Three-Dimensional beamsteering low complexity reconfigurable multilevel antenna

© 2020 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.A low-complexity reconfigurable antenna (RA) capable of steering its beam into nine different directions corresponding to ¿={-42°,0°,42°} in the ¿={25°,0°,155°} planes, and ¿=±25° in the ¿=90° plane, using a reduced number of switches is presented. The RA operating at 3.4-3.8 GHz consists of a central dipole element excited by a coaxial probe, surrounded by four switchable parasitic dipoles located at different height levels above a ground plane, which acts as either a reflector for the elements located at an upper layer or a director for the ones at a lower layer, improving the radiation characteristics of the antenna. Each parasitic dipole is fed with a p-i-n diode as a switch, which enables the activation of these elements providing the desired modes of operation. The presented RA was manufactured and measured showing results with a good agreement with the theoretical and numerical simulation.This work was supported by the Spanish “ComisionInterministerial de Ciencia y Tecnologia” (CICYT) un-der projects TEC2013-47360-C3-1-P, TEC2016-78028-C3-1-P and MDM2016-0600, and Catalan Research Group 2017SGR 219Peer ReviewedPostprint (author's final draft