An efficient parametric near-field-to-far-field transformation technique

This paper presents an efficient numerical method for computing antenna patterns over broad frequency bands and wide ranges of look angles. The proposed scheme is based on finite-element analysis and the empirical interpolation technique, and employs a new sub-domain approach on the Huygens surfaces to speed-up the offline part of the algorithm. Numerical results demonstrate that computational efforts are reduced by orders of magnitude, compared to conventional methods.