Multipixel metamaterial lens imaging system

Abstract

An experimental 5-pixel microwave imaging system, operating at 3 GHz, is demonstrated. It employs a planar negative-refractive index lens. A single pixel comprises a pair of small-loop antennas (receive and transmit), that are each loaded by dielectric resonators to enhance sensitivity. The receive loop is on the image plane. The object is scanned across the object plane. Plotting the transmission between the two loops versus object scan position, an image can be constructed from each pixel. A single image can be constructed by combining all pixel data with a reduced object scan range.