%0 Conference Paper %B ESSCIRC 2017 - 43rd IEEE European Solid State Circuits Conference %D 2017 %T A 21GHz 20.5%-tuning range Colpitts VCO with -119 dBc/Hz phase noise at 1MHz offset %A F. Boscolo %A Padovan, F. %A F. Quadrelli %A Tiebout, M. %A Neviani, A. %A Bevilacqua, A. %K BiCMOS integrated circuits %K bipolar MMIC %K current 17.5 mA %K frequency 1 MHz %K frequency 18.8 GHz to 23.1 GHz %K Ge-Si alloys %K microwave oscillators %K oscillator figure-of-merit %K phase noise %K SiGe %K SiGe BiCMOS Colpitts VCO %K Silicon germanium %K transformer-coupled varactor %K Tuning %K Varactors %K very low phase noise %K voltage 4 V %K voltage controlled oscillator %K voltage-controlled oscillators %B ESSCIRC 2017 - 43rd IEEE European Solid State Circuits Conference %P 91-94 %8 Sept %R 10.1109/ESSCIRC.2017.8094533