a 3D antenna is built and simulated using HFSS software. The optimization of the developed antenna is evaluated by analysing the choice of substrate, thickness of substrate, feeding mechanism and position of the feed. It is observed that the designed antenna showed improvements in antenna parameters such as gain, impedance matching, return loss and bandwidth compared to other research works The peak gain value is found to be 7.132 dB operating at a frequency of 2.5 GHz which is the suitable frequency for microwave imaging across an operating band of 1-4GHz for microwave imaging applications. The bandwidth of the antenna is found to be 300MHz (2.37-2.67 GHz) and achieving a front to back ratio of over 22 dB.