Telecommunications – Receiver or analog modulated signal frequency converter – Noise or interference elimination
Reexamination Certificate
2011-03-22
2011-03-22
Nguyen, Duc (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Noise or interference elimination
C455S232100, C455S245100, C375S319000, C375S345000
Reexamination Certificate
active
07912437
ABSTRACT:
A radio frequency receiver (102) includes at least one amplifier (108, 114and122) for amplifying a signal received by the radio frequency receiver, an automatic gain control system (158) for controlling a gain of the at least one amplifier, and a direct current offset correction filter (142) for reducing any direct current component of the signal amplified by the at least one amplifier. The direct current offset correction filter has a bandwidth that is dynamically controlled by a change in the gain of the at least one amplifier. The radio frequency receiver also includes a digital automatic gain control unit (150) having a bandwidth that is dynamically controlled by the change in the gain of the at least one amplifier.
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Rahman Mahibur
Sobchak Charles LeRoy
Chow Charles
Freescale Semiconductor Inc.
Nguyen Duc
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