Phase noise characteristics associated with low-frequency noise in submicron SOI MOSFET feedback oscillator for RF IC's

Phase noise in silicon-on-insulator (SOI) MOSFET feedback oscillators for R F IC applications is investigated, The observed correlation between the osc illator's high frequency phase noise and the transistor's low-frequency noi se characteristics demonstrates that the phase noise overshoot still exists in partially-depleted (PD) floating body SOI nMOS Colpitts oscillators. Th ese results suggest that kink-induced effects associated with low-frequency components of the signal are upconverted into the ideally kink-free high f requency domain operation mode of Po Boating body SOI oscillators.