CMOS LC quadrature oscillators with enhanced tuning range by selective mode switching

Quadrature oscillators (QOSCs) can operate in two selective modes of quadrature oscillation. By controlling the mode of oscillation, different wide tuning range CMOS LC QOSCs have been designed. The measured tuning range is 60% for 3.7 GHz design and 94% for 1.3 GHz design. Phase noise measurement s...

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Bibliographic Details
Main Authors: Bagheri, M., Bagheri, R., Larson, L. E.
Format: Conference Proceeding
Language:English
Subjects:
CMOS
CMOS integrated circuits
Frequency measurement
Phase measurement
Phase noise
quadrature oscillator
Quality of service
Tuning
tuning range
Online Access:Request full text
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Summary:Quadrature oscillators (QOSCs) can operate in two selective modes of quadrature oscillation. By controlling the mode of oscillation, different wide tuning range CMOS LC QOSCs have been designed. The measured tuning range is 60% for 3.7 GHz design and 94% for 1.3 GHz design. Phase noise measurement shows that by this modified series coupled QOSC (S-QOSC) a FOMT (figure of merit with tuning range) of 199 dB can be achieved.
ISSN:1529-2517
2375-0995
DOI:10.1109/RFIC.2012.6242285