DELTA-SIGMA-MODULATION IN FRACTIONAL-N FREQUENCY-SYNTHESIS

被引:336
作者
RILEY, TAD
COPELAND, MA
KWASNIEWSKI, TA
机构
[1] VLSI in Communications Group, Telecom munications Research Institute of Ontario TRIO, Department of Electronics, Carleton University, Ottawa, Ont.
关键词
D O I
10.1109/4.229400
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper describes a delta-sigma (DELTA-SIGMA) modulation and fractional-N frequency division technique to perform indirect digital frequency synthesis based on the use of a phase-locked loop (PLL). The use of DELTA-SIGMA modulation concepts results in a beneficial noise shaping of the phase noise (jitter) introduced by fractional-N division. The technique has the potential to provide low phase noise, fast setting time, and reduced impact of spurious frequencies when compared with existing fractional-N PLL techniques.
引用
收藏
页码:553 / 559
页数:7
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