利用DDS镜像频率的宽带信号源设计

被引:1
作者
赵洪新
曹旭峰
齐宁华
机构
[1] 东南大学毫米波国家重点实验室
关键词
宽带信号源; DDS; 镜像频率; 自动电平控制; 数字调制;
D O I
暂无
中图分类号
TN74 [频率合成技术、频率合成器];
学科分类号
摘要
提出了一种新方法,利用DDS(直接数字频率合成)器件的镜像输出频率分量,实现了常规DDS合成器方案所无法实现的超越奈奎斯特频率限制的信号频率输出,且易于实现高精度的载波频率控制和数字调制功能;实验原型电路采用了ALC(自动电平控制)技术补偿镜像和基频分量的衰减,实现了10 Hz500 MHz的宽带信号输出,带内波动小于1 dB。
引用
收藏
页码:1822 / 1824
页数:3
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