Probe suppression in dipole array mounted on planar/non-planar conducting surfaces

Abstract

The interference suppression capability of phased array depends on efficacy of adaptive algorithm employed for pattern synthesis. In this paper, the active cancellation of probing sources in dipole array mounted on planar/non-planar conducting surfaces is demonstrated. The optimum antenna weights are obtained using modified improved LMS algorithm. The platform effect and mutual coupling are taken into account. The difficulty in defining location of array elements over non-planar surfaces is taken care-off by a spatial transformation using Euler rotation. A comprehensive performance analysis is carried out in terms of output signal-to-interference noise ratio (SINR) and the suppression of probing for both conformal and flat planar dipole array. The comparison of results shows the efficiency of the modified improved LMS algorithm in catering multi-signal environments while simultaneously maintaining the multi beamforming.