SATELLITE GROUND STATION ANTENNA WITH WIDE FIELD OF VIEW AND NULLING PATTERN

The present invention is applicable to satellite ground station antennas having a wide field of view in comparison to the satellites with which the antenna connects. One embodiment includes a parabolic reflector having a size that corresponds to a beam with an angular half-width larger than the spac...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: STEVEN B. WALTMAN
Format: Patent
Sprache:eng ; spa
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Beschreibung
Zusammenfassung:The present invention is applicable to satellite ground station antennas having a wide field of view in comparison to the satellites with which the antenna connects. One embodiment includes a parabolic reflector having a size that corresponds to a beam with an angular half-width larger than the spacing between neighboring interfering satellites. It also has a feed coupled to the parabolic reflector configured to have a high sensitivity for a target satellite within the angular half-width of the reflector beam and a low sensitivity for neighboring interfering satellites within the angular half-width of the reflector beam. Another embodiment includes projecting a first radiation pattern, such as a digital communications link, between a ground station antenna and a target satellite and projecting a second radiation pattern to a target interferer. La presente invencion es aplicable a antenas de estacion terrestre satelital que tienen un campo de vision amplio en comparacion con los satelites con los cuales se conecta la antena. Una modalidad incluye un reflector parabolico que tiene un tamano que corresponde a un haz con una semiamplitud angular mayor que la separacion entre satelites interfirientes vecinos. Tambien tiene una alimentacion acoplada del reflector parabolico configurado para tener una alta sensibilidad por el satelite blanco dentro de la semiamplitud angular del haz reflector y una baja sensibilidad por los satelites interfirientes vecinos dentro de la semiamplitud angular del haz reflector. Otra modalidad incluye proyectar un primer patron de radicacion, como un enlace de comunicaciones digitales, entre la antena de la estacion terrestre y un satelite 'btLanco y proyectar un segundo patron de radiacion a un interfiriente blanco.