In the last years, the Synthetic Aperture Radar (SAR) systems evolution migrates toward the
use of multi-channel systems based on Digital Beam Forming (DBF) techniques [1]. This tendendy
allows fulfilling stringent SAR requirements, providing high spatial resolution within a wide swath.
Moreover, the combination of DBF techniques with parabolic reflector antennas merges both
flexibility and high antenna gain ending up in a high versatile system [2].
One of the main parts in a Digital Beam Forming (DBF) Synthetic Aperture Radar system is
constituted by the antenna. An accurate characterization of the antenna radiation pattern is of high
interest for the calibration of the system which guarantees the performance and versatility of the
DBF network. This paper describes the measurements of a multi- feed single offset reflector antenna
designed in X-band. The antenna is part of an on ground multi-channel radar system used to
demonstrate ind investigate DBF techniques at HR/DL
