Title :
Low power octa-phase LC VCO for direct conversion 5 GHz WLAN receiver
Author :
Kim, Ji-Hoon ; Yoo, Hyung-Joun
Author_Institution :
Sch. of Eng., Inf. & Commun. Univ., Daejeon, South Korea
Abstract :
This paper presents a simple and low power octa-phase VCO for a direct conversion 5 GHz WLAN receiver. Octa-phased outputs are generated simply by coupling four identical differential LC VCOs. The VCO is good for low power and wideband applications, because it is without lossy and narrow-banded phase shift network. Designed in 0.18 μm CMOS technology, the VCO achieves tuning range from 2.28 to 2.79 GHz, and simulated phase noise is better than -110 dBc/Hz at most of tuning frequency.
Keywords :
CMOS integrated circuits; integrated circuit design; low-power electronics; microwave oscillators; phase noise; radio receivers; voltage-controlled oscillators; wireless LAN; 0.18 micron; 2.28 to 2.79 GHz; 25 GHz; CMOS technology; differential VCO; direct conversion WLAN receiver; octa-phase LC VCO; phase noise; phase shift network; voltage controlled oscillator; CMOS technology; Frequency; Phase noise; RF signals; Signal generators; Tuning; Virtual colonoscopy; Voltage-controlled oscillators; Wideband; Wireless LAN;
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1607088
