Patent ID: 6759993
Filing Date: 2004-07-06
Classification: H01Q

Abstract:
Dual polarisation antenna with reduced side lobes that comprises:two electromagnetic waves orthogonally polarised and on a different frequency; a feed horn (11) that emits the two electromagnetic waves; and a reflector assembly (12) illuminated by the feed horn (11) that emits the two electromagnetic waves; characterised in that the reflector assembly (12) comprises a front reflector (15) that is configured to reflect the two electromagnetic waves, an auxiliary reflector (16) that is configured to reflect one of the orthogonally polarised electromagnetic waves, and a deflecting surface (13) that is configured to diffract the orthogonally polarised electromagnetic wave that passes through the auxiliary reflector (16); wherein the front reflector (15) is deposited on the central zone of a face of a supporting surface (14) that faces the feed horn (11) and wherein the auxiliary reflector (16) is situated around the periphery of the front reflector (15), on top of the face of the supporting surface (14) which faces the feed horn (11).