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The concept of an Ultra Wideband (UWB) Monopulse Microwave Radar System for detection and location of breast cancer is described. The system uses a two-element Tapered Slot Antenna (TSA) array accompanied by a UWB 180° hybrid which scans the breast. When the breast tissue features symmetry with respect to the array axis and the hybrid enables the 180° out phase feeding operation, the array automatically...
This paper has reported a microwave imaging system employing a monopulse radar technique to eliminate adverse effects of strong reflection from the air-imaged body interface. This technique is realized using a newly constructed ultra wideband twoelement probe antenna fed by a 180° hybrid. The validity of the proposed system has been verified via full-wave EM simulations. Using the signal data obtained...
In this paper, we apply an ultra wideband radar technique to detect and locate small cylindrical objects in a dielectric cylindrical body emulating the woman's breast. We propose a new image reconstruction algorithm which exploits the monopulse radar principle involving a 2-element array antenna. Using the difference of two signals received by the elements of this array, the part of the signal due...
A theoretical and experimental study of a novel image reconstruction algorithm for an Ultra Wideband (UWB) Microwave Imaging System aiming at detecting and locating small targets in a homogenous circular cylindrical dielectric body is presented. The system uses a double circular scan in which the second scan is achieved after rotating by a small angle the antenna sub-system or the imaged body. The...
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