高性能频率合成器设计方法研究  

Design of High-Performance Frequency Synthesizer

作　　者：胡坤[1] 

机构地区：[1]安徽职业技术学院,安徽合肥230051

出　　处：《通信技术》2009年第3期81-83,86,共4页Communications Technology

摘　　要：通过对部件相位噪声性能的分析,进行结构指数最大化设计,得到最简总体结构设计。利用混频互调分量分析,避开各级混频组合干扰,得到系统各级结构的频率方案设计。利用DDS器件的结构优势对频率合成器结构进行优化,进一步简化设计结构。根据相位噪声性能的分析结果,进行环路滤波器设计,消除参数设计中的随意性,保证设计过程中系统的相位噪声性能。This paper, in the light of the analysis on phase noise performance, describes the maximal design of the structure index and the minimal design of the overall structure. The mixing intermodulation component analysis is used to produce the design scheme of all-level structure frequency of the system, and thus to avoid the interference at all-level mixing combinations. The structure superiority of DDS device is Utilized to optimize the frequency synthesizer structure and further simplify the design structure. Based on the analysis of phase noise performance, the loop filter is designed, thus to eliminate the randomness of index design and ensure the phase noise performance of the system in the course of the design.

关 键 词：DDS+PLL 频率合成 设计方法 

分 类 号：TN74[电子电信—电路与系统]