Balanced antipodal Vivaldi antenna array for microwave tomography

This paper presents simulation studies for an array comprised of twelve balanced antipodal Vivaldi antennas for microwave tomography in the presence of a simple numerical breast phantom. This type of antennas bas been proposed previously in UWB breast imaging, but their use is a microwave tomographic setup is studied for the first time. The coupling effect of array elements and the electric field patterns are investigated with and without the phantom in the frequency range of interest between 0.5 and 5 GHz.