摘要
介绍了一种用单片机控制的微波锁相频率源的设计思想、设计方法以及实验测试结果。在对锁相技术(PLL)研究的基础上,从理论上提出了锁相源对参考晶振的指标要求,分析了单片机对输出信号频谱纯度的影响,总结设计中需要注意的几个问题,并提出相应的解决方案,使锁相频率源的性能指标达到最佳状态。
A microwave PLL frequency synthesizer controlled by single chip AT89C2051 is designed, and its result of test is also given. Based on the study of PLL, the theoretical requirement for reference frequency and a method to eliminate the jam of single chip are presented. Several problems needing to be noticed in design and the resolving methods are summed up, and the performance indexes of microwave PLL frequency synthesizer come to a high -point.
出处
《信息技术与信息化》
2006年第6期105-107,共3页
Information Technology and Informatization
关键词
单片机
锁相环
压控振荡器
相位噪声
杂散
Single chip Phase locked - loop（PLL） Voltage - controlled oscillator（VCO） Phase noise Spurious
