Abstract
This paper presents the design of a microwave breast imaging system using metamaterial (MTM) inspired high gain antenna. The system consists of 9 antenna arrays placing in a hemispherical order. The antenna is a modified version of a traditional Vivaldi antenna, which is further loaded with a single negative metamaterial unit cell to increase the gain and radiation performance. The antenna has an overall bandwidth of 2-10.45 GHz with a maximum gain of 8.2dBi within the bandwidth. With the directional radiation pattern, the antenna exhibits good performance in the imaging setup. The setup is tested in the CST simulation environment with phantom having a tumor inside, placed in the center. After getting the scattered signals from the phantom the data is post-processed and the image is reconstructed. The system can detect the presence of unwanted cells inside the healthy tissue.