Title :
A 40-GHz Wide-Tuning-Range VCO in 0.18-~m CMOS
Author :
Chien, Jun-Chau ; Lu, Liang-Hung
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei
Abstract :
A 40-GHz wideband VCO is demonstrated in a standard 0.18-mum CMOS technology. In order to achieve wide tuning range at millimeter-wave frequencies, a non-uniform standing-wave VCO with a switched-transmission line architecture is proposed. By switching the length of the transmission line, a frequency tuning range of 7.5 GHz is achieved for the 40-GHz VCO design while maintaining a phase noise better than -96 dBc/Hz at 1-MHz offset
Keywords :
CMOS integrated circuits; circuit tuning; millimetre wave integrated circuits; millimetre wave oscillators; phase noise; transmission lines; voltage-controlled oscillators; 0.18 micron; 40 GHz; 7.5 GHz; CMOS technology; millimeter wave frequencies; nonuniform standing wave; phase noise; switched transmission line; wideband VCO; CMOS process; CMOS technology; Circuit optimization; Distributed parameter circuits; Frequency; Millimeter wave technology; Transmission lines; Tuning; Varactors; Voltage-controlled oscillators;
Conference_Titel :
VLSI Circuits, 2006. Digest of Technical Papers. 2006 Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
1-4244-0006-6
DOI :
10.1109/VLSIC.2006.1705368
