一种基于梳状波发生器的频率合成器设计  

Frequency Synthesizer Based on COMB Wave Generator

作　　者：凌伟[1] LING Wei(The 41st Research Institute of CETC,Qingdao 266555,China)

机构地区：[1]中国电子科技集团公司第四十一研究所,山东青岛266555

出　　处：《电声技术》2018年第11期16-17,共2页Audio Engineering

摘　　要：本文利用梳状波发生器设计了一种频率合成器。它利用梳状波发生器产生离散点频信号,实现了单环锁相环路。实验证明,本频率合成器可以产生3～10 GHz范围内的点频信号,载波频率为4. 85 GHz时,信号的相位噪声优于-127 dBc/Hz@100 k Hz;二次谐波抑制小于-40 dBc;杂散抑制小于-80 dBc。One kind of frequency synthesizer based on COMB Wave Generator is introduced in this paper.COMB Wave Generator is used to generate discrete signal,then single circle PLL is achieved.Our test indicated that this kind of frequency synthesizer can generate discrete signal between 3 GHz to 10GHz,the phase noise is below -127dBc/Hz@ 100kHz when the carrier frequency is4.85GHz.The second harmonic suppression is below -40dBc,and the spurious suppression is below -80dBc/Hz.

关 键 词：梳状波发生器 锁相环 相位噪声 

分 类 号：TN74[电子电信—电路与系统]