LOW COST HIGH PERFORMANCE ANTENNA FOR USE IN INTERACTIVE SATELLITE TERMINALS

摘要

The invention relates to a Interactive Satellite Terminal antenna system comprising an antenna to which is associated a feed horn. This antenna system is characterized in that it comprises an elliptical parabolic main reflector and a corrugated feed horn (2) having an outer elliptical aperture and an inner cylindrical waveguide with an inner portion (7) and a step section (8) and in that cavity elements (10) are added to the step section (8) for compensating cross-polar components. The invention can be used in antenna systems.