Multiple-beam antenna employing dielectric filled feeds for...

H - Electricity – 01 – Q

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H01Q 25/00 (2006.01) H01Q 19/08 (2006.01) H01Q 19/17 (2006.01)

Patent

CA 2372824

An approach for providing a multiple-beam antenna system for receiving and transmitting electromagnetic signals from a plurality of closely spaced satellites is disclosed. Dielectric inserts (213. 215, 217, 219 and 221) are selectively coupled to the feedhorn bodies to alter the radiation patterns according to dielectric constants of the dielectric inserts (213, 215, 217, 219 and 221). A reflector (211) produces multiple antenna beams based upon the altered radiation patterns of the feedhorn bodies. The antenna (400) provides simultaneous transmissions to satellites that are spaced about 2° or less.

L'invention concerne un système d'antenne à faisceaux multiples destinée à recevoir et à émettre des signaux électromagnétiques de plusieurs satellites très rapprochés. Des inserts diélectriques (213, 215, 217, 219 et 221) sont sélectivement couplés à des corps de cornets afin d'altérer les formes de rayonnement en fonction des constantes diélectriques des inserts (213, 215, 217, 219 et 221). Un réflecteur (211) produit des faisceaux multiples d'antenne sur la base des formes altérées de rayonnement des corps de cornets. L'antenne (400) permet de réaliser des émissions simultanées vers des satellites dont l'espacement est d'environ 2 DEG ou moins.

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