Digital receiver with tunable analog parameters and method therefor
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United States of America Patent
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Feb 24, 1998
Grant Date -
N/A
app pub date -
Mar 26, 1996
filing date -
Mar 26, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A digital data receiver includes tunable analog components having variable parameters that are responsive to the bit error rate (BER) of the decoded digital data. The analog components include a quadrature generator having a tunable phase shifter, an analog filter having a tunable bandwidth, a tunable magnitude equalizer circuit, a tunable group delay equalizer circuit, and an amplifier having an adjustable gain. The tunable components are controlled by tuning control signals that incorporate digitally-produced fine tuning signals. The digital tuning signals are altered in accordance with realtime changes in the BER.
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