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In this report, we propose a new calibration matrix by using the re-radiation and transmission mutual impedances. The numerical results show that accuracy of the calibration matrix can be improved by our definition. By using the method, mutual coupling effect of single-mode arrays can be calibrated with measured S parameters of the receiving array without external reference signals and/or numerical calculation of current distributions. Therefore, the proposed method would be useful for high-resolution DOA estimation with dipole or monopole arrays.