Modified Multi-Objective Particle Swarm Optimization for Electromagnetic Absorber Design

Chamaani, Somayyeh; Mirtaheri, Seyed Abdullah; Teshnehlab, Mohammad; Shooredeli, Mahdi Aliyari; Seydi, Vahid

doi:10.2528/pier07101702

Cited by 54 publications

(26 citation statements)

References 13 publications

(11 reference statements)

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“…Table 7. Model parameters obtained after minimization of RCS of a conducting cylinder (a = 50 mm) with one layer coating made of dispersive metamaterial in the frequency band [1][2][3][4][5][6][7][8][9][10] GHz for TE polarization. Table 8 and drawn in Fig.…”

Section: Numerical Examplesmentioning

confidence: 99%

“…Minimization or even maximization of radar cross section (RCS) [1][2][3] of objects is of particular interest, which can be achieved by different techniques such as application of Radar Absorbing Materials (RAM) [4,6]. Other applications of RAM have been developed, such as anechoic chambers, antenna designs with low side lobes, protection from electromagnetic interference in high speed circuits, etc.…”

Section: Introductionmentioning

confidence: 99%

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COMBINATION OF MLS , GA & CG FOR THE REDUCTION OF RCS OF MULTILAYERED CYLINDRICAL STRUCTURES COMPOSED OF DISPERSIVE METAMATERIALS

Oraizi¹,

Abdolali²

2008

PIER B

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Abstract-In this paper the electromagnetic wave scattering from multilayered cylindrical structures is studied for a normally incident plane wave with linear (TE or TM), circular and elliptical polarizations.The cylindrical layers may be composed of any combination of dispersive common materials and metamaterials. The addition theorems for the cylindrical waves are used for the EM wave analysis. The objective of this study is to decrease or increase the Radar Cross Section (RCS) in an ultra wide band width. The optimization is based on the Method of Least Squares (MLS), employing a novel combination of the Genetic Algorithm (GA) and Conjugate Gradient (CG), where the global search for the minimization point is performed by GA and the local search is done by CG, which greatly speeds up the search algorithm. The behaviors of various combinations of common materials and metamaterials for reduction of RCS are studied. Furthermore, the procedures for selection of correct signs for metamaterial parameters, namely ε, µ, k and η are presented.

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Section: Numerical Examplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

COMBINATION OF MLS , GA & CG FOR THE REDUCTION OF RCS OF MULTILAYERED CYLINDRICAL STRUCTURES COMPOSED OF DISPERSIVE METAMATERIALS

Oraizi¹,

Abdolali²

2008

PIER B

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“…New modified PSO-based schemes are continuously emerging in the literature in an attempt to improve the overall performance of classical schemes in one direction: to speed up convergence preserving diversity and increasing exploration abilities. Different modified versions of the classical PSO algorithm can be found applied to array synthesis [10,11], patch antenna design [12] or planar multilayered absorbers design [13]. In fact, there are some schemes that mix up heuristic GA and PSO optimization algorithms [14,15].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Planar Arrays Using a Modified Particle Swarm Optimization Algorithm by Introducing a Selection Operator and Elitism

Diego¹,

López²,

Basterrechea³

2009

PIER

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Abstract-A modified particle swarm optimization (PSO) algorithm applied to planar array synthesis considering complex weights and directive element patterns is presented in this paper. The modern heuristic classical PSO scheme with asynchronous updates of the swarm and a global topology has been modified by introducing tournament selection, one of the most effective selection strategies performing in genetic algorithms the equivalent role to natural selection, and elitism. The modified PSO proposed combines the abilities of the classical PSO to explore the search space and the pressure exerted by the selection operator to speed up convergence. Regarding the optimization problem, the synthesis of the feeds for rectangular planar arrays consisting of microstrip patches or subarrays of microstrip patches is considered. Results comparing the performance and limitations of classical and modified PSO-based schemes are included considering both test functions and planar array complex synthesis to best meet certain far-field radiation pattern restrictions given in terms of 3D-masks. Finally, representative synthesis results for sector antennas for worldwide interoperability for microwave access (WiMAX) applications are also included and discussed.

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“…One of the powerful algorithms that can be employed for optimization of the multidimensional problems of this kind, especially in the domain of computational electromagnetism, is the particle swarm optimization (PSO) method [37][38][39][40][41][42][43][44][45][46][47]. Recently, some different PC structures have been optimized by using the PSO algorithm to evaluate a fitness function [48,49].…”

Section: Introductionmentioning

confidence: 99%

Directional Emission from Photonic Crystal Waveguide Output by Terminating with CROW and Employing the PSO Algorithm

Bozorgi

Granpayeh

2011

Journal of the Optical Society of Korea

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We have designed two photonic crystal waveguide (PCW) structures with output focused beams in order to achieve more coupling between photonic devices and decrease the mismatch losses in photonic integrated circuits. PCW with coupled resonator optical waveguide (CROW) termination has been optimized by both one dimensional (1D) and seven dimensional (7D) particle swarm optimization (PSO) algorithms by evaluating the fitness function by the finite difference time domain (FDTD) method. The 1D and 7D-optimizations caused the factors of 2.79 and 3.875 improvements in intensity of the main lobe compared to the non-optimized structure, whereas the FWHM in 7D-optimized structure was increased, unlike the 1D case. It has also been shown that the increment of focusing causes decrement of the bandwidth.

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Modified Multi-Objective Particle Swarm Optimization for Electromagnetic Absorber Design

Cited by 54 publications

References 13 publications

COMBINATION OF MLS , GA & CG FOR THE REDUCTION OF RCS OF MULTILAYERED CYLINDRICAL STRUCTURES COMPOSED OF DISPERSIVE METAMATERIALS

COMBINATION OF MLS , GA & CG FOR THE REDUCTION OF RCS OF MULTILAYERED CYLINDRICAL STRUCTURES COMPOSED OF DISPERSIVE METAMATERIALS

Synthesis of Planar Arrays Using a Modified Particle Swarm Optimization Algorithm by Introducing a Selection Operator and Elitism

Directional Emission from Photonic Crystal Waveguide Output by Terminating with CROW and Employing the PSO Algorithm

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