Title :
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
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 (Qloaded), 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;
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
DOI :
10.1109/ICGCS.2010.5543028
