西安电子科技大学学报(自然科学版)
西安電子科技大學學報(自然科學版)
서안전자과기대학학보(자연과학판)
JOURNAL OF XIDIAN UNIVERSITY(NATURAL SCIENCE)
2014年
2期
172-177
,共6页
屈八一%宋焕生%周渭%李珊珊%孟强
屈八一%宋煥生%週渭%李珊珊%孟彊
굴팔일%송환생%주위%리산산%맹강
锁相环%鉴相%相位重合
鎖相環%鑒相%相位重閤
쇄상배%감상%상위중합
phase locked loop%phase detection%phase coincidence
对于输入和输出信号频率接近或者近似成整数倍关系类型的频率变换,利用目前的锁相技术很难解决。基于异频信号间的相位差变换规律,采用相位重合点检测电路、等效鉴相电路、可调偏置型环路滤波器等设计了一种新型的锁相环。实验结果表明,上述锁相环具有低噪声、高稳定度、输出频率便于调整等特点。
對于輸入和輸齣信號頻率接近或者近似成整數倍關繫類型的頻率變換,利用目前的鎖相技術很難解決。基于異頻信號間的相位差變換規律,採用相位重閤點檢測電路、等效鑒相電路、可調偏置型環路濾波器等設計瞭一種新型的鎖相環。實驗結果錶明,上述鎖相環具有低譟聲、高穩定度、輸齣頻率便于調整等特點。
대우수입화수출신호빈솔접근혹자근사성정수배관계류형적빈솔변환,이용목전적쇄상기술흔난해결。기우이빈신호간적상위차변환규률,채용상위중합점검측전로、등효감상전로、가조편치형배로려파기등설계료일충신형적쇄상배。실험결과표명,상술쇄상배구유저조성、고은정도、수출빈솔편우조정등특점。
It is difficult to do a frequency conversion using the current phase-locked technology when the input and output frequencies are approximatly equal or have an approximate integer multiple relationship.Based on the change law of the phase difference between the two different frequency signals,by using the phase coincidence detection circuits,the equivalent phase demodulation circuits and a filter with an adjustable bias,a new type of PLL is realized. Experimental studies are done with the results showing that the phase-locked loop has characteristics such as low noise,high stability,the easy-to-adjust output frequency.