This paper discusses the phase noise with reference to Leeson’s oscillator model, describes the noise generating mechanisms comprising of flicker FM noise, thermally induced and broadband noise and provides the designer with simplified key parameters that should be designed properly to achieve good phase noise performance. Design of customized VCO (Voltage Controlled Oscillator) running in the range of 1.5 GHz to 2.3 GHz with tuning sensitivity of 100 MHz/volts is presented which successfully proves the theoretical considerations developed. |