Multifrequency Phase Retrieval for Antenna Measurements

Phase retrieval problems in antenna measurements arise when a reference phase cannot be provided to all measurement locations. algorithms require sufficiently many independent samples of the radiated fields successful. Larger amounts data may improve reconstruction information from magnitude-only measurements. We show how knowledge relative phases among spectral components modulated signal at individual locations employed reconstruct between different frequencies. Projection matrices map estimated onto space generated by equivalent under test (AUT) sources In this way, reconstructed solution is not only restricted one frequency but frequencies simultaneously. The proposed method can increase amount even if probes are located far-field (FF) AUT.