DocumentCode
2215696
Title
Phase noise in multi-gigahertz CMOS ring oscillators
Author
Hajimiri, Ali ; Limotyrakis, Sotirios ; Lee, Thomas H.
Author_Institution
Center for Integrated Syst., Stanford Univ., CA, USA
fYear
1998
fDate
11-14 May 1998
Firstpage
49
Lastpage
52
Abstract
An analysis of the phase noise in differential and single-ended ring oscillators using a time-variant model is presented. An expression for the RMS value of the impulse sensitivity function (ISF) is derived. A closed-form equation for phase noise of ring oscillators is calculated and a lower limit on the phase noise of ring oscillators is shown. Phase noise measurements of oscillators running up to 5.5 GHz are in good agreement with the theory
Keywords
CMOS analogue integrated circuits; MMIC oscillators; integrated circuit noise; phase noise; 5.5 GHz; RMS value; closed-form equation; differential ring oscillators; impulse sensitivity function; multi-gigahertz CMOS ring oscillators; noise measurements; single-ended ring oscillators; time-variant model; Clocks; Communication systems; Fluctuations; Noise measurement; Phase measurement; Phase noise; Radio frequency; Ring oscillators; Semiconductor device modeling; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Custom Integrated Circuits Conference, 1998. Proceedings of the IEEE 1998
Conference_Location
Santa Clara, CA
Print_ISBN
0-7803-4292-5
Type
conf
DOI
10.1109/CICC.1998.694905
Filename
694905
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