Citation
Carrasco Yépez, Francisco Eduardo and Arrebola, Manuel and Encinar Garcinuño, José Antonio and Barba Gea, Mariano
(2008).
Reflectarray para Estación Base LMDS Basado en Parches Acoplados por Apertura.
In: "XXIII Simposium Nacional de la Unión Científica Internacional de Radio", 22/09/2008-24/09/2008, Madrid, España. ISBN 978-84-612-6291-5.
Abstract
A shaped-beam reflectarray based on aperturecoupled elements is demonstrated as central station antenna for Local Multipoint Distribution System (LMDS) in the 10.10- 10.70 GHz band. The antenna must cover a 60° sector in azimuth with a squared cosecant pattern in elevation. The design process consists of two steps. First, a phase-only pattern synthesis technique is applied to obtain the required phase-shift distribution on the reflectarray surface which generates the shaped pattern. The second stage consists of determining the length of the delay lines, aperture-coupled to the squared patches, in order to achieve the phase distribution synthesized in the previous step. A reflectarray antenna has been designed for vertical (V) polarization. A breadboard has been manufactured and tested in an anechoic chamber, showing a good agreement between theoretical and measured radiation patterns.
