Patent ID: 6160520
Filing Date: 2000-12-12
Classification: H01Q

Abstract:
A multiple beam antenna system for simultaneously receiving signals of different polarity that are orthogonal to one another, the system comprising:means for receiving each of first and second polarized signals that are orthogonal to one another;means for simultaneously receiving said first and second signals;at least two feedhorns, at least one per beam, for illuminating at least one shaped bifocal Abbe-sine reflector means; andsaid shaped bifocal Abbe-sine reflector means for establishing at least two foci in a plane, said at least two foci being approximately symmetric about an axis of an aperture of said reflector means in order to obtain an increase in off-axis performance of at least about plus/minus ten (10) beam widths with side lobes lower than about -21 dB.