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International Journal of Antennas and Propagation
Volume 2012, Article ID 124348, 5 pages
http://dx.doi.org/10.1155/2012/124348
Research Article

Implementation of an Innovative Method to Design Reflectarray Antennas

Electromagnetic Computing Group, Computer Science Department, University of Alcalá, Escuela Politécnica, Alcalá de Henares, 28871 Madrid, Spain

Received 2 March 2012; Revised 16 May 2012; Accepted 5 June 2012

Academic Editor: Sandra Costanzo

Copyright © 2012 Abdelhamid Tayebi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A novel computed aided technique for designing reflectarray antennas is presented. The developed approach automatically generates the geometrical model of reflectarray antennas taking into account some input parameters, such as, the unit cell type and dimensions, frequency, focal length, periodicity, dielectric materials, and desired main beam radiating direction. The characteristics of the reflecting elements are selected considering the spatial phase delay at each unit cell to achieve a progressive phase shift. The implemented procedure also provides the phase characteristic of the unit element, which is rapidly computed by using a parallelized Moment Method (MoM) approach. The MoM is also used to obtain the radiation pattern of the full reflectarray antenna. In order to evaluate the new technique, a dual-interface prototype has been designed and simulated showing high-performance capability.