Design of wire bow-tie antenna for near field imaging using Genetic Algorithms

The potentially broad application area in engineering design using genetic algorithm (GA) has been widely adopted by many researchers due to its high consistency and accuracy. Presented here is the initial design of a wideband non-dispersive wire bow-tie antenna using GA for breast cancer detection. Similar to the antenna used in a ground penetrating radar (GPR), the ultimate goal of this design is to achieve minimal late-time ringing but at higher frequencies (operate from 4 to 8 GHz) which is desire to penetrate human tissue for near field imaging. An optimum result with the half antenna length of 38.6 mm and a total flare angle of 70deg is acquired. Resistively loading method was also implemented to reduce minimal ringing cause by the antenna internal reflections.