Elliptical Antenna Array Synthesis using Evolutionary Computing Tools

Chakravarthy, V. V. S. S. S.; Chowdary, P. S. R.; Dib, Nihad; Anguera, Jaume

doi:10.1007/s13369-021-05852-9

Cited by 11 publications

(19 citation statements)

References 17 publications

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“…Using the method of induced currents [8] to calculate the diffraction factor, we write down the asymptotic estimates of the polarization components of the grating electric field in the far zone of the carrier surface [12][13][14][15][16].…”

Section: Mathematical Model and Calculation Methodsmentioning

confidence: 99%

“…(6) (7) where (8) -local diffraction functions characterizing the change in the field distribution of the n-th vibrator, n=1,..., N, due to scattering on the carrier surface (9) ), , , ( z j r…”

Section: Mathematical Model and Calculation Methodsmentioning

confidence: 99%

“…are the azimuthal and axial components of the diffraction factor of the cylinder [19][20][21][22] for the nth array element, n=1,..., N, l0 is the length of the electric dipole, The coefficients and included in (12) and ( 13) are calculated according to the rules [8] (…”

Section: Mathematical Model and Calculation Methodsmentioning

confidence: 99%

“…Interrelations between the parameters of antenna structures and the objects on which they are located, with indicators of spatial-frequency selectivity of transmission (reception) of radio signals are established based on the W results of electrodynamic analysis based on solving the problems of excitation of receiving-radiating structures by fields (currents) of external sources [8,9]. When constructing electrodynamic models of antenna systems, carriers are represented by bodies in a simple form with minimal deviations of the coordinate surfaces from the real ones [6].…”

Section: Introductionmentioning

confidence: 99%

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General Approaches to Solving Problems of Analysis and Synthesis of Directional Properties of Antenna Arrays

Islamov

Humbataliyev

2022

AEM

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The work carried out the calculation and synthesis of antenna arrays used in radio-electronic complexes on unmanned aerial vehicles. The analytical model is designed to find asymptotic estimates of the polarization components of the electric field of the grating in the far zone of the carrier surface; the results obtained with its use are the initial data for constructing a technique for the numerical solution of a boundary value problem for a grating on a carrier surface in the CST MWS electrodynamic simulation environment. The synthesis of gratings with the maximum achievable coefficient of directional action is carried out with the control of radiation patterns at a given set of angles. A two-mirror antenna system has been calculated. It is shown that with an increase in the number of re-reflections taken into account, the convergence of the result for the calculated characteristics of the antenna is observed. To test the proposed method, the same antenna was calculated using the integral equation method. The comparison showed a high degree of agreement between the results obtained by two different methods. The results of the simulation based on a software algorithm designed to quantify the input matching at the input of a multichannel frequency-scanning antenna array power divider are presented. It was found that when performing wide-angle scanning in a relative frequency band of more than a few percent, the disadvantage of the known method for eliminating the normal effect is a sharp deterioration in matching in the lower and upper frequencies of the operating range. A new method is proposed based on an automated iterative process of optimizing the divider geometry, which makes it possible to obtain an acceptable match over the entire operating frequency band. The feasibility of switching from a serial power divider construction scheme to a series-parallel scheme is analyzed for wide-angle scanning in a relative frequency band of about 5%.

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Section: Mathematical Model and Calculation Methodsmentioning

confidence: 99%

Section: Mathematical Model and Calculation Methodsmentioning

confidence: 99%

Section: Mathematical Model and Calculation Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

General Approaches to Solving Problems of Analysis and Synthesis of Directional Properties of Antenna Arrays

Islamov

Humbataliyev

2022

AEM

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“…In recent years, many evolutionary algorithms and nature-based metaheuristics have been studied to overcome the above-mentioned problems with traditional numerical techniques. Multi-objective evolutionary computing techniques are known to solve problems with multiple objectives without regard to the initial solution [7].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a Radiating Elements for Side Lobe Reduction Using a Hybrid Beamforming Technique Based on Non-Linear Programming and Stochastic Optimization

Brahimi¹,

İnç²,

Ahmad³

et al. 2022

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In this article, an algorithm with global constraints known as hybrid non-linear programming with particle swarm enhancement is available for improving the circular antenna array (CAA) radiation characteristics. The suggested method combines the optimization of excitation currents with the array's element spacing to create the correct beam patterns. In this context, adaptive particle optimization (APSO) and basic particle swarm optimization (BPSO) algorithms are applied with the previous method to the (8,12,20) elements to tune the array's amplitude and positioning to achieve a radiation profile with reduced SLL. The simulated results show that the recommended strategy provides the greatest decrease in side lobe levels and directivity.

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Current State of Analysis and Optimal Synthesis of Microwave Waveguide Systems of Complex Structure

Islamov

2023

Radio Engineering and Telecommunications Waveguide Systems in the Microwave Range

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Elliptical Antenna Array Synthesis using Evolutionary Computing Tools

Cited by 11 publications

References 17 publications

General Approaches to Solving Problems of Analysis and Synthesis of Directional Properties of Antenna Arrays

General Approaches to Solving Problems of Analysis and Synthesis of Directional Properties of Antenna Arrays

Synthesis of a Radiating Elements for Side Lobe Reduction Using a Hybrid Beamforming Technique Based on Non-Linear Programming and Stochastic Optimization

Current State of Analysis and Optimal Synthesis of Microwave Waveguide Systems of Complex Structure

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