摘要
根据小数分频锁相环的工作原理,分析了小数分频杂散产生的机理,给出了分析小数分频杂散的环路线性化模型及计算公式,讨论了抑制小数分频杂散的途径,对一个实际的小数分频锁相环进行了测试,其结果与理论分析基本一致。
According to the principle of phase—locked toops with a fractional-N,this paper analyses the causes of spurious outputs in a fractional-N loop,and presentsthe linearized model of the PLL and the formulas to calculate the spurious outputs.Someresults of experiment in a practical fractional-N loop are given,which are consistent withtheoretical proof.Finally,the ways to compensate spurious outputs in a fractiona—Nloop are proposed.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
1990年第2期139-144,共6页
Journal of University of Electronic Science and Technology of China
关键词
小数分频
锁相环
输出杂散
补偿
phase-locked loops
a fractional-N loop
spurious outputs
compensation
