Abstract: This Paper Presents the Spacecraft antenna characteristics such as the beam types, polarization of waves and antennas, space environment constraints and the relations between antennas and spacecraft system arrangement. The new progress of spacecraft antenna techniques, such as muhibeam antennas, frequency spectrum reuse, adaptive techniques, multiuse of antennas, deployable antennas, CAD of antennas, composite materials and new technigues usedin measuremants are illustrated.