Shu-Jen Han, Alberto Valdes Garcia, et al.
IEDM 2013
A 4-GHz fully-monolithic nMOS voltage-controlled oscillator circuit implemented in a 0.5-μm BiCMOS technology is presented. The tuning range is 9% with an on-chip varactortuned resonator and a control voltage of 0-3 V. The measured phase noise is -85 dBc/Hz at 100 kHz and -106 dBc/Hz at 1 MHz offset. The circuit draws 8 mA from a 3 V supply including the reference branch bias current. Even with the supply voltage and the variation in control voltage reduced to 2.3 V, the VCO has a tuning range of 8%.
Shu-Jen Han, Alberto Valdes Garcia, et al.
IEDM 2013
Joachim N. Burghartz, Andrew C. Megdanis, et al.
IEEE Electron Device Letters
Keith A. Jenkins, Lionel Li
VTS 2009
Jente B. Kuang, Keith A. Jenkins, et al.
ESSCIRC 2013