| 摘要 |
An array fed reflector antenna includes a reflector and a distributed feed array. The reflector has a portion with a dual parabolic shape. The distributed feed array transmits and receives a plurality of electromagnetic energy beams simultaneously, and is positioned adjacent the reflector so that the reflector reflects the transmitted and received electromagnetic energy beams. The distributed feed array is offset from the reflector so that a plane wave formed by the transmitted electromagnetic energy beams reflected by the reflector will not substantially impinge the distributed feed array. The antenna also has a beam switching network which is a hybrid network for selectively actuating separate but overlapping portions of the distributed feed array to produce two transmit elevation beams.
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