Patent ID: 7853227
Filing Date: 2010-12-14
Classification: H03G

Abstract:
1. A system for providing automatic gain control (AGC), said system comprising: a signal path with an RF input and a demodulator; a plurality of power detectors in communication with said signal path, each of said power detectors operable to measure a total broadband power level of a signal in said signal path, each of said power detectors positioned to monitor a point in said signal path corresponding to a change in signal bandwidth, wherein at each of said points said signal includes one or more communication channels in addition to one or more channels processed by said demodulator at a given time; a plurality of digital attenuators distributed throughout said signal path; and a control system operable to receive from each of said power detectors information associated with said power level and to adjust one or more of said digital attenuators in said signal path in response to said information to achieve desired gain control, wherein each of said digital attenuators comprises: