DocumentCode :
3140983
Title :
A low phase noise and low power series coupled quadrature VCO using reconfigurable LC tank
Author :
Kim, Cheol-Hoe ; Shin, Soo-Hwan ; Yoo, Hyung-Joun
Author_Institution :
Inf. & Commun. Univ., Daejeon
fYear :
2008
fDate :
22-24 Jan. 2008
Firstpage :
395
Lastpage :
398
Abstract :
To design a multi standard and a multi band transceiver, a quadrature voltage controlled oscillator (VCO), which has a wide tuning range, is essential, while providing low phase noise with low current consumption. In this paper, a dual band quadrature VCO in 0.18 mum CMOS process is presented. To accomplish dual band operation, reconfigurable LC tank is adopted. Series coupling transistors are attached to generate quadrature phase signal with low phase noise and low power consumption. To improve phase noise performance, a current source is eliminated, and a filter inductor at the common source node is added. The measured phase noises of low frequency mode and high frequency mode are -123.8 dBc/Hz and -115.06 dBc/Hz at 1 MHz offset frequency and FoM of -181.8 dB and -180.5 dB with 6.8 mW power consumption.
Keywords :
CMOS integrated circuits; phase noise; voltage-controlled oscillators; CMOS process; common source node; coupling transistors; filter inductor; low phase noise; multiband transceiver; multistandard transceiver; quadrature phase signal; quadrature voltage controlled oscillator; reconfigurable LC tank; size 0.18 mum; CMOS process; Dual band; Energy consumption; Frequency; Phase noise; Power generation; Signal generators; Transceivers; Tuning; Voltage-controlled oscillators; CMOS; dual band; low phase noise; low power; quadrature VCO; reconfigurable LC tank;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Radio and Wireless Symposium, 2008 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-1462-8
Electronic_ISBN :
978-1-4244-1463-5
Type :
conf
DOI :
10.1109/RWS.2008.4463512
Filename :
4463512
Link To Document :
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