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## Array Pattern Nulling by Phase and Position Perturbations with the Use of a Modified Tabu Search Algorithm

### Citations

679 | Tabu search—Part I
- Glover
- 1989
(Show Context)
Citation Context ...ect to the main beam [3,10,18]. The asymmetrical nulls can easily be obtained with a higher nulling performance by controlling both the phase and position. In this work, a tabu search algorithm (TSA) =-=[24,25]-=-, which is one of the latest meta-heuristic optimization techniques, is used to steer the single, multiple and broad nulls to the directions of interference by perturbing both the phases and the posit... |

387 | Tabu search — part II
- Glover
- 1990
(Show Context)
Citation Context ...ect to the main beam [3,10,18]. The asymmetrical nulls can easily be obtained with a higher nulling performance by controlling both the phase and position. In this work, a tabu search algorithm (TSA) =-=[24,25]-=-, which is one of the latest meta-heuristic optimization techniques, is used to steer the single, multiple and broad nulls to the directions of interference by perturbing both the phases and the posit... |

68 | Genetic algorithms: concepts and applications”, - Man, Tang, et al. - 1996 |

30 | Regazzoni, “Synthesis of unequally spaced arrays by simulated annealing - Murino, Trucco, et al. - 1996 |

24 | Phase-only adaptive nulling with a genetic algoritlun,” - Haupt - 1997 |

18 | Synthesis of antenna arrays using genetic algorithms”, - Marcano, Duran - 2000 |

17 |
Methods for null control and their effects on the radiation pattern,”
- Steyskal, Shore, et al.
- 1986
(Show Context)
Citation Context ...while the nulls are formed in the directions of undesired sources. Null steering with the complex weights is the most efficient method because it has greater degrees of freedom for the solution space =-=[3,7,16-18]-=-. However, it is also the most expensive control method considering the cost of both a phase shifter and a variable attenuator for each array element [3]. The methods of amplitude-only control utilize... |

16 |
Simple method for pattern nulling by phase perturbation’,
- Steyskal
- 1983
(Show Context)
Citation Context ...ytical method. By assuming that the phase perturbations are small, the nulling equations can be linearized, but it is impossible to place nulls at a symmetrical location with respect to the main beam =-=[2]-=-. In order to steer the nulls symmetrically with respect to the main beam, methods based on nonlinear optimization techniques [8, 10] have been proposed; however, the resultant patterns of these metho... |

15 | Null steering in phased arrays by controlling the elements positions’, - Ismail, Dawoud - 1991 |

14 |
Null steering of linear antenna arrays using a modified tabu search algorithm,”
- Guney, Akdagli
- 2001
(Show Context)
Citation Context ...while the nulls are formed in the directions of undesired sources. Null steering with the complex weights is the most efficient method because it has greater degrees of freedom for the solution space =-=[3,7,16-18]-=-. However, it is also the most expensive control method considering the cost of both a phase shifter and a variable attenuator for each array element [3]. The methods of amplitude-only control utilize... |

11 |
Array pattern nulling by element position perturbations using a genetic algorithm
- Tennant, Dawoud, et al.
- 1994
(Show Context)
Citation Context ...cal optimization techniques, the techniques based on meta-heuristic search such as genetic and simulated annealing algorithms have received much attention for solving array pattern synthesis problems =-=[6,10,15,18,26-33]-=-. A tabu search algorithm was developed to be an effective and efficient scheme for combinatorial optimization that combines a hill-climbing search strategy based on a set of elementary moves and heur... |

11 |
Amplitude and phase adaptive nulling with a genetic algorithm’,
- Haupt
- 2000
(Show Context)
Citation Context ...nulls can be achieved by phase-only control. However, in this case, there is an unavoidable sidelobe level increase in the direction symmetrical to the nulling direction with respect to the main beam =-=[3,10,18]-=-. The asymmetrical nulls can easily be obtained with a higher nulling performance by controlling both the phase and position. In this work, a tabu search algorithm (TSA) [24,25], which is one of the l... |

9 | Linear antenna array pattern synthesis with prescribed broad nulls - Er - 1990 |

8 |
Array pattern nulling by phase and position perturbations with the use of the genetic algorithm
- Liao, Chu
- 1997
(Show Context)
Citation Context ...to place nulls at a symmetrical location with respect to the main beam [2]. In order to steer the nulls symmetrically with respect to the main beam, methods based on nonlinear optimization techniques =-=[8, 10]-=- have been proposed; however, the resultant patterns of these methods have considerable pattern distortion because the phase perturbations used are large. Another phase-only synthesizing approach to s... |

8 | Amethod for the optimal pattern synthesis of linear arrays with prescribed nulls - Shpak - 1996 |

8 | Effective Patch Radius Expression Obtained Using a Genetic Algorithm for the Resonant Frequency - Akdagli, Guney - 2000 |

7 |
Array pattern synthesis with null steering using genetic algorithms by controlling only the current 6
- Liao, Chu
- 1999
(Show Context)
Citation Context ...cal optimization techniques, the techniques based on meta-heuristic search such as genetic and simulated annealing algorithms have received much attention for solving array pattern synthesis problems =-=[6,10,15,18,26-33]-=-. A tabu search algorithm was developed to be an effective and efficient scheme for combinatorial optimization that combines a hill-climbing search strategy based on a set of elementary moves and heur... |

7 |
Nulling at symmetric pattern location with phaseonly weight control
- Shore
- 1984
(Show Context)
Citation Context ...to place nulls at a symmetrical location with respect to the main beam [2]. In order to steer the nulls symmetrically with respect to the main beam, methods based on nonlinear optimization techniques =-=[8, 10]-=- have been proposed; however, the resultant patterns of these methods have considerable pattern distortion because the phase perturbations used are large. Another phase-only synthesizing approach to s... |

6 | Synthesis of Antenna Pattern With Prescribed Nulls - Steyskal - 1982 |

6 |
A New Effective Side Length Expression Obtained Using a Modified Tabu Search Algorithm for the Resonant Frequency of a Triangular Microstrip Antenna
- Karaboğa, Güney, et al.
- 1998
(Show Context)
Citation Context ...ng algorithms. The TSA used in this study is the modified tabu search algorithm (MTSA) proposed by Karaboğa 450 AKDAĞLI, GÜNEY: Array Pattern Nulling by Phase and Position Perturbations..., et al. =-=[38]-=-. The classical TSA [24, 25] uses a solution vector consisting of a string of bits. Thus, in solving a numerical problem, the transformation from binary to real numbers should be used. However, the MT... |

5 | A common tabu search algorithm for the global optimization of engineering problems,” - Machado, Yang, et al. - 2001 |

4 | Simultaneous nulling in sum and difference pattern by amplitude control - Vu - 1986 |

4 | Null synthesis by phase control for antenna array’, - Vescovo - 2000 |

4 | Wide-band nulling performance versus number of pattern constraints for an array antenna - Steyskal - 1983 |

4 | Genetic Algorithm Procedure for Linear Array Failure - Rodriguez, Ares, et al. - 2000 |

4 | Linear array pattern synthesis optimizing array element excitations using the simulated annealing technique,” Microwave Opt - Rodriguez, Ares, et al. - 1999 |

3 | Null Steering in Scanned Linear Arrays by Element Position Perturbations - Dawoud - 1995 |

2 |
Null steering with arbitrary phase perturbations using dual phase shifters’,
- Ismail, Mismar
- 1999
(Show Context)
Citation Context ...nsiderable pattern distortion because the phase perturbations used are large. Another phase-only synthesizing approach to steer array nulls in symmetrical directions is presented by Ismail and Mismar =-=[11]-=-; but it uses a dual phase shifter for each array element, and hence the number of phase shifters to be used is 4N for an array with 2N elements. The phase-only null synthesizing is attractive since i... |

2 | Optimization with Controlled Null Placement in Antenna Array Pattern Synthesis - Ng, Cheah, et al. - 1985 |

2 | Method of Null Steering in Phased Array Antenna Systems - Stuckman, Hill - 1990 |

2 | Linear Antenna Arrays with Broad Nulls with Applications to Adaptive Arrays - Prasad - 1979 |

2 | Null Steering in Planar Arrays by Controlling Only Current Amplitudes Using Genetic Algorithm - Liao, Chu - 1997 |

2 | Phase-Only Null Fixing in Equispaced Linear Antenna Arrays Using Roots Searching - Lozano, Ares - 1999 |

2 | Simulated Annealing Coupled with the Tabu Search Method for Continuum Optimization in Electromagnetics - Vasconcelos, Krähenbühl, et al. - 1996 |

2 | Tabu Search Metaheuristics for Global Optimization of Electromagnetic Problems - Fanni, Manunza, et al. - 1998 |

2 | Tabu Search Metaheuristics for Electromagnetic Problems Optimization in Continuous Domains - Fanni, Manunza, et al. - 1999 |

1 |
Null Steering by Real-Weight Control—A Method of Decoupling the Weights
- Ibrahim
- 1991
(Show Context)
Citation Context ...etry about the center of the array, the number of attenuators required and the computational time are halved. Amplitude-only control is also easy to implement and less sensitive to quantization error =-=[5]-=-. However, patterns with satisfactory null 449 Turk J Elec Engin, VOL.10, NO.3, 2002 depth, sidelobe level and dynamic range ratio cannot be obtained by amplitude-only control. The problem for excitat... |

1 | Tilt Angle and Side-Lobe Level Control of Microwave Array Antennas - Mognon, Artuzi, et al. - 2002 |

1 | A simple formula obtained using tabu search algorithm for the radiation efficiency of a resonant rectangular microstrip antenna - Karaboga, Guney - 1999 |