异步Sigma-Delta调制的系统级设计

被引：2
|
作者：
程瑜华
谭年熊
机构：
[1] 浙江大学超大规模集成电路设计研究所
来源：
电路与系统学报 | 2010年 / 15卷 / 05期
关键词：
异步sigma-delta调制; VDSL线路驱动器; 极限环频率; 线性度; 传输延时;
D O I：
暂无
中图分类号：
TN761 [调制技术与调制器];
学科分类号：
摘要：
异步sigma-delta调制(asynchronous sigma-delta modulator,ASDM)在30-MHz带宽VDSL线路驱动器应用中,输出缓冲器的传输延时限制了系统的性能。本文采用时域分析的方法,得到了1阶、2阶ASDM系统的振荡频率与输入信号之间的关系,并给出了系统增益的表达式和3次谐波计算的经验公式,经Matlab仿真验证,具有较高的精度。本文的工作对ASDM的其他应用也具有较好的指导作用。
引用
收藏
页码：1 / 6+12 +12
页数：7
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