaneous optimization of sidelobe level and directivity of uniformly excited concentric ring array antennas

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