Offset Reflector with Horn Feed Array, Used as an Experimental Sensor for Radiometric Measurements

摘要

A sensor consisting of a single offset reflector antenna with five beams for radiometric measurements with multiple receivers is presented. The design procedure and the arrangement of the feeds is described. A procedure for the exact adjustment of the reflector in relation to the feeds is outlined. The horn antenna was positioned for linear polarization so as to place the maxima of the beams in a straight line. The sidelobe distances of all beams are practically equal, the half-width values differ only slightly. Calculated and measured radiation diagrams show good accordance.