摘要:
The invention provides a reflector antenna, especially for a communications satellite, having at least one fixed main reflector (102) with an essentially circular aperture. A fixed feed system (118) includes a horn radiator (108) with a rotationally symmetric radiation diagram and a fixed polarization direction. An auxiliary reflector may be arranged to be rotationally positionable around a main axis (E) and has a reflecting surface that is shaped as a partial surface of a nonrotationally symmetric ellipsoid with a low numerical eccentricity, which illuminates main reflector (102) elliptically with an ellipticity that is essentially constant regardless of the rotational position.
摘要:
An antenna mounted on a supporting system primary structure of a vehicle, in which the supporting system primary structure has an indentation. The antenna includes an EM functional core incorporated into the indentation of the supporting system primary structure, and a cover plate forming one of an upper and outer cover of the EM functional core that is structured and arranged as a conformal outside. Furthermore, boundary areas of the cover plate are connected with the supporting system primary structure. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
摘要:
An antenna mounted on a supporting system primary structure of a vehicle, in which the supporting system primary structure has an indentation. The antenna includes an EM functional core incorporated into the indentation of the supporting system primary structure, and a cover plate forming one of an upper and outer cover of the EM functional core that is structured and arranged as a conformal outside. Furthermore, boundary areas of the cover plate are connected with the supporting system primary structure. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.