Imaging system at 94 GHz using tapered slot antenna elements

Abstract

A 94 GHz Imaging System using linearly tapered slot antennas with integrated beamlead diodes as receptor elements has been developed. The elements have sufficient gain to directly illuminate the sub-reflector of a Cassegrain antenna. The one-foot diameter of the main reflector determines a beam-width of 0.7 degrees for each beam. The measured spacing between adjacent beams in a seven element array is 0.64 degrees. A four element array has also been used for tracking.