Antenna pattern reconstruction by spherical vector waves for spherical antenna measurement

The acquisition of three-dimensional radiation pattern is important for characterizing antenna. Spherical antenna measurement is a practical approach to measured antenna pattern; however, in most cases, the measured samples can not be used directly, and reconstruction is needed to achieve useful data. Spherical vector waves are preferred as tool for pattern reconstruction, and the band-limited property of spherical wave expansion enables to analyse reconstruction by the sampling theorem. This research identifies the limitation of conventional algorithm, and proposes novel approaches to overcome the limitation.