Spread Spectrum Time Domain Reflectometry tests on Microwave Breast Phantom

Spread spectrum time domain reflectometry (SSTDR) is proposed to replace the VNA or UWB pulsed systems and switches in a microwave imaging system. These tests evaluate an SSTDR system (Keysight N7081A) from 2-4 GHz. 16 ultrawideband (UWB) antennas were placed in contact with the breast phantom. The McGill breast phantom is a hemispherical carbon-based phantom with the electrical properties of fat. A cylindrical hole allows for the insertion of a plug with fat properties or fat+tumor properties. These were both measured and provided in the attached data set. Tests were repeated with a second phantom with skin-mimicking material on the outside of the phantom. This data was used to create Fig. 8,9,10 in the associated manuscript.