Microwave breast phantom measurements with a cavity-backed Vivaldi antenna

The authors design a cavity-backed Vivaldi antenna (CBVA) for microwave breast measurements. The design criteria for the antenna is shaped by the requirements of the free-space measurement scenario where the receiving and the transmitting antennas are rotated by a mechanical scanner. Later, the authors have performed various breast phantom measurements with the CBVA to reveal its feasibility for microwave tomography.