IR-UWB-CMOS circuits for breast cancer detection

Impulse radio ultra-wide-band complementary metal oxide semiconductor (IR-UWB-CMOS) integrated circuits have been developed for breast cancer detection. The circuits consist of Gaussian monocycle pulse (GMP) generator and transmitter, low noise amplifier (LNA), equivalent time sampling circuits and analog to digital converter. The GMP with the center frequency of 6 GHz was digitally generated and transmitted by use of off-chip UWB antennas. The received signals were digitized by equivalent time sampling technique and were transformed to the two-dimensional pixels by confocal imaging algorism.