A novel hybrid IWO/WDO algorithm for nulling pattern synthesis of uniformly spaced linear and non-uniform circular array antenna

Mahto, Santosh Kumar; Choubey, Arvind

doi:10.1016/j.aeue.2016.02.013

Cited by 28 publications

(10 citation statements)

References 20 publications

(67 reference statements)

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“…We note here that a null depth level, deeper than -60 dB, is achieved with a minimum DRR (4.1), over the concerned region Δθ, while the null depth level using BA is -56.4 dB. For IWO/WDO method [37], the resulted pattern has a wide deep null but it presents a DRR of 7.5 and a SLL of -26 dB. In the last example, we synthesize an array of 2N=20 elements with the desired null at the peak of the second sidelobe of the Chebyshev pattern, which occurs at 94°.…”

Section: Numerical Resultsmentioning

confidence: 69%

A Dynamic Invasive Weeds Optimization Applied to Null Control of Linear Antenna Arrays with Constrained DRR

Kenane¹,

Bakhti²,

Bentoumi³

et al. 2021

AEM

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In the present work, a dynamic stochastic method is proposed and used for the synthesis of uniform linear antenna arrays. The proposed method combines the classical invasive weeds (IWO) and the mutation process, which makes it robust, simple and shows flexibility to be adapted. The dynamic IWO applies the mutation process in the calculation of standard deviation during the spatial dispersal process of produced seeds while keeping the mean at the parent plants. In the mutation process, if special conditions were achieved, the standard deviation would be re-initialized. This proposed method tries to achieve an optimal array pattern by acting on the relative amplitude excitation of each element in the linear array for an optimal inter-element spacing. The optimal array pattern has deep or broad nulls in some directions of interferences with low sidelobes level. The objective of the synthesis is to get amplitude excitations with low dynamic range ratio (DRR), which facilitates the design of beamforming feed network. To illustrate the robustness of the proposed method, numerical examples are presented and compared with the obtained results using bees algorithm (BA), bacterial foraging algorithm (BFA), real genetic algorithm (RGA), and the corresponding reference array pattern for each example.

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Section: Numerical Resultsmentioning

confidence: 69%

A Dynamic Invasive Weeds Optimization Applied to Null Control of Linear Antenna Arrays with Constrained DRR

Kenane¹,

Bakhti²,

Bentoumi³

et al. 2021

AEM

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show abstract

“…4 Optimization algorithm IWO and DE are intelligent algorithms which have been used in various kinds of optimization problems [21][22][23][24]. In order to improve the synthesis results, invasive weed optimization and differential evolution algorithm are combined for parallel computation.…”

Section: Optimization Of Element Positionsmentioning

confidence: 99%

“…The element positions are optimized by differential invasive weed optimization (DIWO), and low PSLLs of the radiation patterns are obtained. IWO has been widely used in the design of antennas [17,21,22]. Usually, IWO has better optimization results than the other optimization methods in the final error level.…”

Section: Introductionmentioning

confidence: 99%

Position-only synthesis of uniformly excited elliptical antenna arrays with minimum element spacing constraint

Guo

Jing

Dong

et al. 2019

J Wireless Com Network

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Pattern synthesis of non-uniform elliptical antenna arrays is presented in this paper. Only the element positions of the antenna arrays are optimized by the combination of differential evolution (DE) and invasive weed optimization (IWO) to reduce the peak side lobe level (PSLL) of the radiation pattern. In order to avoid the overlap of the array elements, the minimum spacing of the adjacent elements is constrained. Also, the beam width of the radiation pattern can be constrained effectively. Three elliptical antenna arrays that have 8, 12, and 20 elements are investigated. The synthesis results show that the introduced method can present a good side lobe reduction for the radiation pattern. Compared with other optimization methods, the method proposed in this paper can obtain better performance.

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“…A modified differential evolution algorithm is proposed for introducing asymmetric nulls of 28 element linear antenna array [5]. In [6]investigation into pattern nulling of uniform linear array and non-uniform circular array has been carried out by applying novel IWO/DWO algorithm. Positioning of single nulls as well as broad nulls in the interference direction was explored and compared with various benchmark functions.…”

Section: Introductionmentioning

confidence: 99%

Array Pattern Synthesis of Multiband Hexagonal Fractal Antenna Array for Reduced Sidelobe and Deep Null Control using Modified Invasive Weed Optimization Algorithm

2020

IJETER

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Design of antenna arrays involving fractal concepts have resulted in the evolution of new fractal antenna array geometries that exhibit multiband characteristics. In this paper array pattern synthesis of hexagonal fractal antenna array (HFAA) is proposed for imposing symmetric nulls in the interference directions while maintaining a reduced side lobe level (SLL) using a modified invasive weed optimization algorithm (MIWO). The desired characteristics are obtained by optimizing the current amplitude coefficients of HFAA. Further multiband characteristics of the fractal array are investigated. The results indicate the improved performance of MIWO when compared to conventional invasive weed optimization algorithm (IWO) in achieving the desired radiation characteristics. Also optimized HFAA demonstrates multiband behavior in achieving similar radiation characteristics.

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A novel hybrid IWO/WDO algorithm for nulling pattern synthesis of uniformly spaced linear and non-uniform circular array antenna

Cited by 28 publications

References 20 publications

A Dynamic Invasive Weeds Optimization Applied to Null Control of Linear Antenna Arrays with Constrained DRR

A Dynamic Invasive Weeds Optimization Applied to Null Control of Linear Antenna Arrays with Constrained DRR

Position-only synthesis of uniformly excited elliptical antenna arrays with minimum element spacing constraint

Array Pattern Synthesis of Multiband Hexagonal Fractal Antenna Array for Reduced Sidelobe and Deep Null Control using Modified Invasive Weed Optimization Algorithm

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