Receiver for light communication
专利汇可以提供Receiver for light communication专利检索，专利查询，专利分析的服务。并且PURPOSE:To prevent the oscillating operation when the input light level is reduced, by changing the loop gain of the full AGC feedback circuit to the avalanche photodiode in accordance with the input light level. CONSTITUTION:The feedback line in operational amplifier OP of the feedback circuit including full AGC to the avalanche photodiode and electric AGC to the gain variable amplifier consists of the parallel circuit of resistance R2, capacitor C, resistance R3, and diode D. The gain of amplifier OP becomes -R2/R1 for the electric AGC operation; and for the full AGC operation, diode D becomes conductive, and capacitor C and resistance R3 are inserted into the feedback line of amplifier OP in parallel with resistance R2, and therefore, the gain of the amplifier is not increased when input voltage ei becomes small. Since capacitor C is used for phase compensation, a margin is given to the phase operation of the oscillating operation. If the voltage control nonlinear element where the resistance value is reduced when voltage ei is increased is used as resistance R3, the gain of the AGC control system is not increased to prevent oscillation even if the input light is broken.，下面是Receiver for light communication专利的具体信息内容。
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