Synthesis of phased cylindrical ARC antennas arrays

5 p.International audienceThis paper describes a new approach to synthesize cylindrical antenna arrays controlled by the phase excitation, to synthesize directive lobe and multilobe patterns with steered zero. The proposed method is based on iterative minimization of a function that incorporates constraints imposed in each direction. An 8-element cylindrical antenna has been simulated and tested for various types of beam configurations

Bi-Static Time Domain Study for Microwave Breast Imaging

International audienceIn this paper a BAVA (Balanced Antipodal Vivaldi Antenna) antenna is designed and optimized to be used in direct breast contact to operate in the 3.1-10.6 GHz band. A bi-static study in the time domain is proposed to investigate the presence of the tumor. The tumor was first inserted in the fat tissues at 4 mm from the skin and then inserted deeper at 2 cm in the glandular tissues to validate the used approach. Finally a microwave breast image was constructed based on the recovered time domain signals for both cases