Studies on radar medical sensors

Ultra-wideband (UWB) radar enables detection and imaging of electrically contrast dielectric and conducting objects inside the human body that can be used to detect tumors, internal wounds and support other medical diagnosis along with mapping different metal/dielectric inclusions to navigate, e.g. a robotic surgical tool. General principles to design such systems and their building blocks are discussed along with implementation challenges. Two biomedical test radar systems are described to illustrate the study

UWB radar imaging system with two-element receiving array antenna

UWB signals can propagate in cluttered environment and opaque media that enables exploring hidden homogeneities through registering and processing backscattered signals. One of such an application is UWB through-wall vision radar (UWBR), Sostanovsky (2004a), Radar Vision (2005). A prototype of low-complexity and low-cost portable UWBR sensor with a small receiving antenna array is presented. Several key implementation issues are discussed including design of antennas and other electromagnetic-related aspects of signal processing algorithms for time-domain focusing and imaging. Simulated and measured radar images demonstrate radar operation to map out a person behind walls