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A new image reconstruction algorithm for early breast cancer detection using ultra-wideband microwave signals is proposed. In this algorithm, the backscattered electric and magnetic flelds are measured and combined in a novel way; the direction of power ∞ow with respect to a given focal point is used to localize tumors. Signiflcant improvement in signal-to-mean raito (SMR) and signal- to-clutter ratio (SCR) are achieved when driving signals consist of waves with multiple polarizations. Numerical results demonstrate nearly 5.5dB improvement of SMR and SCR over the traditional Confocal Microwave Imaging method when a single 8mm breast tumor is present.

MULTI-POLARIZED MICROWAVE POWER IMAGING ALGORITHM FOR EARLY BREAST CANCER DETECTION