Design and optimization of UWB Vivaldi antenna for brain tumor detection

摘要

An ultra-wideband(UWB) Vivaldi antenna designed to detect brain tumor is presented in this paper. By transforming the conventional two-layer Vivaldi antenna into a three-layer structure, the cross-polarization effect of antenna is sharply reduced. Based on different conductivity of brain tissues, the microwave absorption effect of brain tumors is analyzed in the end, which indicates the broad prospect of microwave imaging system in the field of tumor detection.