Title :
A Circularly-Polarized Isoflux Antenna Based on Anisotropic Metasurface
Author :
Minatti, Gabriele ; Maci, Stefano ; De Vita, Paolo ; Freni, A. ; Sabbadini, Marco
Author_Institution :
Information Engineering, University of Siena, Siena, Italy
Abstract :
Theory, design, realization and measurements of an X-band isoflux circularly polarized antenna for LEO satellite platforms are presented. The antenna is based on a metasurface composed by a dense texture of sub-wavelength metal patches on a grounded dielectric slab, excited by a surface wave generated by a coplanar feeder. The antenna is extremely flat (1.57 mm) and light (less than 1 Kg) and represents a competitive solution for space-to-ground data link applications.
Keywords :
Apertures; Impedance; Modulation; Satellite antennas; Satellites; Surface impedance; Leaky wave antennas; metasurface antennas; surface impedance;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2012.2208614
