Null processing and beam steering receiver apparatus and method
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United States of America Patent
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May 31, 1994
Issued Date -
N/A
app pub date -
Jun 28, 1993
filing date -
Jan 6, 1992
priority date (Note) -
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Abstract
A system for processing modulated signals received, together with at least one interference signal, by an array of antenna elements in a communications receiver. The method of the invention includes demodulating the received signals, and processing the demodulated signals to produce an output signal that is substantially free of any interference signals, while at the same time effectively steering the antenna pattern produced by the array of elements, to move any spurious nulls in the pattern away from a source of information signals. This results in avoidance of any cycle slipping problems that might otherwise arise in receiver tracking control loops, and has the added benefit of significantly improving performance as measured by the signal-to-noise ratio.
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