PARETO OPTIMAL SYNTHESIS OF THE LINEAR ARRAY GEOMETRY FOR MINIMUM SIDELOBE LEVEL AND NULL CONTROL DURING BEAM SCANNING | ||||
| The International Conference on Electrical Engineering | ||||
| Article 122, Volume 7, 7th International Conference on Electrical Engineering ICEENG 2010, May 2010, Page 1-10 PDF (276.73 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/iceeng.2010.33464 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Fikret Tokan; Filiz Gunes | ||||
| Yıldız Technical University, İstanbul, Turkey. | ||||
| Abstract | ||||
| Abstract: In this work, synthesis of the linear array geometry is put forward as a constrained vector optimization problem whose components are to meet the minimum sidelobe level (SLL) and control of the wide/narrow null placement during beam scanning. Since these synthesis objectives generally conflict with each other, non-dominated solutions are searched using the Non-Dominated Sorting Genetic Algorithm- II (NSGA-II). Then, the Pareto frontiers are obtained using these trade-off solution sets between the maximum SLL, null control and scanning range to provide a view of all design options. Thus, the pattern features resulted from these Pareto frontiers are valid for any chosen main beam direction within its full prescribed beam scanning range. Finally, some typical Pareto optimal radiation patterns of the scanning arrays are synthesized with only perturbating the positions of the array elements and their full electromagnetic wave simulations are also completed to examine the resulted mutual coupling effects between the elements of the arrays. | ||||
| Keywords | ||||
| Linear array; sidelobe suppression; null control; beam scanning; constrained multiobjective optimization; Pareto-optimal solutions | ||||
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