Genetic Optimization of Edge Treatments of Single Offset Reflector Compact Antenna Test Ranges

This paper presents the results of a continuation of the authors prior study into the optimization of compact antenna test ranges (CATR) using evolutionary algorithms. The authors existing algorithm was improved and extended to provide broadband optimization of serrated edge and blended rolled edge (BRE) CATRs before using this refined algorithm to, for the first time, take account of chamber wall illumination in the case of blended rolled edge CATRs which is a recognized deficiency of this approach. This paper presents performance predictions of CATRs that, in addition to being optimized for quiet-zone performance, are also optimized to reduce chamber wall illumination. Performance predictions of example CATR designs are presented, compared and contrasted.