Infinite ground plane antenna characterization from limited groundplane measurements

The accurate measurement of the infinite ground plane antenna patterns are needed in different applications as discussed in [1–11]. The infinite ground plane condition is difficult to measure on a general antenna due to the finite dimensions of the measurement systems. In spherical near field measurement systems the measured antenna field is described completely by the spherical wave spectrum determined by a near field to farfield transformation [12, 13]. To recover the spherical wave spectrum of the finite ground plane source as if it was placed on an infinite ground plane the field scattered by the finite ground plane edges has to be removed.