Accuracy enhanced beamforming method based on envelope surface extraction for non-contact UWB breast cancer radar

Microwave UWB (Ultra Wideband) radar is promising as a non-invasive medical imaging, such as breast cancer or brain stroke detection due to its non-ionizing feature and deeper penetration ability in low loss medium. While various methods for specifying the breast cancer detection issue, have been developed, most of them require a prerequisite that a shape of breast surface is accurately determined or sensor should be contacted to breast surface. To solve this problem, this paper introduces the surface clutter suppression using the Envelope boundary extraction method and FDTD based signal regeneration. In addition, this method revises an original beam-forming algorithm by compensating the propagation path distorted into breast. The results in numerical simulation show that our proposed method effectively suppresses the surface clutter and.