CIRCULAR, HEXAGONAL AND OCTAGONAL ARRAY GEOMETRIES FOR SMART ANTENNA SYSTEMS USING HYBRID CFO-HC ALGORITHM | ||||
| JES. Journal of Engineering Sciences | ||||
| Article 9, Volume 40, No 6, November and December 2012, Page 1715-1732 PDF (887.64 K) | ||||
| Document Type: Research Paper | ||||
| DOI: 10.21608/jesaun.2012.114613 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| A. M. Montaser1; K. R. Mahmoud2; Adel B. Abdel-Rahman3; H. A. Elmikati4 | ||||
| 1Sohag University, Sohag, Egypt. | ||||
| 2Helwan University, Helwan, Egypt. | ||||
| 3South Valley University, Qena, Egypt. | ||||
| 4Senior Member IEEE; Mansoura University, Mansoura 35516,Egypt. | ||||
| Abstract | ||||
| In this paper, circular, hexagonal and Octagonal array geometries for smart antenna applications are compared. Uniform circular (UCA), uniform hexagonal (UHA) and uniform Octagonal arrays (UOA) with 24 half-wave dipole elements are examined. An efficient global hybrid optimization method is proposed combining the Central Force Optimization (CFO) as a global optimizer and Hillclimbing (HC) algorithm as a local optimizer. After the final global iteration, a local optimization can be followed to further improve the solution obtained from the CFO. The CFO-HC algorithm is used to optimize the complex excitations, amplitudes and phases, of the adaptive arrays elements for beamforming, the CFO-HC algorithm was implemented using MATLAB-software and linked to the CST simulator to simulate the adaptive arrays. | ||||
| Keywords | ||||
| Uniform circular arrays (UCA); Uniform hexagonal arrays (UHA); Uniform octagonal arrays (UOA); Hybrid CFO-HC algorithm | ||||
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