Application of Accelerated Polar Near-Field to Far-Field Transform to Plane-Bi-Polar Measurements

The plane-bi-polar near-field measurement technique is a well-known and long-established method for determining far-field antenna patterns of medium to high gain antennas that is predicated on the use of a very simple positioning system that in essence comprises just two rotation stages. Hitherto, this technique has been comparatively sparsely deployed however the recent heightened interest in utilising articulated multi-axis industrial robots for the positioning systems of modern antenna test systems has similarly increased the amount of interest that this technique has received. This paper is an extension of the authors’ prior work where here, for the first time, the recently developed efficient polar near-field to far-field transform is adapted to accommodate the plane-bi-polar case. The adapted plane-bipolar non-interpolatory transform is developed with preliminary simulation results presented that verify the success of the efficient, novel, data processing technique. The requisite plane-polar sampling theorem is examined with implications on the computation of the corresponding Bessel series discussed.