Design and frequency/phase-noise analysis of a 10-GHz CMOS ring oscillator with coarse and fine frequency tuning

被引：7

作者：

Liu, HQ ^{[1
]}

Goh, WL ^{[1
]}

Siek, L ^{[1
]}

机构：

[1] Nanyang Technol Univ, Ctr Integrated Circuits & Syst, Sch Elect & Elect Engn, Singapore 639798, Singapore

来源：

ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING | 2006年 / 48卷 / 02期

关键词：

VCO; ring oscillator; 10-GHz; phase noise; CMOS;

D O I：

10.1007/s10470-006-7226-6

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 [计算机科学与技术];

摘要：

A 10-GHz CMOS ring oscillator that employs a multi-pass technique for boosting its frequency is proposed in this paper. The proposed circuit allows the tuning gain to be lowered by deploying the coarse/fine frequency tuning whilst maintaining wide frequency coverage. The small signal model of the proposed delay stage and the circuit operation are discussed in this paper. The time-variant analysis presented permits accurate prediction of the frequency tuning characteristic and the results have been verified by simulation. The phase noise analysis is also discussed in detail to provide better insight to the noise that is contributed by each transistor. The calculated results agreed well with that of the simulations.

引用

页码：85 / 94

页数：10