The characterization of 3D antenna radiation patterns is time consuming. The field acquisition duration can be dramatically reduced by leveraging the sparsity of the radiated field spectrum into spherical harmonic basis. Only a small number of measurements points are then necessary to identify the few significant spherical coefficients describing accurately the antenna pattern. In practice, this compressed sensing based procedure requires carefully chosen settings to work efficiently. The fitting to the data and the field sampling strategy are two crucial points in order to ensure a successful fast antenna measurement procedure. Techniques with experimental validations are proposed to ensure a reliable field interpolation. Estimation of savings in acquisition time are also provided to show the interest of the proposed method.

No abstract