Automatic gain control apparatus and method

Details Automatic gain control apparatus and method Automatic gain control apparatus and method

H - Electricity

03

G

H03G 3/20 (2006.01) H04J 3/02 (2006.01) H04L 27/22 (2006.01)

Patent

CA 2051982

An automatic gain control apparatus and method which optimally adjusts the gain of an amplifier (105) to compensate for time-varying energy levels of a received input signal (I/Q). A control input signal VCTL for adjusting the gain of the amplifier (105) is determined by the selective average energy level (305) of a present input signal (309), the transfer function characteristic of the amplifier (105) and a previous control signal. A fast loop response time maintains the energy level of the amplified output signal at a nominal level.

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