Title :
A Low-Power 2/5.8-GHz CMOS LC-VCO for Multi-band Wireless Communication Applications
Author :
Yeh, Mei-Ling ; Liou, Wan-Rone ; Chen, T.H. ; Lin, Y.C. ; Ho, Jyh-Jier
Author_Institution :
Dept. of Electron. Eng., St. John´´s Univ., Tamsui
Abstract :
A fully integrated dual-band LC voltage control oscillator designed in a 0.18-mum CMOS technology for 5.8-GHz/2.0-GHz wireless communication applications is described. The frequency band switching is accomplished with switched-inductor technique. The dual-band oscillator can be operated in 5.38~6.23 GHz and 1.78~2.07 GHz with 15% frequency tuning range. Two different inductors are used for the frequency band switching. Frequency tuning is implemented by varying the capacitance of a MOS varactor. The measured phase noise is -109 dBc/Hz @1 MHz and -112 dBc/Hz @1 MHz for frequency at 5.8 GHz and 2 GHz, respectively. This oscillator is fabricated in UMC´s 0.18-mum one-poly-six-metal 1.8 V process. The power dissipation of this dual-band VCO is 11.7 and 9.3 mW for oscillation frequency of 2 GHz and 5.8 GHz, respectively
Keywords :
CMOS integrated circuits; radiocommunication; varactors; voltage-controlled oscillators; 0.18 micron; 1 MHz; 1.8 V; 11.7 mW; 2 GHz; 5.8 GHz; 9.3 mW; CMOS technology; MOS varactor; dual-band LC VCO; frequency band switching; frequency tuning; multiband wireless communication application; switched-inductor technique; voltage control oscillator; CMOS technology; Capacitance; Communication switching; Dual band; Frequency; Inductors; Tuning; Voltage control; Voltage-controlled oscillators; Wireless communication;
Conference_Titel :
Communications, Circuits and Systems Proceedings, 2006 International Conference on
Conference_Location :
Guilin
Print_ISBN :
0-7803-9584-0
Electronic_ISBN :
0-7803-9585-9
DOI :
10.1109/ICCCAS.2006.284779
