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Imaging of a breast cancer phantom was demonstrated by use of radar-based ultra-wide-band (UWB) complementary metal oxide semiconductor integrated circuits (CMOS) with 16 cross-shaped dome array antennas on a hemispherical breast phantom. The dome antenna array was rotated and the combinations of transmitter and receiver antennas were selected by two CMOS switching matrices. A breast cancer phantom...
Confocal imaging for breast cancer detection by turning an antenna array with CMOS integrated circuits is presented. The detection system consists of 65 nm technology CMOS integrated circuits such as a Gaussian monocycle pulse (GMP) generation circuits, antenna array switching (SW) matrix circuits, equivalent-time sampling circuits, and a 4×4 flat antenna array. By turning the array antennas, reference...
A new single pole eight throw (SP8T) CMOS switching matrix has been developed to replace conventional large mechanical switches, for portable ultra wideband (UWB) breast cancer imaging system. The SP8T switch has an minimum input and output matching bandwidth of 0–17 GHz with an average insertion loss of 3 to 10 dB from 2 to 17 GHz and power consumption of 1.2 mW. By utilizing two of these switching...
A compact 4 4 planar ultrawideband (UWB) antenna array with the total size of 44 52.4 mm was developed for radar-based breast cancer detection system. The center frequency and the bandwidth of the antenna were 6 and 12.5 GHz, respectively. The breast phantom materials were developed to fit the characteristics of the measured human breast tissues. A quasi-three-dimensional confocal...
A study of the Ultra-Wideband (UWB) microwave imaging via the finite difference time domain method (FDTD) with perfectly matched layer absorption boundary condition (PML ABC) for detecting the early malignant tumor in the human breast is presented. In this study, the principle of the microwave imaging is presented in detail. The tumor detection in a two dimensional breast model with dispersive characteristic...
Two-dimensional cross-section image of a dielectric target embedded in the dielectric substrate was reconstructed by confocal imaging method. The Gaussian monocycle pulse with the center frequency of 15 GHz was emitted from bow-tie antenna array which was fabricated on a Si chip, and reflected back to the antenna array. Effect of the number of antennas on the quality of images was investigated. It...
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