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滤波器the无源低噪声 | 邮电通讯系统 2022-07-30 101 0star收藏 版权: . 保留作者信息 . 禁止商业使用 . 禁止修改作品
克制鉴相器输出电压中的载频分量和高频噪声,降低由压控振荡器控制电压不纯而致使的寄生输出。采用无源滤波器可以达到电路结构简单、低噪声、高安稳度的意图。由于前次设计的无源滤波器仿真作用不志向,教师让大家改做有源滤波器。

(It restrains the carrier frequency component and high-frequency noise in the output voltage of the phase detector, and reduces the parasitic output caused by the impure control voltage of the VCO. The use of passive filters can achieve the purpose of simple circuit structure, low noise and high stability. Because the passive filter simulation function of the previous design was not satisfactory, the teacher asked everyone to change to an active filter.)

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