直接数字频率合成器相位截断杂散谱的精确分析  

Precise Analysis of the Spurious Spectrum of DDS in the Presence of Phase Truncation

作　　者：谢仁宏[1] 是湘全[1] 

机构地区：[1]南京理工大学通信工程系,南京210094

出　　处：《电子与信息学报》2004年第3期495-499,共5页Journal of Electronics & Information Technology

摘　　要：该文在Nicholas采用数论方法得到的相位截断杂散谱的幅度和位置分布结果的基础上,运用 映射和数论工具对杂散谱位置分布进行了分析,提出了一种简化算法,可精确分析相位截断杂散谱的谱线幅 度和杂散位置.Based on the analysis of the spurious spectrum introduced by phase truncation which was made by Nicholas, the new simplified algorithm of spurious spectrum in the presence of phase truncation is presented by using the mapping mathematics and number theory. It is possible to precisely analyze the spurious spectrum location and the spurious amplitude introduced by phase truncation in practical applications.

关 键 词：直接数字频率合成器 相位截断 杂散谱 杂散位置 谱线幅度 映射 数论 

分 类 号：TN741[电子电信—电路与系统]