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SYSTEM FOR SIMPLIFICATION OF RECONFIGURABLE BEAM-FORMING NETWORK PROCESSING WITHIN A PHASED ARRAY ANTENNA FOR A TELECOMMUNICATION S SATELITE
SYSTEM FOR SIMPLIFICATION OF RECONFIGURABLE BEAM-FORMING NETWORK PROCESSING WITHIN A PHASED ARRAY ANTENNA FOR A TELECOMMUNICATION S SATELITE
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机译:卫星卫星的相控阵天线内可重构波束形成网络处理的简化系统
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摘要
A telecommunications satellite having a phased array antenna, wherein the beam-forming function within the phased array is simplified by partitioning it into two stages, in which the sub-array stage relates to a fixed, or infrequently changed,set of overlapping sub-arrays and the main stage provides the main pattern reconfiguration, typically in the form of multiple reconfigurable spot beams within a defined coverage region. The key advantage lies in the significant reduction in number of second stage beam-forming control points (at which independent amplitude and phase is applied) when compared with a conventional phased array (where amplitude and phase control is applied for each element of the array). The sub-array stage beam-forming may be implemented in analogue technology. The main beam-former may be implemented in digital technology, where the key processing functions of A/D or D/A conversion, frequency (de)multiplexing and digital beam-forming all scale with the number of control points. WO2009013527A1
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