Digital demodulator arrangement for quadrature signals
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United States of America Patent
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-
Apr 15, 1986
Grant Date -
N/A
app pub date -
Oct 18, 1984
filing date -
Oct 29, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A direct conversion receiver in which the quadrature I and Q signals are converted into pulse density modulated digital data streams by delta-sigma modulators 14, 15. The resultant digital data streams are then processed in a logic block 18 according to predetermined logic truth tables. The digital output of the processor 18 is then converted back to an analogue signal.
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