UWB microwave radar imaging for detection and discrimination of benign and malignant breast tumors using circularly polarized antennas

摘要

This paper presents an Ultra Wide Band radar imaging system for detection and discrimination of benign and malignant breast tumors using circularly polarized antennas. The system was tested using a breast phantom with similar dielectric proprieties of a breast. Two tumors were placed inside the breast phantom one malignant and another benign. Furthermore a comparison between linear polarization and circular polarization was carried out. We observed that with circular polarization it was possible to distinguish between the malignant and benign tumors due to its higher sensitivity to small dielectric contrast difference as well as its higher resolution capability compared to linear polarizations.