Title :
Wide band voltage-controlled oscillator for multi-band multi-mode GNSS receivers
Author :
Lu, Chao ; Jin, Jing ; Mao, Cui ; Chen, Dongpo
Author_Institution :
Center for Analog/RF Integrated Circuits (CARFIC), Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
A fully integrated wide band voltage-controlled oscillator (VCO) for multi-band multi-mode GNSS receivers is proposed and designed in 0.18μm CMOS topology with a 1.8V supply voltage. Dual core technique is used to achieve wide frequency tuning range and to reduce the power consumption. Complementary cross-coupled topology is chosen for lower 1/f corner and less power dispassion. The proposed dual-core VCO can oscillate from 2.15GHz to 3.78GHz, with a KVCO varied from 51MHz/V to 124MHz/V. It achieves a phase noise of -99.5dBc/Hz and -121.6dBc/Hz at 100KHz and 1MHz frequency offsets from 2.4GHz, and -96.6dBc/Hz and 119.7dBc/Hz at 100KHz and 1MHz frequency offsets from 3.2GHz, respectively. The low frequency VCO core consumes 2.60mA from a 1.8V supply, while the high frequency VCO core consumes 2.94mA.
Keywords :
CMOS integrated circuits; microwave receivers; satellite navigation; switched capacitor networks; voltage-controlled oscillators; CMOS topology; cross-coupled topology; current 2.6 mA; current 2.94 mA; dual core technique; frequency 1 MHz; frequency 100 kHz; frequency 2.15 GHz to 3.78 GHz; multiband multimode GNSS receivers; size 0.18 mum; voltage 1.8 V; wide band voltage-controlled oscillator; wide frequency tuning range; Inductors; Phase noise; Power demand; Q factor; Topology; Tuning; Voltage-controlled oscillators; GNSS; VCO; low power; phase noise; switched capacitor array (SCA); wide band;
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.2010.5667406
