文件名称:
Hangup in Phase-Lock Loops
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文件大小: 561kb
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上传时间: 2017-09-21
详细说明: Abstruct-A phase-lock loop occasionally will take a long time to settle to equilibrium. Phase dwells at a large error for a prolonged in- terval. This phenomenon has been dubbed “hangup.” The periodic nature of phase detectors is responsible fo r hangup, which OCCUIS near the reverse-slope, unstable null. Restoring force is small in the vicinity of the reverse null, and noise causes the loop to equivocate about the null. Hanguivps e rtyr o ublesomwe hefn a sa tc quistioinns e eded withh i grh e liabilityO . nee x ample is synchronization of digital communications. Hangupsc anb ea voided if a larger estoringf orcei sa ppliedf or large phase errors and if equivocation is prevented. An implementation of an antihangup circuit is proposed. ...展开收缩
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