Extraction of equivalent array dipole-moments model from only magnitude data of near-field scan

A method to extract an equivalent array of dipole-moments model from only the magnitude data of near-field scan is proposed. The method can extract both magnitude and phases of the equivalent dipole-moments by using the nonlinear least square (NLS) method, although the information used for source modeling is limited to only the field magnitudes. The truncated singular-value decomposition (SVD) method is employed in realizing the regularization technique in NLS method. The proposed source modeling method does not require the measurement of field phases, which can reduce much labor in measurements.