Modulator evaluation method in Δ-Σ fractional-N frequency synthesis

被引：0

作者：

Borkowski, MJ ^{[1
]}

Riley, TAD ^{[1
]}

Kostamovaara, J ^{[1
]}

机构：

[1] Univ Oulu, Dept Elect & Informat Engn, Elect Lab, FIN-90014 Oulu, Finland

来源：

2004 INTERNATIONAL CONFERENCE ON COMMUNICATION, CIRCUITS, AND SYSTEMS, VOLS 1 AND 2: VOL 1: COMMUNICATION THEORY AND SYSTEMS | 2004年

关键词：

delta sigma; digital; sequence length; post modulator filtering;

D O I：

10.1109/ICCCAS.2004.1346384

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

The choice of a Delta-Sigma modulator architecture has a significant impact on the performance of the Delta-Sigma frequency synthesizer. This work is focused on a modulator design method that allows full modulator and synthesizer characterization. It is shown here that the MASH architecture can be designed to maintain a constant, arbitrarily long, output sequence for each input DC value. Modulator designed in such a way spreads the quantization noise over known, arbitrarily large number of tones within the Nyquist bandwidth. Post modulator filtering is considered as a case study.

引用

页码：1174 / 1178

页数：5

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