Microwave imaging via adaptive beamforming methods for breast cancer detection

Ultra-wideband (UWB) Microwave imaging a promising breast cancer detection technology which exploits the significant contrast in dielectric properties between normal breast tissue and tumor. Previously, data-independent methods, such as delay-and-sum (DAS) and space-time (ST) beamforming, have been used for microwave imaging. However, the low resolution and the poor interference suppression capability associated with the data,independent methods restrict their use ill practice, especially when the noise, is high and the backscatttered signals are. weak. In this paper; we. develop two data-adaptive methods for microwave imaging. which are referred to as the robust weio-hted Capon beaniforming (M/NTCB) method and the amplitude and phase estimation (APES) method. Due counterparts in terms of improved resolution and reduced sidelobe levels.