Automatic gain control system
专利汇可以提供Automatic gain control system专利检索，专利查询，专利分析的服务。并且PURPOSE:To make broader the range of automatic gain control and to enable stable operation, by controlling the loop gain which controls the variable gain amplifying circuit with the gain under limit of the gain control loop of the variable gain photo detection circuit. CONSTITUTION:the reception signal is converted into electric signal with the avalanche photo diode APD11, amplification is made with the variable gain amplifier 12 and output is made to the identification circuit 15 and the peak detector 13. When the peak detection output is compared 17 and the voltage control circuit 16 determines the lower limit of the output voltage in advance. The output of the comparator 14 controls the circuit 16. The control loop in which the output voltage is the bias voltage of APD 11 and the control loop controlling the amplifier 12 with the output of the comparator 17 when the output of the comparator 14 is more than a given value, are automatically changed over, holding the reception output level at a constant value. Thus, the range of automatic gain control is made broader and stable operation can be performed.，下面是Automatic gain control system专利的具体信息内容。
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