FIELD: radio engineering, communication.
SUBSTANCE: invention relates to phased array antennae, 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 rarely changed set of overlapping sub-arrays and the main stage provides the main pattern reconfiguration in the form of multiple reconfigurable spot beams within a defined coverage region. 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 analogue-to-digital or digital-to-analogue conversion, frequency (de)multiplexing and digital beam-forming are all scaled depending on the number of control points.
EFFECT: significant reduction in number of second stage beam-forming control points compared to a conventional phased array.
35 cl, 13 dwg
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Authors
Dates
2013-08-27—Published
2008-07-18—Filed