CPC H03G 3/3068 (2013.01) [H03F 3/195 (2013.01); H03F 2200/294 (2013.01); H03F 2200/451 (2013.01)] | 16 Claims |
1. An automatic gain control circuit, for controlling an amplifier for receiving signals, said automatic gain control circuit comprising: a power detector coupled to the amplifier, wherein the power detector receives a first signal outputted from the amplifier and outputs a first voltage level representing a first power level of the first signal; a control circuit for controlling the power detector, wherein the control circuit detects a power level change of the first signal and generates a control signal to the power detector for responding to the power level change of the first signal.
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