Title :
Planar superstrate made with meta-material particles for dual-polarized dual-frequency antennas and circularly polarized antennas
Author :
Ugarte-Muñoz, E. ; Herraiz-Martínez, F.J. ; Montero-de-Paz, J. ; García-Muñoz, L.E. ; Segovia-Vargas, D.
Author_Institution :
Dept. of Signal Theor. & Commun., Carlos III Univ. of Madrid, Leganes, Spain
Abstract :
In this paper we have studied a partially reflecting surface (PRS) for linearly polarized antennas. Furthermore, a PRS for dual-polarized and dual-frequency antennas which provide a measured gain improvements up to 6dB in both frequency bands and polarizations has been achieved. Finally, we have modified this last PRS in order to obtain a superstrate suitable for circularly polarized patch antennas. This superstrate provided a directivity enhancement of 7dB (in simulation), keeping an AR<;3dB beamwidth of 65°.
Keywords :
metamaterials; multifrequency antennas; planar antennas; circularly polarized antennas; dual-polarized dual-frequency antennas; linearly polarized antennas; metamaterial particles; partially reflecting surface; planar superstrate; Antenna measurements; Arrays; Cavity resonators; Frequency measurement; Patch antennas; Reflection;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2010 IEEE
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4244-4967-5
DOI :
10.1109/APS.2010.5561162
