A very low phase noise fully integrated CMOS quadrature LC oscillator for 2.4 GHz bluetooth/WLAN applications

This paper presents a quadrature voltage-controlled oscillator (QVCO) based on the coupling of two LC-tank VCOs. The QVCO could be tuned between 2.41 and 2.64 GHz, and showed a phase noise of -139 dBc/Hz at 1 MHz offset frequency from the carrier across the whole tuning range, for a current consumpt...

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Bibliographic Details
Published in2007 International Symposium on Communications and Information Technologies pp. 55 - 60
Main Authors Frioui, O., Zaid, L., Rahajandraibe, W., Haddad, F.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2007
Subjects
Bluetooth
Circuits
Energy consumption
Filters
Phase noise
Radio frequency
Signal generators
Transceivers
Voltage-controlled oscillators
Wireless LAN
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Summary:This paper presents a quadrature voltage-controlled oscillator (QVCO) based on the coupling of two LC-tank VCOs. The QVCO could be tuned between 2.41 and 2.64 GHz, and showed a phase noise of -139 dBc/Hz at 1 MHz offset frequency from the carrier across the whole tuning range, for a current consumption of 20 mA with 2.5-V power supply. A figure-of-merit of -190 dBc/Hz is observed.
ISBN:9781424409761
1424409764
DOI:10.1109/ISCIT.2007.4391984