几种锁相频率合成电路的设计  

Several PLL Frequency Synthesizer Circuit Design

作　　者：冯伯翰[1] 冯梦雅[1] 

机构地区：[1]广东松山职业技术学院,广东韶关512126

出　　处：《机电工程技术》2012年第8期166-169,共4页Mechanical & Electrical Engineering Technology

摘　　要：具有高稳定性和准确度的频率源已经成为科研生产的重要组成部分。高性能的频率源可通过频率合成技术获得,随着大规模集成电路的发展,锁相式频率合成技术占有越来越重要的地位。由一个或几个高稳定度、高准确度的参考频率源通过数字锁相频率合成技术可获得高品质的离散频率源。这几种电路都是通过锁相实现相位同步,并通过改变反馈回路中的分频比从而得到N倍的基准频率信号输出。测试结果表明,设计的样机具有良好的输出特性和调制特性,又具有很高的稳定度和准确性及极高的分辨率等优点。High stability and accuracy frequency source has become an important part of the research and production.High-performance frequency source can be obtained through frequency synthesis technology and phase-locked frequency synthesis technology plays an increasingly important role with the development of LSI,By one or several of the high stability,high accuracy reference frequency source through digital PLL frequency synthesizer technology available to high-quality discrete frequency source.These types of circuits through the lock-in phase synchronization and by changing the feedback loop divider ratio,to get N times reference frequency signal output.The test results show that the design of the prototype has a good output characteristics and modulation characteristics,and it has the advantages of high stability and accuracy and high resolution.

关 键 词：合成信号发生器 锁相 倍频 任意倍频 数码显示 

分 类 号：TN74[电子电信—电路与系统]