Performance evaluation of phase retrieval method based on amplitude-only near-field data

Retrieval of phase information based on near-field amplitude-only measurement data has been of significant research interest in the antenna society which aims to determine the far-field radiation pattern of the antenna under test. Most work is about presenting new algorithms together with some measurement examples to demonstrate the feasibilities of the proposed algorithm. In this paper, performance of the recently proposed phase angle gradient method under different configurations is studied via numerical examples.