Title :
A comparative study of CMOS LC VCO topologies for wide-band multi-standard transceivers
Author :
Fard, Ali ; Johnson, Tord ; Linder, Martin ; Åberg, Denny
Author_Institution :
Dept. of Electron., Malardalen Univ., Vasteras, Sweden
Abstract :
In this paper a comparison between two widely used VCO topologies, in standard 0.35 μm CMOS technology is presented. The VCOs, based on an NMOS and a complementary structure, are designed to operate in a wide band frequency range suited for future multi-standard WLAN radios. The comparisons are carried out from the perspectives of tuning range, power dissipation and phase noise. The results, which are based on simulations, show that both circuits are applicable for the targeted operation band of 4.5-6.5 GHz, while the complementary VCO shows less power consumption and lower phase noise levels.
Keywords :
CMOS integrated circuits; integrated circuit design; low-power electronics; network topology; phase noise; transceivers; voltage-controlled oscillators; 4.5 to 6.5 GHz; CMOS LC VCO topology; CMOS technology; NMOS structure; complementary VCO; complementary structure; phase noise; power consumption; power dissipation; wideband multistandard transceivers; CMOS technology; Circuit optimization; Frequency; MOS devices; Phase noise; Topology; Transceivers; Voltage-controlled oscillators; Wideband; Wireless LAN;
Conference_Titel :
Circuits and Systems, 2004. MWSCAS '04. The 2004 47th Midwest Symposium on
Print_ISBN :
0-7803-8346-X
DOI :
10.1109/MWSCAS.2004.1354280
