Automatic Correction of Nonanechoic Antenna Measurements Using Complex Morlet Wavelets

Real-world performance of antennas is normally tested in anechoic chambers (ACs). Alternatively, experimental validation can be performed in nonanechoic environments and refined in the course of postprocessing. Unfortunately, the existing methods are difficult to setup and prone to failure. In this letter, a wavelet-based framework for correction of nonanechoic antenna measurements has been proposed. The method involves automatic centering and adjusting of the wavelet w.r.t. a fraction of the signal that corresponds to line-of-sight transmission within the system under test. The performance of the method has been verified using two compact antennas and a total of 15 experiments. Benchmarks against the state-of-the-art approaches have also been performed.