Analyze and design 10-GHz 0.8-VDD -117dBc/Hz quadrature LC-VCO in 120nm CMOS technology

Author

Liang, Bangli ; Chen, D. ; Guo, H. ; Wang, B. ; Zhigong Wang ; Kwasniewski, T.

Author_Institution

Dept. of Electron., Carleton Univ., Ottawa, ON, Canada

fYear

2010

fDate

21-23 June 2010

Firstpage

420

Lastpage

423

Abstract

A low supply voltage low phase noise 10-GHz CMOS quadrature LC-VCO (LC-QVCO) is systematically analyzed and designed for low power applications in wireline and wireless communication systems. Using a semi-empirical model, the impacts on VCO oscillation magnitude, loaded quality factor (Q_loaded), and oscillation frequency from the parasitic components of passive and active devices are formulated in simple mathematic equations. The predicted VCO performance and the widely used linear model of LC-QVCO are verified by time-domain simulations, frequency-domain total loop gain analysis, and measurement data based on a 120 nm RF CMOS technology.

Keywords

CMOS analogue integrated circuits; MMIC oscillators; Q-factor; frequency-domain analysis; low-power electronics; phase noise; time-domain analysis; voltage-controlled oscillators; LC-QVCO linear model; RF CMOS technology; VCO oscillation magnitude; active devices; frequency 10 GHz; frequency-domain total loop gain analysis; loaded quality factor; low power electronics; low supply voltage low phase noise CMOS quadrature analysis; mathematic equations; measurement data; oscillation frequency; parasitic components; passive devices; quadrature LC-VCO design; semiempirical model; size 120 nm; time-domain simulations; voltage 0.8 V; wireless communication systems; wireline communication systems; CMOS technology; Low voltage; Mathematical model; Phase noise; Power system modeling; Predictive models; Q factor; Semiconductor device modeling; Voltage-controlled oscillators; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Green Circuits and Systems (ICGCS), 2010 International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-6876-8

Electronic_ISBN

978-1-4244-6877-5

Type

conf

DOI

10.1109/ICGCS.2010.5543028

Filename

5543028