Pulse or digital communications – Receivers – Automatic frequency control
Patent
1996-03-26
1998-02-24
Chin, Stephen
Pulse or digital communications
Receivers
Automatic frequency control
375350, 364315, H04L 2706
Patent
active
057217564
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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Stanford Telecom ASIC & Custom Products Catalog, Eighth Edition,--cover sheet and pp. 55-67.
Brombaugh Eric Martin
Crawford James J.
Liebetreu John Michael
McCallister Ronald Duane
Chin Stephen
Roundtree Joseph
SiCOM, Inc.
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