Application of Micro Genetic Algorithm to Optimization of Time-Domain Ultra-Wide Band Antenna Array

Qin, Yanming; Liao, Cheng; Wei, Tao

doi:10.1109/icmmt.2007.381381

Cited by 10 publications

(5 citation statements)

References 5 publications

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“…The BW and SLL of all time-domain pattern descriptors, in comparison to those of the array configurations reported in [5] and [7], have been decreased.…”

Section: Array Optimizationmentioning

confidence: 75%

“…The effect of number of elements on the array impulse response was analyzed by Sorgel et al [6]. Qin et al applied micro genetic algorithms (MGA) to optimize a UWB array of TEM horns that can yield minimum BW and SLL [7]. Others looked for constant conventional frequency-domain gain, sidelobe level, and BW over a broad frequency bandwidth [8].…”

Section: Introductionmentioning

confidence: 99%

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Time-Domain Design of UWB Vivaldi Antenna Array Using Multiobjective Particle Swarm Optimization

Chamaani

Abrishamian

Mirtaheri

2010

Antennas Wirel. Propag. Lett.

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A method to obtain optimum tradeoffs (Pareto front) between sidelobe level (SLL) and beamwidth (BW) in time domain for ultrawideband (UWB) antenna arrays is presented. Multiobjective particle swarm optimization (MOPSO) is used to deal with these two conflicting objectives. In the optimization process, mutual coupling effects between elements are not considered. However, the multiple solutions obtained from MOPSO enable the designer to consider the mutual coupling effect as an additional constraint. Each element of the array is an antipodal Vivaldi antenna. The optimization template is applied for three different time-domain pattern descriptors. In comparison to arrays with the same number of elements reported in literature, the Pareto fronts obtained in this study provide lower BW and SLL. A four-element sample from resultant Pareto fronts was simulated by using CST Microwave Studio software. This array shows a 13.7-17.2 dBi gain over the whole frequency band from 3-11 GHz, 7.2 BW, and 12 dB SLL for energy pattern.Index Terms-Antipodal Vivaldi antenna, array antenna, multiobjective particle swarm optimization (MOPSO), ultrawideband (UWB) antenna.

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“…The BW and SLL of all time-domain pattern descriptors, in comparison to those of the array configurations reported in [5] and [7], have been decreased.…”

Section: Array Optimizationmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Time-Domain Design of UWB Vivaldi Antenna Array Using Multiobjective Particle Swarm Optimization

Chamaani

Abrishamian

Mirtaheri

2010

Antennas Wirel. Propag. Lett.

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“…In this case, time-domain (TD) or pulsed antenna arrays have recently been studied by regarding their advantages of low side lobes and high resolution for the modern applications such as radar, remote sensing, and communications [3]. Previous works in the literature include studies mainly for the TD linear arrays, exploiting its features of fixed and scanning beam of patterns [4][5][6][7][8][9][10][11][12][13]. The research in [14] addresses a study of performance of large two-dimensional time-domain (TDTD) antenna arrays for a very narrow-fixed pattern in imaging applications.…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Time-Domain Antenna Arrays for Optimum Steerable Energy Pattern with Low Side Lobes

Reyna

Panduro

Romero

et al. 2014

International Journal of Antennas and Propagation

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This document presents the synthesis of different two-dimensional time-domain antenna arrays for steerable energy patterns with side lobe levels. The research is focused on the uniform and nonuniform distributions of true-time exciting delays and positions of antenna elements. The uniform square array, random array, uniform concentric ring array, and rotated nonuniform concentric ring array geometries are particularly studied. These geometries are synthesized by using the well-known sequential quadratic programming. The synthesis regards the optimal true-time exciting delays and optimal positions of pulsed antenna elements. The results show the capabilities of the different antenna arrays to steer the beam in their energy pattern in time domain and how their performance is in frequency domain after the synthesis in time domain.

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“…Such a separation condition is more likely in a wideband array where element size, mutual coupling and cost may limit the minimum separation in the array. Different optimisation techniques including simulation annealing (SA) [3,4], a genetic algorithm (GA) [5] and a particle swarm optimiser (PSO) [6,7] have been used to find an optimum excitation and array geometry for wideband applications.…”

mentioning

confidence: 99%

Wideband scanning small linear arrays in presence of mutual coupling

Khan

Brown

2010

Electron. Lett.

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This reported work concerns the wideband performance of small linear uniformly spaced arrays in the presence of mutual coupling when used in beam scanning applications. Optimum pattern bandwidth performance is obtained by implementing a particle swarm optimiser with Schelkunoff's unit circle approach. Performance comparison has been made with a conventional Taylor distribution.Introduction: Wideband antenna arrays have a large number of applications in various scenarios including mobile communications, radio astronomy and radar systems. The wideband performance is often required with other features such as low sidelobe level (SLL), null(s) in desired directions, beam steering or a defined beam shape. For low SLL, conventional techniques include Taylor's current distribution [1] and Elliot's root matching approach [2]. These can be used for narrowband performance but are not appropriate where the separation of the elements is such that grating lobes cannot be avoided. Such a separation condition is more likely in a wideband array where element size, mutual coupling and cost may limit the minimum separation in the array. Different optimisation techniques including simulation annealing (SA) [3, 4], a genetic algorithm (GA) [5] and a particle swarm optimiser (PSO) [6,7] have been used to find an optimum excitation and array geometry for wideband applications.In [3] and [4] the authors determined the complex weights and the separation between the elements for the optimised wideband performance for a large (N ¼ 50) linear array. A meta-PSO based solution for a defined pattern shape over two different frequency bands is presented in [6]. Optimum complex excitation has also been determined for the wideband performance of a 20 element isotropic array by Elkamchouchi and Wagih [7] using the PSO approach. Simultaneous optimisation of weights and separation is proposed by Bevelacqua and Balanis [8]. No mutual coupling scenario was considered in these studies.This Letter investigates the improvement in the wideband performance of small arrays in the presence of mutual coupling for scanning applications.

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Application of Micro Genetic Algorithm to Optimization of Time-Domain Ultra-Wide Band Antenna Array

Cited by 10 publications

References 5 publications

Time-Domain Design of UWB Vivaldi Antenna Array Using Multiobjective Particle Swarm Optimization

Time-Domain Design of UWB Vivaldi Antenna Array Using Multiobjective Particle Swarm Optimization

Two-Dimensional Time-Domain Antenna Arrays for Optimum Steerable Energy Pattern with Low Side Lobes

Wideband scanning small linear arrays in presence of mutual coupling

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