A.  Franceschin, Andreani, P., Padovan, F., Bassi, M., Nonis, R., and Bevilacqua, A., ?A 19.5 GHz 28 nm CMOS Class-C VCO with Reduced 1/f Noise Upconversion?, in ESSCIRC 2019 - IEEE 45th European Solid State Circuits Conference (ESSCIRC), 2019.