Title :
A very low phase noise fully integrated CMOS quadrature LC oscillator for 2.4 GHz bluetooth/WLAN applications
Author :
Frioui, Oussama ; ZaiD, Lakhdar ; Rahajandraibe, Wenceslas ; Haddad, Fayrouz
Author_Institution :
L2MP -CNRS, Marseille
Abstract :
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.
Keywords :
Bluetooth; CMOS integrated circuits; UHF oscillators; phase noise; voltage-controlled oscillators; wireless LAN; Bluetooth-WLAN application; QVCO; current 20 mA; frequency 1 MHz; frequency 2.4 GHz; frequency 2.41 GHz to 2.64 GHz; fully integrated CMOS quadrature LC oscillator; quadrature voltage-controlled oscillator; very low phase noise; voltage 2.5 V; wireless local area nework; Bluetooth; Circuits; Energy consumption; Filters; Phase noise; Radio frequency; Signal generators; Transceivers; Voltage-controlled oscillators; Wireless LAN;
Conference_Titel :
Communications and Information Technologies, 2007. ISCIT '07. International Symposium on
Conference_Location :
Sydney,. NSW
Print_ISBN :
978-1-4244-0976-1
Electronic_ISBN :
978-1-4244-0977-8
DOI :
10.1109/ISCIT.2007.4391984
