An overview of applications of the aperture orthogonal polynomials method in the development of antenna systems

摘要

The aperture orthogonal polynomials (AOPs) method, a new technique for phase control of antenna systems, is reviewed; and several problems solved with this method are considered. It is demonstrated that phase control algorithms that ensure the beam orientation of linear and planar phased arrays (PAs) with various geometrical parameters in the prescribed directions and simultaneous beam nulling in the directions of jamming signals are more accurate in comparison with traditional phase control algorithms. The criterion is obtained that provides for suppression of broadband jamming signals by forming the sector-shaped nulls of linear and planar PAs beams. Algorithms for determining the laws of optimal elements arrangement in non-uniformly spaced PAs, thus securing against parasitic side lobes of high intensity in wide-angle scan and for an extended (up to 2-3 octaves) frequency band, arc considered.