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 MATLABsoftware
and linked to the CST simulator to simulate the adaptive arrays.