Development of Flexible Microwave Antennas for Breast Cancer Imaging System

To diagnose the breast tumor(BT) Microwave Imaging (MWI) are used as an alternative of X-ray Mammography. MWI is non-ionizing, non-invasive technique which use back scattering rays for reconstruction of images of targeted BT. Antennas are designed in frequency of 2GHz. Three substrate material like FR4, polyester and pyralux polyimide (PP) was analyzed in three different designs of patch antennas like Rectangular Patch antenna, Bow-Tie and Split Rectangular Patch Antennas. S11 and electric field (EF) are analyzed to determine the performance of antenna in air and in the presence of 3D Breast phantom (BP) (healthy and diseased). On the bases of dielectric properties (DP) of cancerous tissues, embedded tumors are analyzed in BP which is designed in HFSS. Split patch antenna is best among all for PP and polyester substrate. It’s compact in size, high in gain and directivity. BY using the array of antennas, the performance of the system improved due to mutual coupling of antennas placed at 1800 apart of 80mm distance. Flexible antennas were also analyzed in the presence of 3D BP which also simulated using HFSS with DP of healthy and diseased BT. The magnitude of EF shows that the effectiveness of antennas in the presence of breast phantom.