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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2011-05-13
Comparison Between Two Phase-Retrieval Methods for Electromagnetic Source Modeling
By
Markus Johansson,

    Mr. Markus Johansson

    Chalmers University of Technology

    Sweden

    Homepage

Andreas Fhager,

    Dr. Andreas Fhager

    Department of Signal and System

    Chalmers University of Technology

    Sweden

    Homepage

Hoi-Shun Lui,

    Dr. Hoi-Shun Lui

    Department of Signals and Systems

    Chalmers University of Technology

    Sweden

    Homepage

Mikael Persson

    Dr. Mikael Persson

    Department of Signals and Systems

    Chalmers University of Technology

    Sweden

    Homepage

Progress In Electromagnetics Research B, Vol. 30, 239-253, 2011
doi:10.2528/PIERB11020507 | Google Scholar

Abstract
Phase-retrieval from measured phaseless field data is of interest for various applications including electromagnetic dosimetry, electromagnetic compatibility investigations, near-field to far-field transformations and antenna diagnostics. In this study two phaseretrieval methods are compared. The first method, the adjoint field method, employs a gradient-based optimization algorithm based on the adjoint fields. The second method, the phase angle gradient method, uses an optimization algorithm based on the phase angle gradients of a functional. The methods are tested with numerical test cases and the phase angle gradient method is found to retrieve the phase with the best accuracy. Moreover it gives results that agree well with correct phase.
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Citation
Markus Johansson, Andreas Fhager, Hoi-Shun Lui, and Mikael Persson, "Comparison Between Two Phase-Retrieval Methods for Electromagnetic Source Modeling," Progress In Electromagnetics Research B, Vol. 30, 239-253, 2011.
doi:10.2528/PIERB11020507
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