题目/Title：A 2-GHz Low Power Differentially Tuned CMOS Monolithic LC-VCO

作者/Author：
                        Li Zhang,Baoyong Chi,JinKeYao,Zhihua Wang,Hongyi Chen

会议/Conference：ISCE 2006

地点/Location：St.Petersburg, Russia

年份/Issue Date：2006.28 June-1 July

页码/pages：pp. 1 - 4

摘要/Abstract：
A 2 GHz differentially tuned CMOS monolithic LC-VCO was designed and fabricated in 0.18-mum CMOS process. The VCO has a 16.15% tuning range (from 1.8998 GHz to 2.2335 GHz) due to a combination of analog and digital tuning technique (4-bit binary switch-capacitor array). The measured phase noise is -118.17 dBc/Hz at 1 MHz offset from 2.158 GHz carrier. With the presented smart switch, the phase noise varies no more than 3 dB at different digital control bits. The phase noise changes only about 2 dB in the tuning range due to the pn-junctions as the varactors. The VCO draws about 2.1 mA current from the 1.8 V power supply and could work in 1.5 V power supply