Reactive Near-Field to Far-Field Transformation based on Equivalent Dipoles

This paper proposes a radiation source reconstruction algorithm based on near-field scanning. The actual radiation source is equivalent to a dipole array, and parameters such as dipole position and moment are optimized using differential evolution algorithm. Finally, based on the constructed dipoles, the far-field of the actual radiation source is predicted by using the dipoles. Comparing the equivalent dipole and the actual radiation source with their 1-meter field, the accuracy of this method is verified.