The Design of Wire Antennas Using Genetic Algorithm Based On Sensitivity Analysis

-The problem of sensitivity in the wire antennas designed by genetic algorithm (GA) causes the results to be unfeasible to be constructed successfully. This problem is due to great variation of final objective (cost function) when the antenna has some physical variations. Moreover, these GA results are not reliable because of the fact that, usually cost functions of the well-done results show high sensitivity to segmentation changes in computer analysis and so they can’t be used for high precision optimization designs. These challenges motivate us to consider these specifications in the designs. In this paper the above problems in Yagi-Uda antennas as an example of wire antennas are investigated and we suggest some convenient notifications on the algorithm of our problem.. Key-Words: Real coded genetic algorithm, Wire antenna, sensitivity, Yagi-Yuda.