A Spatially Processed 3D Wideband Adaptive Conical Array System

This paper presents a novel structure for an adaptive fully spatially processed wideband conical antenna array. A major advantage of this configuration is the frequency invariance of the directional patterns of the array within a relatively large fractional bandwidth which makes this array a potential candidate for wideband and ultra wideband (UWB) technology applications. Furthermore, unlike conventional wideband antenna arrays which use delay lines or time-domain filters, this system relies on fully spatial processing of the incoming or transmitted signals using a single real multiplier for each antenna element, without utilising any phase shifters, digital filters or adjustable delays. Finally, due to the conical shape of the array configuration, beamforming in both azimuth and elevation angles is accomplished with symmetrical and uniform characteristics in all azimuth directions. © 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.