Title :
A 6-GHz low-phase-noise voltage-controlled oscillator
Author :
Pan, Yaohua ; Chen, Hu ; Shao, Ke ; Huang, Yumei ; Hong, Zhiliang
Author_Institution :
State Key Lab. of ASIC & Syst., Fudan Univ., Shanghai, China
Abstract :
A 6-GHz low-phase-noise voltage-controlled oscillator (VCO) is proposed. A varactor based coarse tuning method which differs from the traditional switch-capacitor based architecture is adopted. The source feedback resistors and a modified filtering technique are used to suppress low and high frequency noises of current source, respectively. To verify the concept, a prototype VCO is fabricated in 0.13μm CMOS technology. The measurement results show that the VCO has a phase noise of -119dBc/Hz at 1MHz offset and a tuning range of 6.1GHz to 6.7GHz. The VCO core draws only 4.7mA current from 1.2V supply voltage.
Keywords :
CMOS analogue integrated circuits; circuit tuning; field effect MMIC; microwave oscillators; phase noise; varactors; voltage-controlled oscillators; CMOS technology; VCO core; coarse tuning; current 4.7 mA; frequency 6 GHz; frequency noise suppression; low phase noise; modified filtering; size 0.13 mum; source feedback resistors; varactor; voltage 1.2 V; voltage controlled oscillator; CMOS integrated circuits; Phase noise; Tuning; Varactors; Voltage-controlled oscillators;
Conference_Titel :
Solid-State and Integrated Circuit Technology (ICSICT), 2010 10th IEEE International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-5797-7
DOI :
10.1109/ICSICT.2010.5667781
