Millimeter-wave range for the quick evaluation of large reflector antennas with complex feeds

An automated millimeter-wave antenna range capable of measuring primary-feed structure patterns and transferring this data to a mainframe computer for secondary pattern computation is described. Its applicability to the rapid evaluation of complex feed structures as used in a Cassegrain antenna is illustrated. An example of a reflector antenna analysis is compared to a measured pattern.Supported by USAF Space Division, Contract F04701-84-C-0085.