Antenna pattern retrieval from measurements in non-ideal anechoic chamber

The study focuses on the measurement procedure and the algorithm for retrieval of the true radiation pattern of the antenna from data measured in non-ideal environments, which are insufficient distance from the source antenna and scattering from the walls of the chamber. Unlike the previous works, a concept of converging cluster of plane waves used not only to approximate the primary illuminating field, but also to account for waves reflected from the measuring chamber walls. In addition, expansion in the number of basis functions instead of a set of points represents the sought-for antenna pattern. This leads to bettering the reconstruction algorithm stability. The results of modeling various tasks illustrate how interesting can be relief of fields brought forth by clusters of waves inside and outside the test zone.