Directional and Omnidirectional Sources for an Elliptical Microwave Imaging Setup

Microwave imaging using an elliptical conducting enclosure provides a focused beam, higher signal intensity at the location of the object-under the-test (OUT), and better electrical shielding, as a result, the signal-to-noise ratio (SNR) improves, reducing the necessary number of samples for a given image resolution. In this paper, we investigate the performance of omnidirectional and directional antennas used as sources in elliptical microwave imaging systems.