本文介绍了一种鉴频鉴相器,由于电路简单,性能优良,国内采用曰益广泛。但迄今尚未见到国外针对性强的技术文献。为此国内许多单位发表过自己的分析和见解。本文讨论了这些资料所末涉及或值得商榷的某些内容,如反馈管的用途,波纹抵消条件,反馈环稳定性及鉴频特性等。 This paper introduces a phase frequency detector, due to the circuit is simple, excellent performance, said Yue said the domestic widespread. However, so far no specific technical documents have been seen in other countries. To this end many units published their own analysis and insights. This article discusses some of the information that is beyond reach or open to question, such as the purpose of feedback tubes, ripple cancellation conditions, feedback loop stability, and frequency discrimination characteristics.