Auxiliary sources for the near-to-far-field transformation of magnetic near-field data

A novel algorithm to perform a near-to-far-field transformation, starting from the magnetic field measured over a finite planar area above the device-under-test, is proposed. The algorithm is based on the introduction of auxiliary sources that approximate the magnetic field in the scanning plane outside but the scanning area. Numerical results show that these auxiliary sources significantly increase the accuracy of the near-to-far-field transformation.