Title :
A comparative study of CMOS-based quadrature integrated LC VCO topologies
Author :
Hegazy, H. ; Sharaf, K. ; Ragai, H.F.
Author_Institution :
Mentor Graphics Corp., Cairo, Egypt
Abstract :
Topologies comparison of a 1 GHz quadrature voltage controlled oscillator, VCO, based on simulation results is presented. VCO circuits are simulated using 0.25 micron CMOS process from 2.5 V supply. The comparison is introduced from two different perspectives: constant VCO DC power and constant output swing. The main differences between different topologies seeking same targeted VCO specifications are shown.
Keywords :
CMOS analogue integrated circuits; UHF integrated circuits; UHF oscillators; integrated circuit design; voltage-controlled oscillators; 0.25 micron; 1 GHz; 2.5 V; CMOS-based quadrature integrated topology; DC power; LC VCO topologies; VCO; constant output swing; CMOS technology; Circuit simulation; Circuit topology; FETs; Frequency conversion; Inductors; Phase noise; Radio frequency; Voltage; Voltage-controlled oscillators;
Conference_Titel :
Circuits and Systems, 2002. MWSCAS-2002. The 2002 45th Midwest Symposium on
Print_ISBN :
0-7803-7523-8
DOI :
10.1109/MWSCAS.2002.1187225
