Restoration of Piecewise-Constant Currents Distribution on Antenna Aperture Plane by Extension Minimum Method

The problem of determination of distribution of currents on aperture plane from near-field antenna measurements is considered. Modification of extension minimum method is applied for currents estimation problem, which outperforms standard regularization technique, when there is a priori information about finiteness of unknown support of currents on aperture plane. Plane scanning geometry is used for numerical simulation. Results are presented for one-dimensional aperture case.