(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.)
发表于 2022-7-30 16:16:00
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